E46 runs rough The engine of the The car features poor performance, rough idle (800 RPM), stalling, poor fuel economy, and occasional strange burning smell that I can't locate since I only notice it for a My 1999 e46 now has 220K km. ghostxyaguru Discussion starter. I parked for the day and tried driving again after when check engine came on. S. Random misfire all cylinders. I woke up one morning and started the car. Hi there, new here, I have a E46 330d, 204bhp engine. itcanbdunn Discussion starter. Rough running needs to be explained in more detail, when and under what conditions as well as providing data to help understand what is going on. B. Jump to Latest 269 views 3 replies 2 participants last post by westrumjr Jun 30, 2024. I can't figure out what's going on. Correction: In case of customer complaint, reprogram the DME using CD 20. I usually let it idle like 5 mins then The following article gives detailed instructions on performing a rough idle repair on a BMW E46 3 series car. At this point I don't Bmw e46 rough idle. Then I looked into the "rough" display and noticed that cylinder 6 was running way rough. Camshaft & Crankshaft codes/rough running issues. Just how severe it is varies and it sometimes runs ALMOST completely fine, though never absolutely fine. It ran so poorly I did not even test drive it. About 2 months ago a smoke test was done on the car because the check engine light was on and a local shop said I needed to clean or replace the MAF sensor, they said the car had no leaks after running the test. If I'm driving and don't let the revs drop below 1k everything's fine and the car runs well. I think a top end a top end de-gunk sounds like a good idea, especially given the state of the plugs! Do you think Redx would do . Everything seemed to have gone smoothly, however when I started the thing it now runs super rough, and even stranger there is not a single code that seems to point at what could be causing the issue. I've replaced and checked many parts including maf, boots, valve cover gasket etc. It's enough to fill my entire street. 0 programming or higher. Content on E46 Fanatics Forum is generated by its users. I have also seen a friend's rally car occasionally drop a cylinder at revs, only when turning left - turned out to be the hose from the intake boot to the ICV and manifold that caused that issue - again, something E46. I then checked the forums and after seeing suggestions to check for fuel smell, etc, I decided to try start it again and it started, but As of now I am waiting for the DISA o ring to arrive, since I still have a rough idle (a little improved). At this point I don't BTW, I've filled up from an almost empty tank several times (not that I was trying to prove anything), and have never experienced rough idle/stalling, etc. I replaced the VCG, VANOS seals, OFHG Today's Posts; Member List; Calendar; Forum; Vehicle Discussion; E46 (2001 - 2006) If this is your first visit, be sure to check out the FAQ by clicking the link above. RPM The problem I am having is the car starts up and runs just fine until it has reached full operating temperature (half-way between blue and red on temperature gauge). About 2 weeks ago, car suddenly started running rough and I heard a loud ticking noise, suspected DISA valve pin issue. ). , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Intermittent very rough running and loss of power. Read the codes when I got home and it said system lean bank 1&2, and misfire I have reviewed most of the rough idling post and can't find one that points to my situation. Stealership told me last year that my fuel pump tested bad, at one bar of pressure. I did all new spark plugs and Bosch ignition coils When the misfire / rough idle occur, the car shakes, sounds awful and sometimes sputters and dies. Our professionals are here to help make sure you find the answers you need to your questions and Rough running at cold start is usually a vacuum leak. Ice_E46 Discussion starter. Check for errors, Intermittent very rough running and loss of power. Anyone else have an issue like this? Could it be the m50 intake mod I did? Ten common reasons your E46’s M54 engine is running rough, misfiring and/or smoking💨 Engine feels rough when accelerating. What I've done so far: help- running rough/idle issues . H. Car started running really rough and losing power while driving up a hill. To start viewing messages, select the forum that you want to visit from the selection below. So far, I’ve replaced the MAF sensor, the crankshaft position sensor, Your fix is documented in the Bentley Service Manual. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada I have been experiencing rough cold start idle for a while now. I know rough idle is a generic term on e46’s as I’ve done a lot of work myself on these engines and faced many issues but this one is annoying me quite a bit. lpgnoel666 Discussion starter 2 posts · Joined 2024 Add to quote; Only show this user #1 · Jun 28, 2024. 2 posts · Joined 2023 Add to quote; Only show this user #1 · Mar 17, 2023. Cleared the codes Not worried about the misfiring and rough idle right now, since it's running fine without the MAF sensor. Jump to Latest 172 views 3 replies 3 participants last post by Sapote Oct 24, 2024. C. So far, I’ve replaced the MAF sensor, the crankshaft position sensor, A vanos rattle (needle bearing has plays) should not cause rough idling, but it causes the oscillation noise whenever the vanos varies the cam timing. Jump to Latest 519 views Engine has been stalling and running rough, I replaced the MAF and DISA within the last week and the car has had no issues the last few days. Yesterday I finally got my own OBD cable and checked the codes, nothing new. I shut it off and tried again later that day. Hey new to all this and wondering if anyone can help me, was driving down the road last night and all of a sudden noticed a crazy amount low fuel pressure, running rough. 1 litre per kilometer. I Hey I have a issue that doesn***8217;t sound common to what most people post about acceleration issues. And I just noticed that the coolant is disappearing fast!!! And Hello, my e46 is sometimes stalling and rough idleing and then stall, or when going from stop to accelerating car will stall. I've also noticed that it wont happen after the idle can make it past the point where the idle settles (starts at round 1k and then drops to . Jump to Latest 1K views 3 replies 3 participants last post by Bali Mar 17, 2023. Hello everyone, lately I've been having a problem with my 1999 318i. What he have done so far: Replaced camshaft position sensors Replaced VVT motor Replaced Eccentric shaft sensor (non OEM) Replaced VVT controller Replaced As many other before I'm fighting for a year now against the infamous rough running when engine is cold. When I purchased the car, it was in The engine was very rough at idle (misfiring & running lean), acceleration was at time sluggish, and I would get massive plumes of white smoke when starting the car or accelerating. But I have found a - There is definitely a suck on the oil filler cap. The only issue is as follows: When I sit in idle for approx 10 - 30 mins I begin to get slight vibrations in the car that turn into full on shaking and what feels like misfires. I am now feeling the engine in pedal a little more when I accelerate. M. 0 coins. At first I thought it was my plugs, so I changed them and found them covered in oil. Still getting misfire on CYL4 ! the car runs normal when i erase code P0304 but then it comes back quite often. e46 325ci idles pretty rough but drives well, when coming to a stop the revs drop to idle but bounces up and down from idle to 1k rpm (makes car shudder foward with each bounce in rpm) and goes back to normal/rough idle when coming to a complete stop Locked post. That is, the engine is running rough, so you disconnect the MAF. J. Today I was on my My 330i has 110k miles and has had a rough idle for a month or two. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada I don’t think it’s the VANOS because I don’t notice any other issues aside from rough idle with AC. 3K views 14 replies 6 participants last post by 2001Silver330CI Mar 20, 2018. After cold start when the engine runs at 1000rpms during the secondary air system pump operation for about 20-30s it drops the rpms to 700-750rpm and shakes a bit So I haven't driven my e46 330 all winter (although unfortunately my new garage isn't finished yet so it had to sit outside) and just fired it up and to my dispair it wasn't running as smoothly as it did last time. So plan on building a smoke tester of you thing you will use if more My 2000 328ci feels as if a couple of cylinders arent working because idle is very rough, lack of power and after a couple seconds of rough idling the car will immediately shut off unless I rev the engine. My 325i cranks right up and if I accelerate very soft it tries to run fine. Jakl Discussion starter. Jsmk23 Discussion starter 32 posts · Joined 2011 Add to quote; Only show this user #1 · Aug 15, 2013. Sound terrible. As the temps drop dramatically the cold start fuel enrichment is even more important for a smooth running engine. Oddly enough, if I tap the gas a little at a stop it runs fine, but I still feel a loss of power when moving. So my question to you guys is how long can i go on like this until this turns into a problem (just out tof curiosity, i'm in the process of ordering a MAF). I used the fully refurbished vanos unit from my other 325ci and put it on this car as My e46 320ci with the m54 engine has had this problem awhile where the idle is kinda bouncing and if i rev the engine it will stall when "coming" Coins. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada I recently bought a 2001 316i and have since found that it intermittently runs rough on idle (no problems at higher revs). You may have to register before you can post: click the register link above to proceed. i have Once cracks and leaks form, then you have vacuum leaks that cause the cold start fuel enrichment to become Lean and the engine will run rough and misfire for the first few minutes, then as later in the day the engine - Engine runs rough during the first few minutes of engine operation following initial cold start. With a hot engine at idle, read and record the 4 fuel trims, 2 short term and 2 long term. pre-cat O2 sensor, rough running. Cleared the codes E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. The problem starts once the engine reaches full operating temperature--about 15-20 minutes of driving time. the idle is extremely rough and often the revs die then pick back up then die and pick back up before Hi my E46 engine management light came on today and the car seemed rough at idle. And I just noticed that the coolant is disappearing fast!!! And Rough Idle, not running on all cylinders. Do you think it's the DISA valve or the idle Rough. Jump to Latest 15K views 24 replies 7 participants last post by itcanbdunn Dec 13, 2011. UNLESS I start up the car and run it up to about 2500 RPM and let go of the gas, then it stabilizes almost immediatly And also the car drinks about 1. Once moving and over 1000rpm, it seemed to be fine and smooth again. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Yesterday I changed my oil and overfilled it by about 1 quart. The Rough running numbers followed the coil. It's giving no codes I have replaced the Fourth crank. 7K views 15 replies 9 participants last post by ralf Feb 18, 2022. Ordered the scanner to get the code but must wait for it to come Vehicle runs rough, but only intermittently. Also the knocking sound which is quite loud is still there only when the car runs rough. It comes and goes. 88 posts · Joined 2013 Add to quote; Only show this user #1 · Dec 23, 2013. 32 posts · Joined 2010 Add to quote; Only show this user #1 · May 13, 2010 (Edited) Rough idle Hi I have an n42 motor that is very erratic idle at cold for the first 20 seconds and then smother After about 3 minutes of running the engine, if I turn it off and then on again, it will run and idle very smoothly and problem free. Once you have that, post back your Hey guys, as the title states, Street about a minute or so of idle, my car starts to run really rough. When you put ur foot down it does blow a bit of black smoke. You're going to need a scanner with live data. E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. L. They did and no more rough idle. Car starts running rough after idle. 1 - 8 of 8 Posts. Fixed this problem but the rough idle isn´t totally gone. I always get this issue when the car sits for a week. I was driving back home from the shops the other week and car was running pretty rough and losing power. Jump to Latest 1. N. It didn't act like it was going to die, but the RPMs were all over the place. Driving the car at normal speed seemed fine, it had power and was not 'rough' while on the highway. Runs rough Jump to Latest Follow 252 views 1 reply 2 participants last post by NZ00Z3 Jan 10, 2022 BUT, idle is for crap, very occasional popback through the intake manifold. Valheim Genshin Impact Minecraft Pokimane Halo Infinite Call of Duty: Warzone Path of Exile Hollow Knight: Silksong Escape from Tarkov Watch Dogs: Legion. It starts instantly from cold, and will idle perfectly smooth, also starts instantly when hot. Jump to Latest 6K views 3 replies 3 participants last post by Stili Sep 28, 2021. Since then, i've changed my coils, spark plugs, air intake boot, fuel pump, crankcase vent system, checked DISA, but the problem still occurs. Fuel mileage is Dear all. Sort by Oldest first Oldest first Newest first Most pre-cat O2 sensor, rough running. I have a 99 323i that has started giving me problems. There are very good reasons to run the engine rich during a cold start even if you didn't have catalysts. Hi there, I have a 2004 E46 with an N46B20A engine and an automatic transmission. If I clear the codes it will be fine temporarily before an EML light appears and rough idle, stalls. No codes pending or active. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada 2004 E46 320d Intermittently running rough and cutting out. My car has developed an intermittent fault whereby it will be running OK from cold and then once its warmed up for So you will run like shit unless you happen to be at the right temperature, altitude, speed, to make the engine happy. the running off the car feels very rough when idling even with no ancileries running? Thanks in advance . I've noticed it has a small miss to it when I first start it up. It is idling between 700-750 rpm (hunting) BMW E46 Misfire Rough Idle Every Possibility For M54 M52tu Engines E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. Anything > 8% on multiplicative adaptation indicates an air leak. rough running Jump to Latest 5. Lug_n_trug Discussion starter. Car runs great, so you go and buy a new MAF. 37 posts · Joined 2006 Add to quote; Only show this user #1 · Feb 5, 2007. 62 posts · Joined 2010 Add to quote; Only show this user #1 · Dec 9, 2011. ChazHS Discussion starter. The engine control runs in open loop control, the O2 sensors are not used and the fuel trims are not updated or used. The car is running MUCH better now with a very stable idle, I hope it keeps up. Elm light stays. I've checked all vacume pipes, cleaned maf, cleaned egr, check boost pipes, changed oil and oil filter, changed air filter. It starts and runs rough and smells rich. I have replaced intake boots and maf as As for the Power Brake Booster, these do leak vacuum and can cause the engine to run slightly rough and may cause the engine RPM to drop if they are leaking vacuum when the brake are applied. OBDII showed neg STFT short term fuel trims B2 but no clear indication of problem. Also elm light is on. dohboyyyy Discussion starter. Also I I've been having rough idle issues & bad gas mileage for the last few months and whenever I unplug the mass air flow sensor the idle becomes smooth again. I've changed fuel First off I want to say that the car does not run rough as nails with the MAF plugged in however I notice an occasional and subtle shake at idle that is more noticeable on very cold starts, and the exhaust smells quite rich(I do have a decat, but even so the smell is quite strong) I have no codes and i can't see the rpm moving around i can just feel it. 2 etc are known as sub-tests. Shut off engine and restart, runs fine. This problem happens when you come to a stop and rpm's drop. Add to quote; Share Only show this user 2000 323i running rough. I have also conducted a DIY smoke test (several DIS gave me two variable intake manifold faults. I Bought the car two weeks ago, at the time it was running terribly with rough idle and misfires. Jump to Latest 13K views 13 replies 5 participants last post by jfoj Jan 17, 2018. Problems starting / running rough. If any are >8% then you likely Rough idle/lean code after VCG? Jump to Latest 895 views 6 replies 3 participants last post by Sapote Feb 22, 2021. Yesterday it drove to work just fine, but when heading home I noticed it idling rough and a bit shaky. So I replaced it, and to my surprise it fixed. Jump to Latest 44K views 23 replies 5 participants last post by eforty6 May 23, 2010. Start up cold, runs rough. 6 posts · Joined 2022 Add to quote; Only show this user #1 · Feb 13, 2022. I am starting to think it is either the camshaft position sensors or E46 running rough. These fueling tables are richer than normal. Note that I was starting the car letting run for a few minutes then shutting it off and restarting, because I knew the problem didn’t always happen. glacierXI Discussion starter. Sort of. when is in the state, there's significant loss of acceleration power. Generally it runs great and I've gone on 2 hour+ drives that are lovely. Have you tried the Sea Foam in the crankcase Still, runs rough unless I increase rpm to around 2500 and dies if I let up on accelerator. I replaced the VCG, VANOS seals, OFHG Rough idle and poor mileage issues Chronically cool running engines typically run rich which can cause additional carbon build up and lack of carbon burn off. 420 posts · Joined 2018 Add to quote; Only show this user #1 · Feb 21, 2021. Probably a hidden vacuum leak that I can't find at the moment. Firstly the problem is that when driving and coming to a stop, engine wont go to 800-900 RPM right away. Additional carbon build up in the intake ports, on the back of So you will run like shit unless you happen to be at the right temperature, altitude, speed, to make the engine happy. Changed coil number 4 (near firewall) with the spare 2nd hand coil I had and car was running smooth and normal again. When inspecting crank breather I noticed it doesn't E46 rough idle, no power. It runs fine for the rest of the day, no idle I've pulled the cap to do the "suction test" when the engine is running and it passed and didn't cause a rough idle issue or any idle change. 0. I have some problems with, and I decided to rebuild slowly. I recently did spark plugs and coils. Car ended up idling smoothly and running perfect. Jump to Latest 10K views 18 replies 9 participants last post by BiH55 Nov 7, 2020. Tests 3-21 are locked but Test 19 is the unlock function for accessing the 2001 E46 M3 Rough Idle / Shaking. Sounds like the noise is coming from the drivers (RHS) part of the engine although this guesstimate made while driving not while looking under runs rough after vanos actuator. 3K views 4 replies 2 participants last post by jfoj Mar 9, 2015. The needle dosn't fluctuate up and down as such, just sits at around 600rpm constantly. The next day The issue is that my car usually has a rough idle, but the biggest problem is that sometimes, while idling, my car randomly switches from 6 cylinders to 5 or 4! My problem started when someone changed my valve cover gasket. Rough Idle, No Codes (Logs provided) Tags logs rough idle vacuum. Sounds like the noise is coming from the drivers (RHS) part of the engine although this guesstimate made while driving not while looking under The next time I started the engine it ran a bit more rough and continued to run rough even after getting fully warmed up. Jump to Latest Follow Submissions are now being taken for the SEPTEMBER E46 OF THE MONTH challenge. Drives pretty good, but is still hesitating, bogging and idling all over the place. 5K views 3 replies 3 participants last post by elteegilbreath Apr 16, 2014. The next day Now 6 months later, I am experiencing intermittent rough running with the "service eng soon" "eml" lights on. Could be the throttle body or 2002 E46 318i N42 Rough idle. E46 325i A/T has around 60K miles on the odo. The rich mixture has a tendency to mask small vacuum leaks. Most people have a problem starting or a rough idle. com is a good BMW parts source. It only happens while the engine is in open loop control. Most times the car starts and runs fine, but sometimes it has the same problems at a lesser extent. They said it was the "hooter valve and hoses" that needed to be replaced. The irony is, I try to keep the tank full to reduce the amount of moisture that works its way into the tank over the winter. I already replaced the O2 sensors, I'll have to scan the codes again but I am getting I have owned my 2002 318i with 75k on the clock for a few months now with no problems, but a few days ago i was driving along and with no warning the engine started to run rough and lost a lot of power. Tags 2004 318i inpa pcodes. Car is in excellent condition and runs very well. Hi all, I have been following day's on here to do a full preventative main thence attack to my 2002 330ci with 175k. I unplugged my MAF and everything works MUCH better. If I remove the cap the car runs rough. It may idle rough and About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright At first I noticed the engine was rough at idle, than lost power when take off from a stop light. Jump to Latest 725 views 9 replies 7 participants last post by Sapote May 28, 2024. Next morning I went to the LKQ, bought 6 used coils, swapped it out. That is a good clue if the right side is running out or not. On immediate start up the idle is fine then after a few seconds as the sensors adjust mixtures the car starts to rough idle for about 20-30 seconds before it smooths out. 1649 posts · Joined 2013 Add to quote; Only show this user #1 · Mar 6, 2018 (Edited) My car is running rough and happens when I'm trying to get on the highway. I've been searching the forum for info but wasn't able to find any info on this problem. Press on gas and no/little engine response until throttle In this video I go through the step by step process of diagnosing and fixing performance issues on a BMW E46 323i 3 series 6 cylinder. And when the car does run it runs real rough and smells like fuel it's running rich. E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG VerticalScope Inc. It idles rough and continues to run rough throughout the rev range, smoothing as it revs higher, but still Then yesterday, I got in the car and started it, and for about ~20 seconds, it idled really rough. I have situation with a 04 E46 318i. Once it has reached operating temp it starts running rough (while driving or idle). Check engine. And as of last weekend it erraticly sputters when gas is given. so I replaced it and the fuse that was blowed under the hood (30 amp) by the ecu. Lean bank 1 and sometimes 2, and E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. Had the same problem with a e46 I had that ran rough when cold but when away when it warmed up. I have a 99 323i. Made it home with relief. When this happened for the first few times, it wasn't so rough and it didn't turn the CEL on but then on one morning the problem escalated and the CEL came on so I drove to a local dealer who ran OBD diagnoses which showed a misfiring I have an old lady as winter car, 1999 320i touring. Have you done a cold start log to see the Cracked valve covers are pretty common on the E46 as it ages. Other uses: 2. The valve stem seals were replaced, and the head was removed to change the During the time its roughly idling, I will press on the gas and the RPM dont increase whatsoever, almost as if there is no gas getting to the car. There were no problems before this incident. Check for errors, Open menu Open navigation Go to Reddit Home. Start it up and it will misfire like a vacuum leak. Excuse my lack of parts knowledge, but on the driver side of the engine there is what appears to be a valve attached I have still issues with my M54B30 engine that’s running a bit rough at idle, almost like a slight RPM surge. The car was running fine despite the code. Stili Discussion starter. Have you tried putting the Sea Foam into a an intake vent when the car was running? To alleviate what specific problem and what were the results? 3. Lawless000 Discussion starter. CiTiBoy New member. I deleted the old ones turned on the engine for a while and checked E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. As soon as I stopped at a traffic light, the rough idle came back. 5k). Bought the car recently as a project car for my son and I. Disconnecting MAF altogether changes how the engine runs but doesn't help to stalling at all. When I disconnect the VVT motor and start, the car idles pretty much normally but goes into limp mode (3000 rpm limit, slow throttle response). Have you tried the Sea Foam in the crankcase Hi all, so these past few days I've been working on installing the m56 sulev valve cover on my 2001 325ci. During the time its roughly idling, I will press on the gas and the RPM dont increase whatsoever, almost as if there is no gas getting to the car. But I don't drive for long As for the Power Brake Booster, these do leak vacuum and can cause the engine to run slightly rough and may cause the engine RPM to drop if they are leaking vacuum when the brake are applied. I cleaned the intake manifold and replaced the intake manifold adjuster. 12 posts · Joined 2023 Add to quote; Only show this user #1 · Aug 16, 2024. At a light, while it is sputtering, if I reeve the engine, it hey guys yesterday i check my oil and realized it was a little low so i topped it off. But the same happend. starts up like nothing ever happened and running smooth. Hello all, I've posted on this forum a couple of times before, and have actually posted about this issue before! Hello My car is a 2003 BMW 318i Auto with N42B20 motor. Since it's on both banks I have reviewed most of the rough idling post and can't find one that points to my situation. I still need to re-pull the codes after clearing them, but after my VCG change and Vanos rebuild, I am having a slightly rough idle and a lean code After a minute of running it starts running rough and lumpy at idle. Stinkiimeat Discussion starter. Nick8375 Discussion starter 2 posts · Joined 2024 Add to quote; Only show this user #1 · May 26, 2024 (Edited by Moderator) Hello everyone, Just purchased a 2002 325 XI about 3 weeks back now 170,000 miles. The idle was rough going up and down so I read the diagnostic codes which said misfire cylinder 3, 4, 5 and also Fuel Control mixture. Help with rough idle. I cleared all the codes and none of them came back up but the car is still Repairing the rough idle in your BMW E46 3 series car requires replacing both the DISA and idle control valves and replacing them with new ones. Note that the Scotty Smoke Test method is not so good for smaller air/vacuum leaks or fully filling the engine crankcase, for this you really need a smoke machine that can provide a solid and continuous low pressure smoke stream. It's only cylinder 5 I'm having misfires on. 17 posts · Joined 2014 Add to quote; Only show this user #1 · Jun 5, 2014. Emergency. I am now getting codes for ICV mechanical fault, plausibility of accelerator and brake pedals, and signal from MAF sensor. E46 318i 2002 - Running Rough. Tests 1. So it will stumble hot and cold. E46 are notorious for all these failures if you run through the whole list and it’s still making problems its time for a s85 swap. My 2001 330i experiences rough idling when I stop and occasionally hesitates and sputters while driving. it isa 01 325i. RayPooley. I diagnosed the car with an OBD scanner and it said it was a bad mass air flow sensor so i changed it with another one i had laying around that i know works. Fit the new Idle Speed E46 N42 Engine? Idle feels rough Does anyone no if you can increase the idle speed of the N42 engine as mine is only idling at 700 RPM and im told it should be 800 RPM. Switched the check valve around and it still runs rough and dies. But normal acceleration causes it to sputter as if not enough gas is going through. Premium Powerups Explore Gaming. It will run fine when cold then after a few minutes will jump from 5k rpm to 8k rpm during idlessometimes it turns off. it's a rust bucket with no real mods. This vehicle had a bad / rough idle and was very under Clearly it's running on only 5 cylinders. Yet your engine is fine after it has warmed up. Any vacuum leaks or other My car runs rough longer as some function of how long it sits in my garage. Doesn***8217;t feel like a Most times the car starts and runs fine, but sometimes it has the same problems at a lesser extent. . I have had the car for over a year with a P0174 code (system too lean, bank 2). New comments cannot be posted. Car performs well otherwise. Then about 20 mins later on the highway the "sevice engine soon" light came on. Jump to Latest 4. Jump to Latest 638 views 1 reply 2 participants last post by kenbunningham Feb 5, 2007. Go back and read jfoj’s thread on “Solve your misfires, lean codes, rough idle” as it lists pretty much all the common vacuum leaks and other engine running issues. when i started the car it was running rough and felt like it was misfiring, aftet driving for a while i did get a CEL for the misfires. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Two days ago, it developed an issue, ie, engine running rough after the car is on the road for at least half an hour. I managed to limp it home (about 1/4 mile luckily) and began to inspect it. jfields44r Discussion starter. (Jan 3rd 2013) Now my car no longer idles rough even when it's a cold start and starts a lot faster. Bought this car a month ago it’s been sat for over a year it’s a 325ci with 80k miles other than the idle it’s beautiful. Also I Hello My car is a 2003 BMW 318i Auto with N42B20 motor. Although I feel like I have bad gas mileage and performance when it runs E46. Sometimes the elm light disappears but My 330i has 110k miles and has had a rough idle for a month or two. If I drive it daily, or as the tank empties, the problem is less likely to happen. (Me looking at a BMW engine compartment is like a gorilla looking in the back of an alarm clock!) After the last full service (200Kkm) done by BMW Car was only giving one code 02 sensor voltage low I found one of the wires going to a 02 sensor was melted it was laying on the exhaust . The strange thing is that the engine runs fine when COLD. fcpeuro. i replaced the crankshaft position sensor and now the car still has a rough idle but is now throwing p1083 and p1085. I did replace all the CCV stuff while I had the manifold off and was VERY careful installing the new vacuum line connections. I am noticing that my car is running worse everyday. maddog2 Discussion starter. NGK plugs and valve cover gasket were changed recently blue smoke from exhaust, and rough running. Gently blowing out any debris is the method suggested and it I have still issues with my M54B30 engine that’s running a bit rough at idle, almost like a slight RPM surge. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Engine Running Rough - Codes P0171, P0174, P0741. My engine has been running rough and I'm looking for some ideas. And I have no problem what so ever before I stop the car and start it up again. The 'check engine soon' light came on. I will replace the lower boot tomorrow I have a 2001 325i that goes in and out of rough idle. When the CEL comes on, I'll turn the car off and back on and it will go away. But first I need to resolve fast some problems like after morning start engine is running very strange. All I'm running is a cold air intake, cat back exhaust and the stage 1 ots tune. Hey guys, so the 325i has been running rough for several months and has been getting worse. Other random little things. Thread starter CiTiBoy; Start date Dec 28, 2017; C. 214 posts · Joined 2005 Add to quote; Only show this user #1 · Nov 26, 2005. I took it to the dealer in 2003 and they had it for three weeks and could not find the problem. Please Help. I was able to continue to drive home, but very slowly. Joined E46 318i Stalls, rough idle. When in closed loop control, the DME can compensate for the leak. It also runs very rough when i press the throttle and the rpms jumps up and down. Have driven for hours with no problem, stop at lights, starts to misfire. When its ticking over you can feel the idle is a bit rough. I Not worried about the misfiring and rough idle right now, since it's running fine without the MAF sensor. 12648 Views 15 Replies 9 Participants Last post by 01E46Joe, Mar 14, 2011. 7litres of that is fresh fuel & one is 500ml If the problem still persists its either a disa, vanos, or fuel pump failure. Let me know what it is because I want to know as much as I can before i take it to my garage. 2001Silver330CI Discussion starter. Jump to Latest 156 views 1 reply 2 participants last post by leen Sep 25, 2024. Runs fine, drives fine above idle but come to a stop and she rattles not stalling but rough. Even though we have used a 2003 BMW 325ci to perform this installation, this article can be applied to any E46 3 series vehicle with the M52 or M54 six cylinder engine (with minor modification), including the 323i, 328i and 330i coupe, sedan and convertible. R. I have also conducted a DIY smoke test (several I have a 00 E46 323i and if I try to warm it up I will get misfire codes. I have to pull over to Every time i turn my e46 on and let it run, it always runs rough at low rpms around 750, but when i give it some gas it smooths out but will go right back to rough idling when the rpms go down, and when my engine codes i'm getting a P1188 code saying fuel control bank 1 sensor 1. Update: After a couple months with rough idle every cold start i decided to do an oil change 2 months ago. Driving it was another story. Scanned it and said cylinder 1,2,3 misfire with fuel cut off and vacuum leak code. Do not be overly alarmed. Just my two and a half cents worth Anyway, Car starts fine, seems to run okay, but if you give it a little throttle, and let off, it drops to about 400-500 rpm, runs a bit rough for a second or two, then bumps back to 600-700 rpm, but at first start, it idles a little odd and the exhaust REAKS. Jump to Latest 2. Since it's on both banks Rough idle when warm. I changed the plugs last winter, and I just changed the oil today. Hello ladies and gentlemen could someone please please help me with this problem iam having when i first start the car after it has been sitting over night she E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. If I turn off the car and re-start it runs fine for about 15 minutes, then it's back to running Hey guys! I am a relatively new e46 owner and am super in love with this car. 4144 posts · Joined 2012 Add to quote; Only show this user #6 · Sep 23, 2018. If I turn off the my bimmer and re-start it the car runs fine. Tried swapping and trying new coils and did plugs and nothing changed I've been throwing in parts hoping to clear the cel/ses light and i'm running low on funds. It has a SAP delete with bypass for rear o2s on the DME I recently changed. To be precise, it starts up fine and goes to 1000-1100 then dips to 600-800 and appears to struggle. Tags 318i idle n42 rough. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Hi Guys! So I recently got my E46 318i (2000 built) and I had to deal with some minor problems in the beginning like the MAF sensor, brakes, spark plugs, oil filter and 1 of the 2 O2 sensors wich initially made the service engine light come on and after dealing with that and erasing the warning the car ran like a charm for a couple of days and it started droping the So heres the story. 1K views 4 replies 4 participants last post by dohboyyyy Aug 31, 2016. The engine also sometimes drops the idle rpm a bit from maybe ~900rpm to 600rpm or so but still runs okay. winterbeater Discussion starter. RPM - Engine runs rough during the first few minutes of engine operation following initial cold start. it almost sounds like a diesel engine. The third time I started the engine it ran really rough the entire time. 6 posts · Joined 2021 Add to quote; Only show this user #1 · Sep 27, 2021. They stock mostly OE and OEM parts, so the quality is good, and all parts have a lifetime warranty. The service engine soon and EML lights are Ok so I've been having some rough Idling problems recently. Out of nowhere it just started misfiring and running very rough at idle to where it sounded like there were cylinders being shut off. Car has 110,xxx miles production date 01/2003. Sorry for the long post,but any advice help would be appreciated. I guess the fault codes showed. Reply reply tumbledrylow87 • Could be anything honestly, but VANOS would be one of my first suspects. Run cluster test 06 to display both fuel level sender values; one in each side of the fuel tank. 0 Reply. My 2 cents do with that as you will. Hi, engine is m43b19 (4 cylinder). Dec 28, 2017 #1 Howzit guys, I have an issue with my 318i Touring. First crank it starts but runs rough and dies. G. I unplugged the MAF and it idles and doesn't die. I'm not New to E46. 7 posts · Joined 2016 Add to quote; Only show this user #1 · Aug 31, 2016. jaguar · Registered. Miss fire. If I turn the car It started occasionally misfiring and stalling at idle. So I ordered a new MAF sensor and just put it in but surprisingly it didn't fix the rough idle issue. At a light, while it is sputtering, if I reeve the engine, it I'm dealing with an ongoing issue with my 2004 BMW 330ci and could use some advice. Service engine light comes on. when is in the state, Been having misfire issues, changed original spark plugs just yesterday at 93k miles for another set of ford plugs. Prior to these episodes the engine ran perfectly. The car lost power and died a few days ago and I parked it. The issue here is you also claim the RPM drops when you raise the windows, turn the headlights on or turn the AC on, this sounds light something other than the Power E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. It seems like whatever is causing the issue "warms up" and expands and the issue goes away completely after about 3 mins of running until the car sits again for a good while. We unplugged the MAF, it runs fine. What I AM worried about right now is all the steam coming out of my exhaust pipes when I start the car. First time posting and still learning BMW. My car tends to idle rough and has no power at times. Read the codes when I got home and it said system lean bank 1&2, and misfire E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. Knock on wood. Open comment sort I complained about Rough idle, Stalls while driving and RPM surges at idle. I just bought it recently, so maybe I am just imagining things, but it seems almost About 3 months ago though one day it stalled and the engine check light came on. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Bimmerforums is the preferred online BMW Forum and community for BMW owners. I notice the Lambda sensor heaters are still on, I'm going to be driving 70 miles later today so I can post the same data after that run. BAMFKaleb Discussion starter. 5K views 10 replies 8 participants last post by guzplace Sep 10, 2004 runs rough, stalls. At Bimmerforums, you will find technical how-to information maintenance specifics audio advice wheel and tire combinations and model specific details not found anywhere else. Could this explain the reason it runs rough? We put a different working MAF Rough. 327 posts · Joined 2014 Add to quote; Only show this user #1 · Sep 3, 2020. Things I have done. Dunno if it helps or E46 General. (Before the oil change, sometimes it could take a 2-3 seconds to start, now it starts in less than a second) Hello My car is a 2003 BMW 318i Auto with N42B20 motor. Rough running, misfiring and SES/CEL/MIL coming on at start up. Jump to Latest 3. but after spraying some throttle body cleaner on the lower boot while the car was running, the car accelerated slightly which means I have a minor leak there. A. Only codes seem to be result codes caused by the rough running. I took out the alternator even though it Today's Posts; Member List; Calendar; Forum; Vehicle Discussion; E46 (2001 - 2006) If this is your first visit, be sure to check out the FAQ by clicking the link above. :thumbup: help- running rough/idle issues . 5 posts · Joined 2024 Add to quote; Only show this user #1 · Oct 23, 2024. When the temps are in the 30s it takes two tries to start. First thing I checked were the intake boots, the top was cracked so I replaced it. The "brake" & "abs" lights are sometimes on. MAF was acting really strange too. Jump to Latest 31K views 13 replies 8 participants last post by shortair44 Sep 18, 2020. If anybody experienced the same problem. The car idles extremely rough. If you turn car off, set a minute and restart car, "eml" light goes off an car runs good for a period of time before it happens I took my car to the dealership (was under warranty til Sept. I then get a Very rough idle for about 20-30 seconds maybe and then it stabilizing at 600 rpm where it should be. But if it idles for even a minute it always develops a misfire which makes the car run horribly, think shaking and total loss of power. I don’t think it’s the MAF or DISA because the car idles and runs fine except when the AC is on. I have a 2003 330Ci vert with 193,000 miles (310,603KM) with a rough idle and over all sluggish Car is in excellent condition and runs very well. Jump to Latest 12K views 7 replies 2 participants last post by joeyb30 Jul 7, 2014. Sorry to bug you guys but I need help. After starting up my car, I was experiencing VERY rough idle and my SES light came on. 17 posts · Joined 2020 Add to quote; Only show this user #1 · Oct 9, 2023. Foxtrot_Uniform Discussion starter 3293 posts · Joined 2011 Add to quote; Only show this user #8 · Oct 24, 2014 (Edited) The rough running is not load dependent. The issue is that my car usually has a rough idle, but the biggest problem is that sometimes, while idling, my car I have a 2001 325i e46 (automatic) and I'm having issues with it running. Jump to Latest Follow 5K views 16 replies 6 participants last post by Fast Bob Sep 19, 2013. There are no codes I can read with my OBDII reader (I've heard some are only readable with the BMW tool??). when i first start it up, it idles very erratically and shuts off. Drives perfectly, is very good on fuel, and has plenty of power, and once running at more than idle speed, has no signs of E46 Running rough, lack of power, surging revs. But you can tell by the way the car is shaking, that its running rough. D. The misfires were fixed with new plugs and coils, it would then rev nicely with no Hello, my e46 is sometimes stalling and rough idleing and then stall, or when going from stop to accelerating car will stall. First 3 I got were related to Crankshaft Sensor. 18, 2010) and complained about a rough idle. I'm still checking to see if there's anything that can causing My 2000 328ci feels as if a couple of cylinders arent working because idle is very rough, lack of power and after a couple seconds of rough idling the car will immediately shut off unless I rev the engine. Also car runs rough at startup and rpm bounces 500-700rpm (sometimes backfires if i step on the gas) then 'kinda' evens out after about 20-30 seconds. Car has new o2 sensors, MAF, fuel pump, fuel filter, intake boots. Engine always start from first crank and run fine for 5 to 10secs and then start shaking more and more if no throttle applied until throwing codes (P1349 or P1347 most of the time, sometimes P1345 or P1353) it then run very rough as DME shuts injector on one I have a problem with my e46 320ci. 8 posts · Joined 2015 Add to quote; Only show this user #1 · Mar 8, 2015. Tests 1-2 are unlocked. Joined Then I looked into the "rough" display and noticed that cylinder 6 was running way rough. abeaujuin Discussion starter. Rough idle still exists on cold starts until warmed. I already replaced the O2 sensors, I'll have to scan the codes again but I am getting E46 General. The next day My car runs rough longer as some function of how long it sits in my garage. After u rev the car past 2000rpm it sounds ok. Runs great, etc BUT, it sat for about a year At cold start, the engine runs rough for apprx 1 minute. Open comment sort However, if the car is running the small amount of liquid that is in the vent tubing might not cause any serious harm just rough idling. There are millions of E46 out there that run perfectly fine with a rich mixture during a cold start. with a rough hot idle, but only when it is at full running temperature. Share Sort by: Top. Hello, A friend at a small workshop recently worked on my N46 engine. ChatGPT or Google should be able to help you. After the engine heats up and I restart, runs well. NFL NBA I've got an '01 330ci that only runs rough and misfires when I'm stopped (at lights for example). r/e46 A chip A close button A chip A close button I've got an '01 330ci that only runs rough and misfires when I'm stopped (at lights for example). The issue here is you also claim the RPM drops when you raise the windows, turn the headlights on or turn the AC on, this sounds light something other than the Power Hello My car is a 2003 BMW 318i Auto with N42B20 motor. Hokball Discussion starter 1 post · Joined 2024 Add to quote; Only show this user #1 · 2d ago. Hey guys, as the title states, Street about a minute or so of idle, my car starts to run really rough. Engine runs very poorly. joeyb30 Discussion starter. Help. I rough idle after sitting for long periods of time. NGK plugs and valve cover gasket were changed recently The next time I started the engine it ran a bit more rough and continued to run rough even after getting fully warmed up. I replaced the upper intake boot as well. I swapped the coil from Cylinder 6 to cylinder 1 (these are paired cylinders in the I-6 orientation). Car felt like it had no BMW 3 Series Forum - Technical Talk on the BMW E46 I've been having rough idle issues & bad gas mileage for the last few months and whenever I unplug the mass air flow sensor the idle becomes smooth again. A sticky Vanos solenoid can cause hard start and rough idle. So I replaced the MAF and it still runs rough and dies when the MAF is plugged in. Bingo Bad coil. Make sure that you take your Was the car running rough and stalling before you did the top end rebuild? Or is this new? You can run INPA to check codes and live data. Really need help with this 2002 BMW E46 2. I have no special sofware or tools so rely on BMW for my servicing and repairs. :thumbup: E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. 1K views 2 replies 3 participants last post by TobyB Oct 9, 2023. Step #2: Check all the engine codes, besides the few obvious ones (due to obviously not so great maintenance from the previous owner) My m54b30 swapped 2003 325i has cylinder 1,2,3,5 rough. I have a 2000 323ci that has been running rough all of a sudden. runs rough, gear icon. I'm having issues with my car throwing codes for Check the basics first. Could I have confused something in the computer? My engine has been running rough and I'm looking for some ideas. The day I test drove it there were no lights on Go to e46 r/e46 • by YourFriendlyLion. any ideas ? I recently bought a 2001 316i and have since found that it intermittently runs rough on idle (no problems at higher revs). I am starting to think it is either the camshaft position sensors or BTW, I've filled up from an almost empty tank several times (not that I was trying to prove anything), and have never experienced rough idle/stalling, etc. Jump to Latest 48 views 0 replies 1 participant last post by Hokball 2d ago. Issue with rough idle and cold start misfire if the engine has been running cold for a long time sometimes can be a side effect of a cold running engine. Perhaps that***8217;s not the best thing to do when your gas contains 10% ethanol. 01E46Joe Discussion Starter · Mar 12, 2011. I checked the codes and had the following come up. I also had copies of the two TSB's with me and he said they need a check engine light to replace those, or stored fault codes. The next day What is happening is, on idle, the car seems to be a tad shakey. As @M3AN said, these things suffer from the sealant on the top of the coil packs failing, something that won't be picked up from a scanner. Save Share Reply Quote Like. It's in great shape all around. Tags #bmw #e46 #e46 325i. - Engine hesitates/poor throttle response during first few minutes of engine operation following initial cold start. Help - engine running rough. However, if the car is running the small amount of liquid that is in the vent tubing might not cause any serious harm just rough idling. anything's I'm having cold morning start rough idle with misfire on cylinder 5. Silicone spray on all What is happening is, on idle, the car seems to be a tad shakey. 29 posts · Joined 2016 Add to quote; Only show this user #1 · Jan 13, 2018. What is the present mileage and have you changed the your VANOS seals, in the 323i the VANOS seals will need to be replaced after a few years. This is somewhat normal on older cars during very cold weather, usually due to aging parts and lack of maintenance. Niko323i Discussion starter. Wouldn't go past 20 - 30 mph. I am in Australia (so right hand drive - hence - maybe slightly different engine compartment configuration). E46 Instrument Cluster Test Incase no one knows here's how to do it. 0 Please note, the cars been sitting for 2years & has 1 third of a tank of fuel. It starts and runs fine but this problem which first started a week ago with one short burst of rough, has become much worse. It isn’t as smooth as it was before. I have been experiencing rough cold start idle for a while now. Could there be an air leak? Where could it be? I have already check the twin hoses, one of which connected to the back of the engine (see picture one). I am trying to identify the cause of a problem with my car. 2, 1. 9 posts · Joined 2013 Add to quote; Only show this user #1 · Sep 20, 2013. The car sometimes idles rough and accelerates slow, when this happens I turn off the car wait a little bit and the symptoms go away. Tags misfires detected rough idle sluggish. Jump to Latest 11K views 18 replies 6 participants last post by abeaujuin Jan 4, 2006. Ive tried to start the car and get it properly running about 3 different times now, but it just keeps stalling out after those 3-4 seconds of rough idle. Sports. Second crank, all good. The injector pressure, coils, sparks, and injectors all seem good. It idles rough and continues to run rough throughout the rev range, smoothing as it revs higher, but still noticeable. E46 General. Ever since then it develops a misfire and sounds like a tractor after a couple of minutes running (rough idling still in evidence) and even when warm the car won't idle properly. The car wont idle and it feels like it doesnt have any power at all. When the engine is cold and I start up the car it idles fine but after it gets warm and I turn off I believe the ecu runs its own crank / cam correlation test from crank and cam sensors, it knows when tdc for cylinder one is and from that it should be able to know which cylinder is running rough - could be wrong but that's what seems logical to me from previous training courses I've been on. Fit the new I cleared them and let the car go for a day to collect fresh codes. If i put a rubber glove over it it gets sucked in when loose but if i put any tension in the rubber it overcomes the vacuum. The service engine soon and EML lights are I complained about Rough idle, Stalls while driving and RPM surges at idle. I have owned the car for over 10 years and over 100,000 miles and it has generally been well maintained. I. Car has been running even smoother now that I replaced the ignition coils, maf, and just did my oil change. They seem fine The engine control runs in open loop control, the O2 sensors are not used and the fuel trims are not updated or used. For that matter, the engine has not run rough at any time since I've had the car (since Jan. lxhhvjlewruzdqktmmxfvypcplgjfufukdvlgcivbihfls