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rough idle

  1. General E46 Forum
    Hello, first post so let me know if I should do give more info. Make and model: 2001 BMW 330i (104,000 miles) Lets start from least serious issue to most, firstly there has been some issues with starting the car, I will turn the key and it will turn over and “crank” for a few seconds then I...
  2. General E46 Forum
    Hey guys so I’ve got a 2003 330i and I’m having trouble diagnosing what’s wrong with the car. Out of nowhere the car shakes pretty good at idle and has a large loss of power when driving. It threw codes for cylinder 3, 4, and 5 misfire and fuel cut off. I replaced the fuel pump knowing how...
  3. General E46 Forum
    I know, I know that there are countless threads for misfires but this seems a bit trickier. Ive read and read and read and for some reason i'm still dealing with this issue. I've brought it to a couple shops and it seems like i'm not getting any answers. Just recommended things to replace that...
  4. General E46 Forum
    Dear people, I am a new E46er having some issue starting up some times, My car 318CI died sometimes after a rough start, but in every time i started the car again it runs well, it does that only when it's a bit warm. OBD2 scanner showed P0420, any help!
  5. E46 Xi Forum
    Hey guys I’m having some misfire problems so I gotta 2004 325xi and it has a really long time to start in the morning or after it has sat for a little while and tends to die shortly after it starts. It idles rough and it gets worse after about 5-10 seconds of idling. The Check engine light is on...
  6. UK
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  7. General E46 Forum
    Today I took my 04 325i (auto, M54 2.5l - 218,000 miles) to a local euro shop (with nothing but great reviews of course) and addressed a vacuum leak I had which would throw P0171. That leak was the hose connecting to the fuel filter. The reason i took it to the mechanic is due to a power loss...
  8. Europe
    So last Sunday I was driving my car and everything was normal and at once the the rpm dropped down to like 300rpm, and a clicking noise was coming from the fuse box, and when I press the gas pedal it goes to like 1500 rpm but then start to die. so I checked the codes and P0335 came out. so I...
  9. General E46 Forum
    Ever since I bought the car, there was been a rattle when it's idling. This only happens when the car is in "Drive," or "Park." The engine runs smooth, it has no problems accelerating, and it has always runs strong. I guess since it has never progressed, the idle hasn't really been an immediate...
  10. General E46 Forum
    Hello. I have a problem with my e46 320ci. The car wont idle and it feels like it doesnt have any power at all. It also runs very rough when i press the throttle and the rpms jumps up and down. I diagnosed the car with an OBD scanner and it said it was a bad mass air flow sensor so i changed it...
  11. General E46 Forum
    Let me start off by saying... yes my DISA is screwed, the flap is very loose. I've been trying to figure out what's been wrong with my car it was working fine a month ago then as i was going up hill i heard a sort of knock sound and my car was running like crap once again. I didn't suspect...
  12. General E46 Forum
    325ci with 180000 miles, replaced vacuum lines on the rear of intake manifold, replaced intake manifold gasket, new fuel pump and fuel filter, new brake booster and mass air flow sensor. Car idles at 500 and doesn’t like to rev but as soon as it revs past 1100 or so RPM it completely smooths out...
  13. General E46 Forum
    I haven't found any discussions about my current issue... I might've not looked hard enough but i want to talk about the issue i'm having with my current 04 325i M54 engine. There's this odd rattling/buzzing sound when i accelerate above 2000rpms until 4000rpms and then it stops, but as i'm...
  14. General E46 Forum
    Hello, I encountered a problem with my e46. There is annoying screeching noise coming near DISA. I took out and checked DISA few months ago, it seemed alright. I don't wanna speculate here so I will leave a video with that noise and perhaps somebody had exact same issue and knows the solution...
  15. General E46 Forum
    Hello! I recently did a swap from b25 to b30. But since the first start the car have been running rough... in idle you can feel the multiple misfire and the fuel trims are super lean and rich, bank1 28% and bank2 -28%... and the long term fuel trim does not register anything :loco: This will...
  16. General E46 Forum
    As a New Yorker who suddenly cannot use public transit for health concerns (please don't take this political) I actually need my car. Of course, it developed a sudden problem on Sunday while I was away checking on my parents. The car seemed to struggle at idle and actually stalled as I pulled...
  17. General E46 Forum
    Let***8217;s just say this I had to pull the engine out to replace my disgusting after market headers that were not sealing properly (previous owner), I had to remove the transmission which was impossible to disconnect to due a seized top stud. Even with the engine and tranny out together it...
  18. General E46 Forum
    My 2005 330i zhp was running fine then power dropped and idle would surge from 1000 rpm to 1500 rpm. Did not respond to throttle. Checked engine codes and got P1635 and somtimes P1634 both about the throttle body adaptations. Did some searching didn't find much. Took the car to the Dealer and...
  19. General E46 Forum
    Hi all, Although this is my first post, I have been using this site as a reference for a while now! I have a 2002 318ci (n42 engine) automatic. I’ve got an issue that’s now really bugging me! The problem started about 2 weeks ago when my alternator packed up whilst driving home along the...
  20. General E46 Forum
    Hi guys. 2005 330xi. 160,000 mi. Hoping to get a little expert advice trying to pinpoint this misfire problem I'm having. I read for hours but couldn't find matching symptoms. 2 weeks ago I started having these rough idle/random misfires right after i got gas somewhere. Maybe coincidence...
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