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rough idle
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  1. E30 (1982 - 1993)
    Hi all, Recently picked up a 1984 318i M10. When I got it the car didn't idle very well, would dip a little but always come right back up. Also had some flooding problems if I'd turn the car on too soon after turning it off. Now my problem seems to have escalated: When I turn the car on, the...
  2. E90/E91/E92/E93 (2006 - 2013)
    I took myself car in to a car shop to have my valve cover gasket replaced last Saturday (diagnosed by BMW dealership). after getting my car back the mechanic told me the car engine pressure was high and it was going down when they removed the oil cap and the car was idling a little bit rough...
  3. E90/E91/E92/E93 (2006 - 2013)
    Hi, I’m quite new to owning a bmw and cars itself, but i‘ve been reading on this topic a bit but cant find an answer that actually helps me. I‘ve had a BMW e90 325i 2005 for almost a year but from the beginning it always had the problem of rough idle and occuring check engine lights and as i...
  4. E90/E91/E92/E93 (2006 - 2013)
    my engine idles rough after cold starts and when i'm in gear, mostly when in drive and reverse but it does happen in park and neutral but not nearly as severe originally had codes for my vanos solenoids, after replacing both with brand new oem replacements the rough idling hasn't gone away...
  5. E90/E91/E92/E93 (2006 - 2013)
    Here is the issue, my e92 320i (N46 engine) was suffering from a rough idle (when hot) = did an OBD check found out the map sensor wasn't feeling good changed its o ring and cleaned it worked fine! Now, from a while ago after replacing the intake manifold gaskets (oil leak..) and running the...
  6. X5 E70 (2007 - 2013)
    2007 X5 4.8i 170k miles The car recently started having issues with a misfire, rough idle, and hesitation. When the problem first occurred it was the following day of a mountain trip, the drive is very tough on any car, and the next day in a rush I did not let the car warm up fully and about 5...
  7. E39 (1997 - 2003)
    I’ve got a 2002 540i with the M62 with 92k miles on it. A while ago, when I first got it, it threw a code for a malfunctioning camshaft position sensor on bank one intake, which went away after a few days for some reason. Within the past year or so, it’s started to get a really rough idle and...
  8. E39 (1997 - 2003)
    Hello there! So I've been having some trouble with my 1999 BMW 528i lately. It started while I was in traffic about a month ago when the check engine light came on. I promptly drove it down to the local autoparts store to use their OBDII reader and it came back with the following codes - P1421-...
  9. E60 / E61 (2004 - 2010)
    My brother‘s 2007 530i has a flaky #1 cylinder. The car has a rough idle, but seems to drive okay. I have done a cylinder disable test and turning off each fuel injector causes the engine to stumble, except for #1. Turning that fuel injector on and off doesn’t make any notable change to the...
  10. X5 E53 (1999 - 2006)
    I have a 2002 3.0, with 240K on it. This saga started after a cocktail or two, maybe. I had a 1/3 tank of gas and I added about a half can of seafoam to the gas, which was most likely 93 octane with ethanol. I was down to about an 1/4 tank or 100 miles and I was hammering on the throttle. At...
  11. E36 (1991 - 1999)
    Hi all, Recently, I had a problem with my car backfiring internally, which made it sound like it's timing was completely off. Listen to the noises and how it ran here. Along with this were the symptoms of the brakes being rock solid, meaning she had a vacuum leak and after fixing this I got...
  12. E60 / E61 (2004 - 2010)
    My 2008 E60 has a rough idle while in drive and reverse it seems, It will vibrate for a second or two then stop and keep repeating. If i turn the steering wheel to the left or right it will disapear. I also sometimes can put my foot to the ground on the accerlator and the car just wont do...
  13. E60 / E61 (2004 - 2010)
    Hello, So here we go... I have a 550I 2008 70K Miles. I changed the VANOS solenoids, purchased SMP from Rock Auto. I stupidly switched the harnesses on bank 1, and my car was erratic. I drove for a little like that, because when i pulled off to test, it wasn't all that bad, thought oil just...
  14. E90/E91/E92/E93 (2006 - 2013)
    Have a weird issue with my 07 320i n46 Bmw. Starts up fine with no issues, runs like a dream until engine gets to operating temperature (105 ° celsius ) . When warm the car has a rough idling and also a light rattle while revving. It will throw code p0012. I've changed the chain tensioner, both...
  15. X3 E83 (2004 - 2010)
    Hello all (please read) Our story begins 5 months ago when i bought my X3 3.0 Xdrive (M54) for $2500. I knew it had a bad CSB and u joint but the engine ran great aside from EVAP codes and lean bank codes (vacuum leaks that were soon fixed). I replaced the staked in ujoint, CSB, and guibo for a...
  16. E60 / E61 (2004 - 2010)
    So I recently changed the valve cover gasket on my 08 535i to resolve an oil leak issue. No issues there except when I started the car for the first time the engine idled really weird. The idle would do short surges from 1000 to 1500 rpms and would not repond to the gas pedal. No codes were...
  17. E90/E91/E92/E93 (2006 - 2013)
    Hi guys! I am turning to you for help as I have spent quite a lot of money trying to fix a “loss of power and vibration” problem with my BMW 325i (e90, 2007) with N53 engine. The problem I have is rough idle (occasionally there is a misfire when I stop at traffic light but it is quite rare) and...
  18. X3 E83 (2004 - 2010)
    Hey All, looking for some help with my new-to-me X3. I've had it for ~2 months now and have been working on it ever since. There's a lot of unresolved issues with the car it seems. 2008 BMW X3 with 72,000 mi The latest issue happened for the first time today while in traffic. I was coasting...
  19. E90/E91/E92/E93 (2006 - 2013)
    Hi All, I finally pulled the intake to do a walnut blast at 110k. I had been having power issues, and rough idle occasional limp home mode. I also pulled the injectors and sent them to tested and cleaned (Bec's Pacific in Whittier, CA - very happy with their work). As it turns out (and many of...
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