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  1. E90/E91/E92/E93 (2006 - 2013)
    First off I do have a vcg leak back passenger side, it's small. Sometimes when I start the car especially after it's been sitting for hours it will shake for a few seconds then even out, as I'm driving I don't notice any difference and the car seems to run well actually. Thought about cleaning...
  2. E60 / E61 (2004 - 2010)
    Hello Guys, I have a 2007 6 speed manual 525i E60 N52 with 69k miles. Starts fine, then a rough idle surges up to around 12-1500 rpms then it slowly settles.. after it settles it almost stalls but "bounces off of 500 rpms up to around 7-800 over and over.. weird part is at this point when I...
  3. E36 (1991 - 1999)
    I needed to replaced my ccv and icv so I needed to remove my intake manifold. I removed intake manifold and installed both parts. Then re installed everything back in order how i took it out but now my car idles super rough and barely wants to stay on at idle. I also seen a small hose with a...
  4. E60 / E61 (2004 - 2010)
    Hello I have a 2007 6 speed manual 525i E60 N52 with 69k miles. Starts fine, then a rough idle surges up to around 12-1500 rpms then it slowly settles.. after it settles it almost stalls but "bounces off of 500 rpms up to around 7-800 over and over.. weird part is at this point when I attempt to...
  5. X3 F25 (2011 - 2017)
    I desperately need some help with the 2011 X3 N52 I am working on. This is going to be a bit of a long winded post. A little backstory, I purchased the X3 from copart a few months ago with mechanical damage, and after it arrived I decided to just replace the whole engine as that was the cheapest...
  6. E90/E91/E92/E93 (2006 - 2013)
    So earlier today I went into a car wash that was touchless. The rear garage door to the wash bay closes and it gets really steamy in there. I noticed, about 3 minutes into the wash, that my engine rpm was jumping up and down between 600 and about 1500 rpm sporadically. It was not chaotic but it...
  7. E85 / E86 Z4 (2003-2008)
    Hi everyone, Trying to track down a rough idle issue. I recently replaced my Valvetronic motor and gasket. Problem is a little better, but I'd like to calibrate the motor before replacing the Eccentric shaft sensor. I don't have any oil leaks and the plug to the Eccentric shaft sensor sensor is...
  8. E39 (1997 - 2003)
    Kia Ora team! First off, thank you to everyone who (has and in the future) contributes to all these forums, you are the real legends and the world need more people like you! keep being you. Heres the run down, I'll outline the situation, what I've done, and what I'm thinking of doing next...
  9. X5 E70 (2007 - 2013)
    My 08' 4.8i has been "Acting up" lately and I would like to receive input on possible issues before I schedule to have it diagnosed professionally. The idle when in park, or stopped at a light, isn't suuuper rough... but it does have a pulsating rhythm to it instead of a steady purr. There...
  10. E60 / E61 (2004 - 2010)
    I currently live in the UAE and I bought a used 2009 525i, that appeared to be in great shape, however after having it a couple months and having some work done on it, I am starting to have a few problems. The single biggest thing is rough idle after a cold start. My code reader flags a P0155...
  11. 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...
  12. 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...
  13. 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...
  14. 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...
  15. 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...
  16. 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...
  17. 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...
  18. 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-...
  19. 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...
  20. 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...
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