BMW E60 Rough Idle During Cold Start Up.
06-13-2015, 08:19 PM
#11
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My Ride: '04 545i
Have you replaced your CCV valves? I had a rough idle going on since I bought the car a year ago. Worse on cold startup. It would act like it wanted to stall but wouldn't. Finally changed my CCV valves an it helped quite a bit. Much smoother idle and driving.
04-12-2020, 09:21 AM
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Gergang I know this might help but I think clean the idle control valve maybe it is the condensation in the inter cooler causing it to misfire really bad and shake like that! Maybe the inter cooler is bad hope that helps
04-12-2020, 08:30 PM
#14
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Wow, resurrected a thread that was dead a very long time. Note the OP has a 530i so no intercooler. M54 motor is NA.
Last edited by kd7iwp; 02-02-2021 at 10:11 AM.
02-02-2021, 07:29 AM
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My Ride: BMW 535i
Model Year: 2008
I had this problem on my 2006 330i N52 engine.
First time it happened the fuel injectors were leaking over night, causing too
much fuel in the cylinders at cold start up in the morning. The car would run rough
until the excess fuel was burned. Changing the injectors fixed it.
It reoccurred later when I had an ignition coil get lazy. Cold starts would be jerky and then smooth
out after the engine ran for a bit. I replaced all 6 coils, and she was smooth as silk until I sold her.
My current 2010 535i n54 is in the shop right now for the same issue. They have yet to resolve it. I'll write back here
and tell you what fixed it once they complete the repair.
My moms 2008 535i has the same cold start idle roughness...
In my experience, these N54 and N52 cars are REALLY sensitive to the condition
of the fuel/spark/ignition systems. All it takes is one plug, injector or coil to roughen the idle.
First time it happened the fuel injectors were leaking over night, causing too
much fuel in the cylinders at cold start up in the morning. The car would run rough
until the excess fuel was burned. Changing the injectors fixed it.
It reoccurred later when I had an ignition coil get lazy. Cold starts would be jerky and then smooth
out after the engine ran for a bit. I replaced all 6 coils, and she was smooth as silk until I sold her.
My current 2010 535i n54 is in the shop right now for the same issue. They have yet to resolve it. I'll write back here
and tell you what fixed it once they complete the repair.
My moms 2008 535i has the same cold start idle roughness...
In my experience, these N54 and N52 cars are REALLY sensitive to the condition
of the fuel/spark/ignition systems. All it takes is one plug, injector or coil to roughen the idle.
Where you able to get the problem fixed? Thanks in advance.
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blackonblack
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04-23-2014 01:46 PM