rumble

[manuel]

my car is running like crap. it rumbles really bad at idle and during acceleration. the RPMs also fluctuate going high as ~1.5k and as low as ~500. what can be causing this?

 

[Kirby]

Could be one of several thngs. Is the check engine light on at all? If not, a vacuum leak, bad gas, dirty injectors, or maybe the MAF (Mass Air Flow) sensor.

 

[epj3]

Probably the idle control unit and/or valve. Have fun finding one for a price that doesnt make you cry.


http://member.rivernet.com.au/btaylor/BMWText/technical/IdleControlValve.html

 

[manuel]

thanks dudes.