car is revving by itself!

[nuwde]

i have a 92 525i. when i'm stopped, the car will rev itself slightly. my idle rpm is about 8-900 and it goes up to about 1300. it does it every couple of seconds until i put my foot on the gas. anyone ever have this happen to them? what might it be related to? Thanks for any help!!

edwin

[Rodericb]

i have a 92 525i. when i'm stopped, the car will rev itself slightly. my idle rpm is about 8-900 and it goes up to about 1300. it does it every couple of seconds until i put my foot on the gas. anyone ever have this happen to them? what might it be related to? Thanks for any help!!

edwin

[Paul in NZ]

maybe the icv /tps cleaned themselves or maybe a batch of bad gas????try an italian tune up with a fresh tank of gas.

[Jeff N.]

.

[nuwde]

hey guys, thanks so much for the replies.

what is an icv/tps and an italian tune up? i don't know what you guys are talking about.

thanks!

[Jeff N.]

www.koalamotorsport.com, follow "complementary repair instructions", E34, hunting idle for how to replace the ICV.

The ICV is the idle control valve - the part responsible for a smooth idle.

An italian tune up is slang for going out and running car hard - high rpms basically. Italian tune ups sometimes work for cars that putt around town all day and never have any extended higher RMP run time - help blow the carbon and crud out of the car that often gums ups misc engine parts.

Hope this helps...

Jeff

[Paul in NZ]

:p