Engine Revs Unintentionally
Dec 25, 2009, 03:04 PM
#16
I've noticed this problem when my engine is still cold too. When I first start my engine it idles at 1500 rpm once it warms up it drops to about 1000 rpm. But then when I'm at a stop light not even steping on the gas my rpms go up from 1000 rpm to about 1350 rpm. After like 4 seconds it stops and goes back to normal at 1000 rpm. It stops doing this after the engine is fully warmed up. Is this normal?
would a leak in any of the piping couplers cause this?
Dec 25, 2009, 03:08 PM
#17
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it looks like the throttle body has a idle air control valve on the bottom of it. i would try to take the t/b of and remove the aicv and try to clean everything good and see if that helps
here is a pic of a stock t/b
http://tdi-plc.com/blog/wp-content/u...2633-small.jpg
here is a pic of a stock t/b
http://tdi-plc.com/blog/wp-content/u...2633-small.jpg
Dec 27, 2009, 03:44 AM
#25
my tuner told me to zip tie all the vaccuum lines and i think im gonna do that very soon especially since my car is just chillin in my garage away from the snow (until i re-instate the insurance)...
Dec 27, 2009, 05:09 AM
#26
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I have been having the same issue, even when its warmed up, when i come to a dead stop, throw it in neutral, and the rpm sometimes goes from 900 rpm to about 1000-1100 then drops down to 900. not sure what to check for either.
would a leak in any of the piping couplers cause this?
would a leak in any of the piping couplers cause this?
Feb 1, 2010, 03:26 PM
#29
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if you have a/c even if you dont have i turned on it may be cycling on and off ( clutch kicking on and off for the compressor ) causing the rpms to go up and down.
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