1997 3.5 idle at 2100rpm
#1
1997 3.5 idle at 2100rpm
After installing a new plenum intake gasket on my 97 conocrde 3.5..it did make the check engine lite go out.....I had also reset timing since i fixed a water leak...problem now...when car is started cold idle will be around 1000--still high--but as car warms up it jumps to 1500,then to 2100...I have double checked every vacuum port connection....Only thing I didnt do on the plenum gasket was use silicone type sealer--i installed it dry after both surfaces were completely cleaned off...
I wonder if I am leaking at intake...but then the check engine lite should have stayed on......
anyone have similar problem and what fixed it? thanks...Jeff
I wonder if I am leaking at intake...but then the check engine lite should have stayed on......
anyone have similar problem and what fixed it? thanks...Jeff
#2
Browse around the forum and you will find a few threads discussing high idle speeds and the causes. It's almost invariably a vacuum leak. As far as the engine is concerned, it's the functional equivalent of an open throttle. One way to find a leak is with a tube held close to your ear. Probe around the intake manifold with the other end until you hear the ocean.
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