Question about 2001 Cadillac DeVille
My car engine idles up and down after I start it.I put a massive air flow sensor on it. but that did not solve the problem.It sounds like there is air coming from the back of the intake makeing it sound like it needs a tuneup.someone said that the motor sounds like it is loseing pressure and running on six valves instead of eight.the service engine light is on and a few more are on. It want pass a smog.
Try checking all of the vacuum hoses,..such as the power booster for the braking system,EGR valve hoses,from the sound of your description,it is loosing vacuum.
Posted on Apr 13, 2009
There is an accordion like duct near the manifold that can crack My engine bushings had gone bad and the motor moved around making it tear We stumbled upon this by mistake we could clearly hear it was sucking air and thought it was the plastic intake manifold but that was fine I cant remember the whole part name but it it black and has folds in it Has the word duct in it.
Posted on Aug 02, 2009
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Posted on Jan 02, 2017
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