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Re: throttle setting
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Posted by Saana88 [Email] (#207) [Profile/Gallery] (more from Saana88) on Mon, 2 Feb 2009 14:51:30 Share Post by Email
In Reply to: Engine sometimes stalls at high speeds, Dan [Profile/Gallery] , Mon, 2 Feb 2009 09:30:26
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You should not have to adjust your throttle from the factory settings, so don't unless you know you have no timing/injection/vacuum/ground issues or you think it's been meddled with in the past.
The first step is always to clean around the throttle body, and if you have a 16 valve engine (not specified, there were 8 valve turbos for a while) clean the idle valve repeatedly. If your car has a dashpot, test it. How old is your oxygen sensor? Have you checked the fuel injector seals for leakage?
The throttle valve is a precision part. Just a little gunk in there will change your idle speed drastically. Also, the AIC valves have been known to gunk up (does this happen only with a warm or cold engine?) so just start blasting them out with penetrating oil once a year. If that valve sticks closed, your idle will nosedive on its way back down from higher revs before the valve gets unstuck and the engine recovers.

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