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How to fix my car

(1990 Cadillac DeVille)
in Greeley, CO on December 12, 2010
my car idel real high and when in park it even higher
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on December 28, 2010
Possible worn out throttle body. I experienced similar symtoms, turned out to be my throttle body accellerator shaft port was worn out and that the throttle position sensor(TPS) would not set back to the specified idle angle. I had the shaft ports welded closed and redrilled to specs an havn't had the problem reocurr.
on December 12, 2010
Sounds like a sticking idle control valve or a vacuum leak.
on December 13, 2010
one thing you can check is your tps senser. if your check engine light is on you can go autozone,pepboys,advance auto parts.someplace like that
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