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Re: Idles high after going from park to gear and back.
Does it have hydra-boost or vacuum assist power brakes?
A torn diaphragm in the vacuum brake booster can move and leak at varying amounts each time the brake pedal is pushed so when you apply the brakes to put it in gear the leak is affected.
Did you take note of the IAC count at hot idle in Park? If so what was it.
Did you ever see the IAC count go to zero?
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For those of you that are wondering why you are not getting replies to your thread:
Did you give the model, year, engine, fuel system type, and transmission information?
If it is modified from what came stock from the factory, let us know that too.
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