Low idle at stops, only after the car warms up.

2001 OLDSMOBILE ALERO
88,000 MILES
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JPOZ
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This problem was diagnosed by 2carpros as possibly the IACV, however I didn't mention the idle became low only after the car warms up. The pepboys shop diagnosed the problem as a leaking manifold gasket. Does this seem right, after taking into account the warmup condition, or is it the IACV afterall?

Thanks for your expert help.
jwpoz
Nov 26, 2011 at 6:46 PM
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JACOBANDNICKOLAS
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Usually, after warm up a vacuum leak at the intake lessens. Steel expands when it gets hot. Have them show you how they know that is the problem.
Nov 26, 2011 at 6:49 PM