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Old Nov 24, 2006 | 06:11 PM
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trevorr
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Idle Problems
My 98 expedition will die when I go from park to reverse or drive (warm or cold). Would this be the IAC valve? The computer is showing no code. It also idles rougher than normal.

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Old Nov 24, 2006 | 06:28 PM
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From: charlotte nc
Talking vac leak
often a vacum leak will cause what you describe. Check all of them before you start looking at the sensors....
 
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Old Nov 24, 2006 | 06:42 PM
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Where would be a good place to start looking? Is there a vaccum line that commonly goes bad?
 
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Old Nov 25, 2006 | 12:31 AM
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Could be your pcv valve line
 
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