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Old 07-30-2011, 06:14 PM
Fordzilla80 Fordzilla80 is offline
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Join Date: Oct 2010
Posts: 8,952
Default Re: another rough idling scenario -- '99 3.0L

Cleaning the IAC only works as a preventative measures. If your idle is severely affected, then it's a good possibility the damage to the IAC has already been done.

I would check your EGR as was mentioned before.
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