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Re: Cant get this 3.9 to idle smooth,
Posted to Technical Discussion Forum on 2/25/2008

Hey Scott,

Thanks for the response.

My fuel trims are great as in +-5 short and long. O2 sensor switching ok but not real good. Adding fuel or air doesnt seem to help either way. I dont have a gas analyzer,, wish I did. Vacuum as steady as a rough engine w... Login to read more.