tach is showing higher than dealer ecm. tach shows idel at 1,000rpm in park, drops 100rpm in drive. did not have any problems with tach or idle previously. dealer ecm shows 760 at idle and 680 in gear. thanks
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tach is showing higher than dealer ecm. tach shows idel at 1,000rpm in park, drops 100rpm in drive. did not have any problems with tach or idle previously. dealer ecm shows 760 at idle and 680 in gear. thanks
really need some help on this. dont know what to try next.
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