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Chevyman2 · 05-24-2018, 08:07 PM

Had that happen in Ls3 was one of spark plugs changed and tach stopped bouncing.

Edit: This occurred at idle only

05-24-2018, 08:07 PM	#5
Chevyman2 Drives: 2018 zl1 Join Date: Dec 2012 Location: Caswell County, NC Posts: 599 View My Garage	Had that happen in Ls3 was one of spark plugs changed and tach stopped bouncing. Edit: This occurred at idle only Last edited by Chevyman2; 05-25-2018 at 12:41 AM.