Re: Reasons for deceleration vibration
If you have repo engine splash pans installed, check the four locations where they bolt to the engine pans. There is a tendency for the tabs for break off and cause a horrendous vibration on spool down. I had this happen on two cars. I fixed them by making stepped brackets that fit over where the tabs broke off at all four locations. It required longer pan bolts at these positions.
Tom Endy.
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