Ok i am at my wits end here! I have a 90RS 305 tbi. sometime when i drive down the road and go over a bumby road the tac will jump which in turn causes the engine to lug and jump. I have a mechanic friend that told me it flashed code 53 and that was the vats modual code. I have been having to wait sometime to start the car because of this 4 min delay.. could these two problems be related? any help would be apreciated. Thanks
JOHN