When I'm sitting idle at a red light the car it like kicks I call it a heartbeat but it is getting worse have had it plugged into a computer and nothing is showing up there's no lights on either . Have put a catalalage converter cleaner through it and made no difference no one has any idea what it could be. I can feel it under my seat when it happens when driving it's fine it's only when I'm sitting idle.
Apr 5, 2017 at 6:51 AM
