I have a 1990 Buick regal 3.1. when i put in the diagnostic tester, it teels me i have a knock sensor error. the car runs fine for about 5 minuets and then something messes up and it has a very rough idle and will then stall. i replaced the egr valve and also the idle air control valve. i dont know what to do please help. THANKS
Jan 7, 2008 at 4:53 PM