Engine Performance problem
1990 Pontiac Grand Am 4 cyl Front Wheel Drive Manual 45000 miles
I have a 1990 pontiac grand am with a 2.3 HO Quad 4 (vin A) engine. Recently after driving it I shut it off and went in a store. When I came out and restarted it, it seemed as if it were running on only 2 or 3 cylinders. I took it home and found a loose spark plug and cracked boot retainer. I replaced the spark plug caps & boots. Put it back together and it ran fine. Drove it about 5 or 6 miles, shut it off, and when restarted it, did same thing. Replaced plugs thinking one maybe had a crack (had new coils & alternator last year). Drove fine until I shut it off, but when restarted, did same thing. Thinking might be ignition module getting hot causes problem (only thing left up there to replace), but even after it cools down it misses until I pull everything apart and then put it back together. Pulled the IDI cover and grounded all plugs while in boots and all seem to fire fine. Exhaust fine, new fuel filter. Totally confused, but I am sure it is ignition related.
have the same problem?
Tuesday, August 12th, 2008 AT 11:34 AM