1996 Pontiac Bonneville 6 cyl Front Wheel Drive Automatic 60000 miles
I own a 1996 Bonneville with a 3.8L engine with 60K original miles on it. I bought the car used in 11/07. Right after I bought the car, it started to have a problem with the car lugging and seemed to want to shift out of 3rd gear to OD - should have been pulling. We found several problems - upper intakes were melted, spark plugs fouled, wires unsure and fuel filter about 50% restricted. All were replaced - ran better but still had same problem w/trans. Rebuilt by trans shop - was better for about 2 mos - now engine idle fluctuates when cold, almost shuts off when pulling from a stop sign from time to time, and this trans problem - it seems like it is worse between 45MPH and 55MPH and it lugs hard sometimes. Did replace MAF yesterday - was the only code set and was a hard failure. Engine performance is much better but trans problem remains. This is a 4T60E - I don't think that there is a relearn after replacement or rebuild - possible internal electronic failure? This is driving me crazy - the car is in really nice shape (looks new in and out) but I cannot drive it like this. Any ideas?
have the same problem?
Tuesday, May 6th, 2008 AT 2:29 PM