I have a 89Pontiac Bonneville 3800 76,400 miles started sputtering until get to 50mph then jerks what could be going on

I have a 89Pontiac Bonneville 3800 76,400 miles started sputtering until get to 50mph then jerks what could be going on 3 Answers

I have a 199 Pontiac Bonniville with 3800 series II engine.I had crankshaft sensor replaced as well as the serpentine belt. Now it turns over but won,t start. It;s getting fuel.Has new ignition module, all three coils packs are new, as well as MAF MAP,battery,plugs and wires. what could be cause of this? 3 Answers

Car is a 1996 Pontiac Bonniville. 3800 series II engine.All of the following have been replaced recently.Battery,radiator,fuel filter,MAF,MAP,idle solinoid,plugs,wires,thermosta... cap,crankshaft po...

What would cause my L67 3800 to have a cloud of exhaust fume even when it is 80 degrees out? Could this be where the majority of my gas mileage is going? 1 Answer

2002 Bonneville SSEi series II L67. There seems to be a lot of carbon residue building around my exhaust on the bumper. Right now, with the foot out of the pedal it is only getting 21.5 mpg.

Pontiac Bonneville runs bad then dies 1 Answer

My Bonneville will start and run like a top for a short time then will bog down, chug and die. If i try to start it after it dies, i have to pump the gas to keep it going and it runs really bad whe...

i have a 1994 pontiac bonneville, i turned the heat on and nothing happened. i replaced the blower motor, which it now blows out air,but only cold air. any thoughts on what my problem may be. 6 Answers

i also replaced the thermostat. i noticed a small crack on the top of the radiator, can this be the reason why i have no heat