Pontiac Bonneville Problems

Pontiac Bonneville automotive repair questions and the answers we gave. You may find some help with your similar problem. Stalling, battery problems, dash warning lights and all other problems. Ask a question.


Question: my heater blower in my 2000 bonneville se does not work at all i checked fuses and that's not problem, i just need to know how to get to the blower to replace it?

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2004 Pontiac Bonneville SE

Engine size = 3.8L V6.
Repairs: Front motor mount changed, all motor mounts were loosened and then tightened. Spark plugs have been changed, platinum plugs were put in.
Question = I have a vibration from my motor, I feel it mostly when I am stopped at a red light or stop sign. I can feel the vibration in the seats, the steering wheel, the brake pedal, right through the whole car. It's like I am in a big truck.

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I have a 1992 Bonneville SE with the 3800 engine in it. When it gets cold or damp outside it will not start. I have replaced the spark plugs and still the same problem. Did notice that when it was warmer out and the car started, if you tried to accelerate quickly the engine would buck and backfire. If you accelerated normally it would go fine.

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1997 Pontiac Bonneville 6 cylinder.

Question: Driving down the road the heater will be on blowing warm air, the display on the dash will start flashing and the air turns cold instantly. Thermostat was already changed. What could be causing this. Not leaking any fluid. Fluid level is good.

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Problem with my 1996 Pontiac Bonneville.

Checked fuses, relays.
The radio in my car will not come on when i start the car. When the radio isn't working, my power windows will not roll down.  The radio will come on intermittently and when the radio works, i can roll down the windows. 

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Stalls and Won't Restart

1994 Pontiac Bonneville, when I drive for long periods of time the engine will stall out. It will typically restart in about 15-20 minutes. Mechanics can''t figure it out.

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How Things Work

Charging System Components and Operation

On today's newer cars and trucks, the generator (ALternator) provides DC voltage to operate the vehicle's electrical system and to charge the battery. A magnetic field is created when current flows through the rotor windings. The rotor is belt driven by the engine creating an AC voltage as this field rotates within the stator windings.

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Common Engine Codes

Idle Air Control Valve Engine Light Codes

P0506 - P0507
The idle air control (IAC) valve is located in the throttle body of the SFI systems. The IAC consists of a movable pintle, driven by a gear attached to an electric motor called a stepper motor. The IAC valve motor is a two phase bi-polar permanent magnet stepper motor that is capable of highly accurate rotation, or movement, every time the polarity of a winding is changed.

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