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1998 Pontiac Bonneville Problems

Find the most common issues based on 1998 Pontiac Bonneville owner complaints.
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Most Common 1998 Pontiac Bonneville Problems

The mass air flow or crankshaft position sensor may fail causing the engine to stall intermittently. Proper diagnoses will be necessary to determine the cause of any stalling condition.
The mode and temperature door actuators may fail causing improper air flow or temperature output from the heating and AC (HVAC) system.
The intake manifold gaskets can develop external engine oil or coolant leaks. The intake manifold will need to be removed and the gaskets replaced to correct this issue. In some cases the plastic i...
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2 Known 1998 Pontiac Bonneville Brakes Problems

The ABS brake pressure modulator valve can fail internally causing the ABS light to illuminate.
The anti-lock brake (ABS) accumulator may fail causing loss of power brake assist. (The brake pedal will become very hard.)

3 Known 1998 Pontiac Bonneville Drive Train Problems

The transmission pressure control solenoid may fail causing erratic shifting. Our technicians tell us that partial dis-assembly of the transmission is necessary to replace a failed pressure contr...
The rubber section of an automatic transmission cooler line may develop a fluid leak . In some cases the leaking section of hose can be replaced. In others, the complete cooler line must be r...
You may be able to prevent transmission problems by servicing the transmission and inspecting the fluid every 30,000 miles. If the fluid is dark or burned then the transmission system should be com...

0 Known 1998 Pontiac Bonneville Electrical & Lights Problems

5 Known 1998 Pontiac Bonneville Engine Problems

The mass air flow or crankshaft position sensor may fail causing the engine to stall intermittently. Proper diagnoses will be necessary to determine the cause of any stalling condition.
The intake manifold gaskets can develop external engine oil or coolant leaks. The intake manifold will need to be removed and the gaskets replaced to correct this issue. In some cases the plastic i...
The water pump may develop a coolant leak resulting in an engine overheating condition.

3 Known 1998 Pontiac Bonneville Exhaust & Emissions Problems

Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
The EGR tube may develop an engine vacuum leak causing the engine to run lean. The Check Engine Light may or may not illuminate.
Failure of the crankshaft position sensor, ignition control module, or powertrain control module (PCM) may cause the Check Engine Light to illuminate.

2 Known 1998 Pontiac Bonneville Heating & Air Conditioning Problems

The mode and temperature door actuators may fail causing improper air flow or temperature output from the heating and AC (HVAC) system.
Extended life coolant may become contaminated and require cooling system service before the recommended 100,000 miles.

1 Known 1998 Pontiac Bonneville Maintenance Problem

Brake fluid can become dirty and may cause problems in the brake system; it should be flushed every 60,000 miles.

1 Known 1998 Pontiac Bonneville Miscellaneous Problem

Problems with the anti-theft systems using the raised-chip key can prevent the car from starting. The wires in the steering column to the ignition lock cylinder tend to break. The the key and ignit...

4 Known 1998 Pontiac Bonneville Suspension & Steering Problems

The high pressure power steering hose will commonly leak fluid; it should be replaced.
The front struts may show signs of wear, or be excessively bouncy ride at freeway speeds. This may begin to occur at around 75,000 miles.
The steering rack may fail causing a loss of power steering fluid as a result the steering may become hard to turn.

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Known 1998 Pontiac Bonneville Problems & Complaints

The mass air flow or crankshaft position sensor may fail causing the engine to stall intermittently. Proper diagnoses will be necessary to determine the cause of any stalling condition.
The transmission pressure control solenoid may fail causing erratic shifting. Our technicians tell us that partial dis-assembly of the transmission is necessary to replace a failed pressure contr...
The water pump may develop a coolant leak resulting in an engine overheating condition.
The mode and temperature door actuators may fail causing improper air flow or temperature output from the heating and AC (HVAC) system.
Problems with the anti-theft systems using the raised-chip key can prevent the car from starting. The wires in the steering column to the ignition lock cylinder tend to break. The the key and ignit...
Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
The anti-lock brake (ABS) accumulator may fail causing loss of power brake assist. (The brake pedal will become very hard.)
The outer tie rod ends on the steering linkage may wear causing excessive free play in the steering and uneven tire wear. If the worn tie rod ends are replaced, the wheel alignment should be chec...
The front struts may show signs of wear, or be excessively bouncy ride at freeway speeds. This may begin to occur at around 75,000 miles.
Failure of the crankshaft position sensor, ignition control module, or powertrain control module (PCM) may cause the Check Engine Light to illuminate.
The EGR tube may develop an engine vacuum leak causing the engine to run lean. The Check Engine Light may or may not illuminate.
The rubber section of an automatic transmission cooler line may develop a fluid leak . In some cases the leaking section of hose can be replaced. In others, the complete cooler line must be r...
The fuel pump can fail causing the engine to stall and not restart. Our technicians highly recommend to replace your fuel filter every 30,000 miles to help prevent undue strain on the fuel pump.
You may be able to prevent transmission problems by servicing the transmission and inspecting the fluid every 30,000 miles. If the fluid is dark or burned then the transmission system should be com...
The high pressure power steering hose will commonly leak fluid; it should be replaced.
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