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1990 Pontiac Bonneville Problems

Find the most common issues based on 1990 Pontiac Bonneville owner complaints.
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Most Common 1990 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 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...
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...
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2 Known 1990 Pontiac Bonneville Brakes Problems

The ABS master cylinder assembly may 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.)

2 Known 1990 Pontiac Bonneville Drive Train Problems

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...

2 Known 1990 Pontiac Bonneville Electrical & Lights Problems

A door window may move slowly or stop in mid travel due to a failing power window motor. The affected window may start working again after the motor cools off. Replacing the faulty window motor...
If the ABS light on the instrument panel illuminates, our technicians recommend checking the brake lamps first. It could indicate that a brake light is not working or has burned out.

6 Known 1990 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.

1 Known 1990 Pontiac Bonneville Exhaust & Emissions Problem

The Engine Control Module (ECM) can fail causing stalling, and engine and transmission drivability concerns.

1 Known 1990 Pontiac Bonneville Heating & Air Conditioning Problem

Our technicians highly recommend that the engine coolant be replaced every 30,000 miles.

1 Known 1990 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 1990 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 1990 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.

20
Known 1990 Pontiac Bonneville Problems & Complaints

The steering rack may fail causing a loss of power steering fluid as a result the steering may become hard to turn.
The spark plugs should be replaced every 30,000 miles and the spark plug boots should be checked for hot spots and cracks.
The ABS master cylinder assembly may fail internally causing the ABS light to illuminate.
If the ABS light on the instrument panel illuminates, our technicians recommend checking the brake lamps first. It could indicate that a brake light is not working or has burned out.
Brake fluid can become dirty and may cause problems in the brake system; it should be flushed every 60,000 miles.
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