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Pontiac » Bonneville » 1999 Pontiac Bonneville » Car Problems

Problems for specific Pontiac Bonneville years:

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1999 Pontiac Bonneville Problems

Intake Manifold Gaskets Can Develop Engine Oil Leaks

for the Pontiac Bonneville

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 intake manifold my be damaged requiring replacement.

43 Reports

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Engine Stalling Due to Mass Air Flow/Crankshift Position Sensor Failure

for the Pontiac Bonneville

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.

33 Reports

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Engine Overheating Due to Water Pump Leak

for the Pontiac Bonneville

The water pump may develop a coolant leak resulting in an engine overheating condition.

27 Reports

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HVAC Mode/Temperature Door Actuators May Fail

for the Pontiac Bonneville

The mode and temperature door actuators may fail causing improper air flow or temperature output from the heating and AC (HVAC) system.

21 Reports

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Erratic Shifting of the Automatic Transmission

for the Pontiac Bonneville

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 control solenoid.

19 Reports

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High Pressure Power Steering Hose Can Leak Fluid

for the Pontiac Bonneville

The high pressure power steering hose will commonly leak fluid; it should be replaced.

18 Reports

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The Fuel Pump May Fail Causing the Engine to Stall or Crank Over But Not Start

for the Pontiac Bonneville

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.

18 Reports

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Transmission Fluid Leak From Cooler Line

for the Pontiac Bonneville

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 replaced to correct this concern.

17 Reports

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Check Engine Light Due to Gas Cap Issue

for the Pontiac Bonneville

Illumination of the Check Engine Light can be caused by a loose or worn gas cap.

13 Reports

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Loss of power steering fluid from steering rack failure

for the Pontiac Bonneville

The steering rack may fail causing a loss of power steering fluid as a result the steering may become hard to turn.

12 Reports

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Car Won't Start and Security Light is On

for the Pontiac Bonneville

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 ignition lock cylinder must be replaced to correct this condition.

12 Reports

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Wear In Outer Tie Rod Ends Can Cause Steering Problems

for the Pontiac Bonneville

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 checked and adjusted as necessary.

11 Reports

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