1991 Pontiac Grand Am Problem Reports

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The spark plug wire rubber boots may get soaked with oil, causing a misfire or rough idle.

The ignition coil housing may fail causing an engine misfire on one or more cylinders.

The head light aim may be out of adjustment after replacing one of the head light bulbs, This can be caused by the head light assembly not being correctly installed after bulb replacement.

The engine vacuum hose to the MAP sensor may crack resulting in a vacuum leak causing the engine to run rough and/or stall.

The torque converter clutch can stick "on" after extended freeway driving causing the engine to stall when coming to a stop. Our technicians tell us when this occurs, the engine usually will restart and stall when put into gear. After allowing about twenty minutes for the engine and transmission to cool down, the engine will start and the transmission will operate normally. Replacing the torque converter clutch solenoid, transmission filter, and fluid will generally correct this issue.

Front brake rotors can wear causing a pulsation felt in the brake pedal. Our technicians tell us this condition is best corrected by replacement of the front rotors and brake pads.

The timing chain tensioner and guides are prone to wear and may develop an abnormal noise, requiring replacement.

The heater core under the right side of the dashboard may leak engine coolant which can puddle on the passenger front floor. The loss of coolant may cause an engine overheating condition. Our technicians tell us that removal of the dash board is necessary to replace the heater on these vehicles.

The fuel pump may fail causing engine to stall and not restart.

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.

The 2.3L 4 cylinder engine can be prone to head gasket failure. This can result in coolant loss and engine overheating.

The oxygen sensor can fail causing Check Engine Light illumination and the engine to run rich (burn more fuel than normal).

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.