Problem Reports
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1992 Pontiac Grand Prix Problems
High Pressure Power Steering Hose Can Leak Fluid
The high pressure power steering hose will commonly leak fluid; it should be replaced.
Engine Stall Or No Start Condition
The fuel pump may fail causing engine to stall and not restart.
Engine Overheating Due to Water Pump Leak
The water pump may develop a coolant leak resulting in an engine overheating condition.
Rough and/or High Idle Due to Engine Vacuum Leak
The upper intake manifold gasket and/or a PCV vacuum lines/hoses can develop vacuum leaks with age. This type of leak can result in a higher that normal or rough idle.
Transmission Fluid Leak From Cooler Line
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.
Replace timing belt tensioner and idler pulleys when replacing timing belt
Rubbing noise due to bent rear suspension links
Oil Pump Drive O-Ring May Leak Oil
An engine oil leak may develop from the oil pump drive O-ring. This can often be confused with an intake manifold gasket leak. Careful inspection is required to determine the exact cause of the leak. Replacement of the failed 0-ring will commonly correct this concern.
Incorrect air flow from dash vents due to damaged engine vacuum hose
Car Won't Start Due to Ignition Module/Crankshaft Position Sensor Failure
The ignition module or crankshaft position sensor may fail causing the engine to die and not restart. Diagnoses will be necessary to determine if the module or crank sensor is causing the no start condition.
Stalling or Low Engine Idle Speed Due to Dirty Throttle Body
Body: A dirty throttle body may cause a lower than normal engine idle resulting in a stalling condition. A stalling condition may also result if an idle learn procedure is not performed if the battery goes dead or is disconnected.
Fuel injectors can short-circuit
Fuel injectors can short-circuit electrically causing a rougher than normal idle and reduced performance.
Erratic temperature gauge and warning light
The engine temperature sensor wire for the engine temperature gauge, or warning light, may touch the rear exhaust manifold causing a short to ground causing erratic operation of the temperature gauge or warning light.
Engine Control Module (ECM) can fail
The Engine Control Module (ECM) can fail causing stalling, and engine and transmission drivability concerns.
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