1990 Buick Regal Problems

RepairPal has identified the most common problems with the 1990 Buick Regal as reported by actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.

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24
Known Problems

One or more of the power windows may stop working due to a failed window switch. Failed switches will require replacement.

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

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.

Fuel injectors can short-circuit electrically causing a rougher than normal idle and reduced performance.

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.

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

 

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

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

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 completely flushed.

The spark plugs should be replaced every 30,000 miles and the spark plug boots should be checked for hot spots and cracks.

A stalling issue may occur if the battery goes dead or is disconnected and the "idle learn" procedure is not performed. For more information on "relearning" the engine idle speed, please click here»

One or more power windows may stop working due to a failed window motor or switch. Proper diagnoses will be necessary to determine the exact cause.

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.

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