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Problems for specific Buick Regal years:

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Most reported 1991 Buick Regal problems

 

Verified for the Buick Regal

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

 

38 Reports
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Verified for the Buick Regal

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

31 Reports
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Verified for the Buick Regal

The mass air flow or crankshaft position sensor may fail causing the engine to intermittently stall. It may be necessary for the engine to cool down before it will restart.

25 Reports
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Verified for the Buick Regal

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

22 Reports
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Verified for the Buick Regal

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.

13 Reports
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Verified for the Buick Regal

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.

11 Reports
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Verified for the Buick Regal

The intake manifold gasket can develop external engine oil leaks. The intake manifold will need to be removed and the gaskets replaced to correct this issue.

11 Reports
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Verified for the Buick Regal

The cam sensor interrupter (magnet) may become demagnetized and/or fall off of the camshaft gear causing the Check Engine Light (Service Engine Soon) light to illuminate. On higher mileage vehicles it would be advisable to replace the timing chain and gears if this problem were to occur as the timing cover must be removed to replace the interrupter.

7 Reports
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Verified for the Buick Regal
Air flow from the dash vents may be incorrect due to a damaged engine vacuum hose near the battery tray.
7 Reports
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Verified for the Buick Regal

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

7 Reports
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Verified for the Buick Regal

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.

6 Reports
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Verified for the Buick Regal
One or more of the rear suspension links may become bent causing a severe rubbing noise.
6 Reports
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Verified for the Buick Regal

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»

5 Reports
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Verified for the Buick Regal

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.

5 Reports
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Verified for the Buick Regal

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

4 Reports
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