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1991 Oldsmobile 98 Problems

Find the most common issues based on 1991 Oldsmobile 98 owner complaints.
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Most Common 1991 Oldsmobile 98 Problems

Problems with 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 key and ignition loc...
The Engine Control Module (ECM) can fail causing stalling, and engine and transmission drivability concerns.
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...
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2 Known 1991 Oldsmobile 98 Brakes Problems

The ABS accumulator may fail causing loss of power brake assist. (The brake pedal will become very hard).
The ABS master cylinder assembly may fail internally causing the ABS light to illuminate.

2 Known 1991 Oldsmobile 98 Drive Train Problems

An automatic transmission fluid leak may develop from the rubber section of a transmission cooler line. In some cases the rubber section of hose can be replaced. In others, the complete cooler ...
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 com...

2 Known 1991 Oldsmobile 98 Electrical & Lights Problems

A door window may move slowly or stop in mid travel due to a failing power window motor. The affected window may start working again after the motor cools off. Replacing the faulty window motor...
If the ABS light on the instrument panel illuminates, our technicians recommend checking the brake lamps first. It could indicate that a brake light is not working or has burned out.

6 Known 1991 Oldsmobile 98 Engine Problems

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...
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 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.

1 Known 1991 Oldsmobile 98 Exhaust & Emissions Problem

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

1 Known 1991 Oldsmobile 98 Heating & Air Conditioning Problem

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

1 Known 1991 Oldsmobile 98 Maintenance Problem

Brake fluid can become dirty and may cause problems in the brake system; it should be flushed every 60,000 miles.

1 Known 1991 Oldsmobile 98 Miscellaneous Problem

Problems with 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 key and ignition loc...

4 Known 1991 Oldsmobile 98 Suspension & Steering Problems

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.
The high pressure power steering hose will commonly leak fluid; it should be replaced.
The steering rack may fail causing a loss of power steering fluid as a result the steering may become hard to turn.

20
Known 1991 Oldsmobile 98 Problems & Complaints

The steering rack may fail causing a loss of power steering fluid as a result the steering may become hard to turn.
The spark plugs should be replaced every 30,000 miles and the spark plug boots should be checked for hot spots and cracks.
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 ABS master cylinder assembly may fail internally causing the ABS light to illuminate.
If the ABS light on the instrument panel illuminates, our technicians recommend checking the brake lamps first. It could indicate that a brake light is not working or has burned out.
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