1991 Oldsmobile 98 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1991 Oldsmobile 98

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 lock cylinder should be replaced to correct this condition.

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.

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

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1991 Oldsmobile 98 Questions

Stalls when driving then takes a while to crank!!!

I'm having starting issues. Cranks but does not turn over. I have spark. Alternator checked out ok. Fuses I found checked out ok too. Want to start looking into fuel issues. Books i have are very vague about relays.
Thanks.

computer says clean key

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1991 Oldsmobile 98 Recalls

THE CONSOLE MOUNTED SHIFT LEVER MAY DISENGAGE FROM THE SHIFT CONTROL CABLE BRACKET CAUSING LOSS OF GEAR INDICATOR REFERENCE AND SHIFT SELECTOR OPERATION.WHEN APPLIED, THE PARKING BRAKE LEVER ASSEMBLY MAY RELEASE ONE OR MORE TEETH, REDUCING THE CABLE LOAD TO THE REAR BRAKES.

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1991 Oldsmobile 98 Reviews

I have no clue how many miles the car has because the entire digital dash quit working. The air-conditioning doesn't work either and a ton of other things. Now, I've been told the head gasket is starting to go which will cost more to fix than the car is worth! On the up side it is a comfy car with lots of leg room and head room. It drives smooth and it's a pretty quiet car. When it shifts it do...

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