1991 Oldsmobile 98 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1991 Oldsmobile 98
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1991 Oldsmobile 98 ProblemsEngine Control Module (ECM) can fail
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.
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 will commonly correct this concern.
1991 Oldsmobile 98 Questionsheater motor stays on when the engine is turned off (1 answer)
Stalls when driving then takes a while to crank!!!