1988 Oldsmobile 98 Service and Repair Manual

This factory service and repair manual for the 1988 Oldsmobile 98 applies to the 4-door sedan, the only body style listed, in Regency, Regency Brougham and Regency Touring trims. The engine is a 3.8L V6 displacing 231 cubic inches, fueled by gasoline, naturally aspirated and designed with overhead valves. It is the one engine offered on the car this year.

Engines covered

• 3.8L V6 (231 cu in) — OHV, naturally aspirated, gasoline

Body styles covered

• 4-door sedan

Trims covered

• Regency
• Regency Brougham
• Regency Touring

Known issues on the 1988 98. The 1988 98 has 1 recall on record, covering certain vehicles, 430 in total. A clip in the console shifter mechanism could come loose, so the gear indicator could not show the correct selection in the dark, and the clip could also jam the shifter so the detents would not work and the car could end up in an unintended gear; a replacement clip was installed. Owners reported 10 complaints, steering leading with 4 and hydraulic brakes next at 3. The manual includes procedures, specifications and diagnostics for the transmission shifter mechanism, steering and brakes.