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.
Resources for the Repair and Maintenance of your 1991 Oldsmobile Cutlass Supreme
1991 Oldsmobile Cutlass Supreme
1991 Oldsmobile Cutlass Supreme Problems
The high pressure power steering hose will commonly leak fluid; it should be replaced.
The water pump may develop a coolant leak resulting in an engine overheating condition.
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.
The fuel pump may fail causing engine to stall and not restart.
1991 Oldsmobile Cutlass Supreme Recalls (Recent)
Summary: VEHICLE DESCRIPTION: PASSENGER VEHICLES ORIGINALLY SOLD OR CURRENTLY REGISTERED IN THE STATES OF CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, IOWA, MAINE, MARYLAND, MASSACHUSETTS, MICHIGAN, MINNESOTA, MISSOURI, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, WEST VIRGINIA, WISCONSIN, AND THE DISTRICT OF COLUMBIA, WHERE ROAD SALT USE IS HEAVY. A CONDITION WHERE ONE OR BOTH FRONT ENGINE CRADLE BOLTS CAN PULL THROUGH THE RETAINERS DUE TO CORROSION OF THE RETAINERS.Learn more »
1991 Oldsmobile Cutlass Supreme Questions and Answers
my high beams work but low beam doesnt replaced all bulbs and checked fuses under dash.
The Low coolant warning light flashes when i use the air conditioner or if ive run the car for a while. Problem is the tank is full. Whats wrong?
how do i get the return line off the vehicle. i can't seem to find a way to get it over the front crossmember. it's alot of line in a tight space.
Where is the low pressure A/C service port on a 3.1L?