Rough and/or High Idle Due to Engine Vacuum Leak on Oldsmobile Cutlass Supreme

Problem Description and Possible Solution

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.

Problem Data
RepairPal Verified
Average mileage: 166,167 (117,000–211,678)
Engines affected: 3.1L V6, 3.4L V6
7 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1996
22 people reported this problem
Viewing 1 - 5 of 5 problem details
idls very low . when put in drive or rev. engine cuts off. i have to two foot drive so it doesn't cut off at red lights.
erratic idle, loping
problem; overheating, power streing leaks and radiator will not hold water
Runs real rough wen u give it gas n dies
engine began to idle at about 2000-2500 rpms