Rough Running Engine Due to Vacuum Leak on Pontiac Sunfire

Problem Description and Possible Solution

The engine vacuum hose to the MAP sensor may crack resulting in a vacuum leak causing the engine to run rough and/or stall.

Problem Data
RepairPal Verified
Average mileage: 137,333 (80,000–190,000)
Engines affected: 2.2L 4 Cylinder, 2.3L 4 Cylinder, 2.4L 4 Cylinder
5 model years affected: 1995, 1999, 2001, 2002, more2003
6 people reported this problem