Engine Performance problem
2001 Jeep Cherokee 6 cyl Four Wheel Drive Automatic 98000 miles
My jeep runs good until warm and is shut off. Upon restart it starts idling rough. My gas mileage went from 20 mpg to 15 mpg. It had a recent tune up and the check engine light said cyl 3 misfire, so I changed the injector, didnt fix the issue. Ever since the gas mileage went down the rpm's are 300 higher at 55 miles an hour. Any thoughts would be appreciated, o2 sensors havent been replaced and catalytic converter is stock. Thanks
have the same problem?
Wednesday, February 25th, 2009 AT 5:33 PM