Engine Performance problem
2001 Jeep Cherokee 6 cyl Four Wheel Drive Automatic 54000 miles
my 4.0 starts fine but after it warms up it idles so rough that the exhaust rattles, also gas milage has gone way down. Engine lt. Says cyl. 3 missfire. I have changed the spark rail. Plugs, and checked injectors. Replaced fuel pump. I have not changed O2 sensors. The drive rod for the oil pump and camshaft position sensor was recently replaced by a shop, so I assume the timing is ok. I took the cat. Converter out and it is ok.
have the same problem?
Saturday, March 7th, 2009 AT 9:13 AM