I have a 1998 Jeep Cherokee Limited with the 4.0 engine and four wheel drive with 165000 miles. It recently started running rough at idle and went from 16 mpg to 9 mpg. The car runs fine otherwise acceleration and power seems ok. The CEL codes that popped up were a lean code and a high amp code for a sensor.
I thought maybe the injectors were dirty so I put Lucas oil injector cleaner in. The car smoothed out and the mileage went back up for three quarters of the tank after the fill up. It started to go back to running rough and poor mileage with a quarter of a tank left. Any ideas?
have the same problem?
Saturday, March 5th, 2011 AT 3:15 AM