Engine was idling high but running OK at high speed, gas mileage in town was suffering so I suspected dirty fuel injectors. I used Chevron Techron cleaner before leaving on a 500 mile trip. After using the Techron I noticed that the RPM was not steady, even using cruise control, then check engine light came on. Trouble codes are P0202, P0204, P0207 and P0208 Injector circuit open in cylinders 2, 4, 7 and 8. Jeep dealer told me it could be EGR valve, idle control motor, Throttle Position Sensor, Fuel Filter or dirty injectors and want to charge $150 to diagnose. Where would you suggest I begin?
Sep 22, 2008 at 9:50 PM
