'99 Yukon 5.7 After doing all the obvious tune up stuff, TPS and Crank sensors the light throttle misfire was caused by the distributor. Symptom was a light throttle cruise miss at 1500 rpm, idle smooth and WFO ran like a champ. Miss triggered P0300, P0307 codes and a #2 cylinder miss history. New distributor was the cure.
- posted
16 years ago