Sludge build up on the throttle plate and/or idle air control valve can cause a poor engine idle, stalling, and/or hesitation – especially when the engine is still cold. The correction is to install a new idle air control valve spacer kit to prevent the sludge build up.
Average mileage: 180,784 (160,000–201,569)
Engines affected: 5.8L V8, 7.3L V8 Diesel
4 people reported this problem