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: 150,000 (150,000–150,000)
Engine affected: 4.6L V8
3 people reported this problem