A defective idler pulley and / or belt material can cause a chirp or squeak noise from the engine area on initial start up. The idler pulley and / or belt will need to be replaced with revised parts.
Average mileage: 86,153 (22,000–237,000)
Engines affected: 5.4L V8, 6.0L V8 Diesel Turbo, 6.4L V8 Diesel Turbo, 6.8L V10, 7.3L V8 Diesel Turbo
18 people reported this problem