Rick's Free Auto Repair Advice

Screeching noise Ford

Screeching noise Ford

High pitched Screeching noise Ford, screech, hoot, whistle on Ford Mustang, Expedition, Explorer Sport Trac, Explorer, F-150, Lincoln Mark LT, Navigator, Mercury Mountaineer

Ford has issued a technical service bulletin (TSB) 09-9-7 to address a noise that occurs in these vehicle when equipped with the 4.6L and 5.4L engines. The noise appears as a hoot or whistle or a high pitched metallic screech after sitting in cold weather below 40 degrees. The noise is probably coming from the grooved nylon front end accessory drive (FEAD) idler pulley. idler pulley, grooved idler pulley, idler pulley for 4.6L and 5.4L Ford engineThe noise usually goes away after 10-mins of driving. Ford has released a revised idle pulley #6L3Z-6C348-A.

The TSB applies to:

2007-09 Ford Mustang, Expedition, Explorer Sport Trac, Explorer, F-150
2007-08 Lincoln Mark LT, Navigator
2007-08 Mercury Mountaineer


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Posted on by Rick Muscoplat

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