Symptom Chart - NVH: Knock

WARNING: This page is about a different car, the 2012 Ford Pickup, 2012 Ford F550 Super Duty, 2012 Ford F450 Super Duty, and 2012 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

Knock, which can occur on all driving phases, has several causes including damaged teeth or gearset.

Fig 1: Locating Knock On Differential Ring Gear And Pinion

Courtesy of FORD MOTOR CO.

A gear tooth damaged on the drive side is a common cause of the knock. This can usually be corrected by grinding the damaged area.

Fig 2: Locating Knock On Differential Ring Gear And Pinion

Courtesy of FORD MOTOR CO.