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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 579 (Rear Drive Axle/Differential - Ford 8.8" Ring Gear) >> Diagnosis And Testing >> Rear Drive Axle and Differential >> Diagnostic Routines >> Diagnostic Routine - Noise (Clunk) On Changes In Speed Or Direction Of Power

Diagnostic Routine - Noise (Clunk) On Changes In Speed Or Direction Of Power

WARNING: This page is about a different car, the 2004 Ford RV Cutaway, 2004 Ford Econoline, 2004 Ford E450 Super Duty, and 2004 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC ROUTINE - NOISE (CLUNK) ON CHANGES IN SPEED OR DIRECTION OF POWER

Possible Component Reference/Action
Axle and Pinion System Measure total backlash. If end play and total backlash are within specification, INSTALL a new differential case assembly.
Differential pinion shaft INSTALL a new differential pinion shaft and pin.
Pinion Bearings INSTALL new pinion and differential bearings and bearing cups.

DIAGNOSTIC ROUTINE - VIBRATION 

Fig 1: Vibration - Diagnostic Routine Chart
G02760786Courtesy of FORD MOTOR CO.
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