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- NOISE - "MOANING" FROM FRONT DIFFERENTIAL WHILE IN 2-WHEEL DRIVE - VEHICLES BUILT THROUGH 4/15/1999
- AXLE - "MOANING" NOISE FROM FRONT DIFFERENTIAL WHILE IN 2-WHEEL DRIVE - VEHICLES BUILT THROUGH 4/15/1999
| Publication Date: JUNE 29, 1999 |
| 1997-1999 EXPEDITION, F-150, F-250 LD |
| 1998-1999 NAVIGATOR |
Some 4X4 vehicles built with center disconnect front axles may exhibit a "moaning" noise from the front differential while operating in 4X2 mode. The noise goes away when operating in 4X4 mode. This may be caused by the front differential side gears.
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