Pinpoint Test Ac: The Transfer Case Makes Noise
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
- Normal Operation and Fault Conditions
- VERIFY all tire inflation pressures are correct.
- VERIFY all tires and wheels are the same.
- CHECK tire tread wear to see if there is more than in (1.6 mm) difference in tread wear between front and rear. INTERCHANGE one front wheel and one rear wheel. ROAD TEST again.
- OPERATE the vehicle in all transmission gears. If there is noise in the transmission in NEUTRAL, or in some gears and not in others, REMOVE and REPAIR the transmission.
- CHECK the planetary gears, the bearings, the upper and lower drive sprockets and drive chain for damage. INSTALL new parts as necessary,
REFER to: Transfer Case (307-07 Transfer Case, Diagnosis and Testing).
- CHECK that the transfer case is filled to the correct level and with the specified fluid. REFER to: Transfer Case Draining and Filling .
Possible Sources
- Tire inflation pressure
- Tire and wheel size
- Tire tread wear
- Internal components of the transfer case
- Fluid level
- VERIFY all tire inflation pressures are correct.
Diagnostic steps are not provided for this symptom or DTC. REFER to: Diagnostic Methods