Symptom Chart
WARNING: This page is about a different car, the 2010 Lincoln MKX and 2010 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
SYMPTOM CHART - POWER TRANSFER UNIT (PTU)
| Condition |
Possible Sources |
Action |
- The Power Transfer Unit (PTU) makes noise
|
- Tire inflation pressure
- Tire and wheel size
|
- MAKE SURE all tires and wheels are the same size and brand and the inflation pressures are correct.
|
|
|
|
|
|
- OPERATE the vehicle in all gears. If there is noise in the transaxle in NEUTRAL, or in some gears and not in others, REMOVE and REPAIR the transaxle. Refer to the appropriate Automatic Transmission article
for the procedure. If there is noise in all gears, INSTALL a new PTU
. REFER to POWER TRANSFER UNIT (PTU) .
|
- Leaking fluid from the PTU
vent
|
|
|
- Leaking automatic transmission fluid
|
- PTU
intermediate shaft seal
- PTU
compression seal
|
|
- Leaking gear lubricant from the seals
|
- The PTU
vent is plugged (located on top of the PTU
)
|
|
|
|
|
- Vehicle has no or inadequate torque at rear wheels
|
|
|
|
|
|
- Vehicle binds in a turn or resists turning/pulsates or shudders in a straight line
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|