Diagnostic Procedure
WARNING: This page is about a different car, the 2005 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.
TRANSMISSION NOISY WITH NO DTC'S PRESENT DIAGNOSTIC TEST REFERENCE
| TEST | ACTION | APPLICABILITY |
|---|---|---|
| 1 | Check and adjust the oil level per the Service Information before continuing. Place vehicle on hoist. Run vehicle on hoist under conditions necessary to duplicate the noise.
CAUTION:
BE SURE TO KEEP HANDS AND FEET CLEAR OF ROTATING WHEELS. Using Chassis Ears or other suitable device, verify that the noise is coming from the transmission. Is the noise coming from the transmission? Yes --> Go To 2 No --> Test Complete. |
All |
| 2 | With the shift lever in neutral, raise the engine speed and listen to the noise.
NOTE:
THE RADIO MUST BE TURNED OFF. Alternator noise can come through the speakers and be misinterpreted as Transmission Pump Whine. This can happen even with the volume turned down. Does the noise get louder or change pitch while the engine speed is changing? Yes --> Go To 3 No --> Go To 4 |
All |
| 3 | If there are no possible causes remaining, view repair. Repair Repair internal transmission problem as necessary. Inspect all of the transmission components for signs of wear. If no problems found, replace the Transmission Oil pump. Perform 42RLE (NGC) TRANSMISSION VERIFICATION TEST - VER 1 . |
All |
| 4 | If there are no possible causes remaining, view repair. Repair Repair internal transmission problem as necessary. Inspect all of the transmission components for signs of wear. Pay particular attention to bearings, pinion gears, etc. Repair or replace as necessary. Perform 42RLE (NGC) TRANSMISSION VERIFICATION TEST - VER 1 . |
All |