Diagnostic Aids
All manual transmissions have gear play that might cause a clunk. If the transmission is suspected of causing the clunk, compare it with a similar vehicle. An internal clunk in the transmission is usually caused by wear between 2 components, or from improper assembly, which would also cause other symptoms.
Step | Action | Yes | No | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
DEFINITION: A clunk is heard and/or felt on acceleration or deceleration. | |||||||||||
1 | Did you review the Symptoms - Manual Transmission and perform the necessary inspections? | Go to Step 2 | |||||||||
2 | Inspect the engine mounts for being loose or damaged. Refer to Engine Mount Inspection . Did you find and repair the condition? | Go to Step 7 | Go to Step 3 | ||||||||
3 | Inspect the transmission mounts for being loose or damaged. Refer to Propeller Shaft, Differential, and Driveline Support Replacement . Did you find and repair the condition? | Go to Step 7 | Go to Step 4 | ||||||||
4 | Inspect the transmission to engine fasteners for being loose or missing. Refer to Fastener Tightening Specifications . Did you find and repair the condition? | Go to Step 7 | Go to Step 5 | ||||||||
5 | Inspect the driveline for causing the clunk. Refer to Diagnostic Starting Point - Propeller Shaft . Did you find and repair the condition? | Go to Step 7 | Go to Step 6 | ||||||||
6 |
Did you find and repair the condition? | Go to Step 7 | Go to Diagnostic Aids | ||||||||
7 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 1 | ||||||||
