Diagnostic Aids
The manual transmission can be noisy for a number of reason, from being noisy in neutral, low, high and reverse gear. Diagnosis the transmission from the level of fluid to the right type of fluid in the transmission. Inspect for misalignment or loose bolts to the engine. The transmission could be noisy internally from the gears, synchronizers, bearings this should be inspected for worn or damaged parts. These are only a few areas that may cause the transmission to be noisy, you should inspect all possibilities that could lead you to the noise of these concerns.
Test Description
The number(s) below refer to the step number(s) on the diagnostic table.
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This step is checking for the correct fluid level.
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This step is checking for the correct type of transmission fluid.
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This step is checking for internal damage or worn parts.
Step | Action | Yes | No | ||||||
|---|---|---|---|---|---|---|---|---|---|
DEFINITION: The transmission is noisy and the noise carries into the passenger compartment. | |||||||||
1 | Did you review the manual transmission symptom operations and perform the necessary inspections? | Go to Step 2 | |||||||
Inspect the transmission fluid level. Is the fluid level correct? | Go to Step 4 | ||||||||
3 | Add transmission fluid. Refer to Fluid Replacement . Did you find and repair the condition? | System OK | Go to Step 4 | ||||||
Inspect the transmission for the correct fluid type. Is the transmission fluid the correct type? | Go to Step 6 | Go to Step 5 | |||||||
5 | Drain and refill the transmission with the correct type fluid. Refer to Fluid Replacement . Did you find and repair the condition? | System OK | Go to Step 6 | ||||||
6 | Inspect the shift control closeout boot. Is the closeout boot loose or damaged? | Go to Step 7 | Go to Step 8 | ||||||
7 | Position and tighten the shift tower to specification, or replace the boot as necessary. Refer to Shift Tower Replacement . Did you find and repair the condition? | System OK | Go to Step 8 | ||||||
8 | Inspect the clutch housing for loose bolts and/or misalignment with the engine. Is there any loose bolts or misalignment with the engine? | Go to Step 9 | Go to Step 10 | ||||||
9 | Tighten the clutch housing bolts to specifications. Refer to Fastener Tightening Specifications in Clutch. Did you find and repair the condition? | System OK | Go to Step 10 | ||||||
Is there any wear or damage? | Go to Step 11 | System OK | |||||||
11 |
Did you find and repair the condition? | Go to Step 12 | Go to Diagnostic Aids | ||||||
12 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 1 | ||||||
