Mark LT 2WD V8-5.4L VIN 5 (2007)
Manual Transmission/Transaxle: Initial Inspection and Diagnostic Overview
Preinspection
Inspection and Verification
To guarantee an accurate diagnosis:
^
get an accurate description of the condition.
^
identify when the condition occurs; when hot or cold, during shifting, driving at a particular speed or in a particular gear.
^
have the customer demonstrate the concern, if possible.
^
GO to Symptom Chart - Transmission Clutch and Operation for additional source information and suggested test procedures. See: Clutch/Testing
and Inspection/Symptom Related Diagnostic Procedures
^
carry out the Noise Evaluation procedures, as necessary. See: Clutch/Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnosis
Strategies
Diagnosis Strategies
Noise Evaluation
NOTE: Carry out this evaluation with the transmission cold and at normal operating temperature to listen for any change in noise as the transmission
warms up.
1. Start the engine.
2. Evaluate the noise in NEUTRAL while the vehicle is parked.
3. Listen for any change in noise while depressing and releasing the clutch pedal.
4. Listen for any change in noise while changing the engine rpm.
5. Drive the vehicle and shift through all of the gear ranges, including reverse. Listen for any change in noise in a particular gear.
6. Drive the vehicle in the gear in which the noise is most noticeable. Depress the clutch pedal and leave the gear engaged. Listen for any change in
noise. The vibration of the engine may be amplifying the noise.
7. Drive the vehicle under the same conditions identified in the previous step. Depress the clutch pedal and shift the transmission into NEUTRAL.
Release the clutch pedal and allow the vehicle to coast. Evaluate the noise as the rear axle assembly turns the mainshaft.
