Noise and Vibration Analysis

A noise or vibration noticeable when the vehicle is in motion, may not be caused by the transmission. If a noise or vibration is noticeable in "PARK" and "NEUTRAL" with engine at idle, but is less noticeable as RPM increases, the cause may be poor engine performance.

Inspect
^ Tire and wheels for:
- Uneven wear.
- Imbalance.
- Mixed sizes.
- Stones or debris lodged in threads.
^ Suspension components for:
- Alignment and wear.
- Loose fasteners.
^ Engine and transmission mounts for:
- Damage.
- Loose bolts/screws.
^ Transmission case mounting holes for:
- Missing bolts/screws, nuts, studs.
- Stripped threads.
- Cracks.
^ Flywheel for:
- Missing or loose bolts/screws.
- Cracks.
- Imbalance.
^ Torque converter clutch for:
- Missing or loose bolts/screws or lugs.
- Missing or loose balance weights.