Automotive Technology/Diagnostics

Listen to driver concern and road test the vehicle, every time.

Vibration, Harshness, and Noise
Always begin at the tires look for uneven wear.

Vibration
Transmission and torque converter are not usual culprits for vibration. Check brakes, bearings, joints first.

When it is the culprit, usually it's an unbalanced/poorly mounted torque converter or faulty output shaft.

Noise
Should be directly connected to speed and conditions

Any condition with engine running points to the oil pump.

Noises based in a single gears relate to a band or clutch problem.