A noise or vibration that is noticeable when the vehicle is in motion MAY NOT be the result of the transmission. Refer to the
Diagnostic Starting Point - Vehicle procedure.
If noise or vibration is noticeable in PARK and NEUTRAL with the engine at idle, but is less noticeable as RPM increases, the vibration may be a result of poor engine performance.
| • | Vibration may also be caused by a small amount of water inside the converter. |
| • | Inspect the engine and transmission mounts for damage and loose bolts. |
| • | Inspect the transmission case mounting holes for the following conditions: |
| - | Missing bolts, nuts, and studs |
| • | Inspect the flywheel for the following conditions: |
| • | Inspect the torque converter for the following conditions: |
| - | Missing or loose bolts or lugs |
| - | Missing or loose balance weights |
| - | Imbalance caused by heat distortion or fluid contamination |
| • | If the noise or vibration is noticeable in PARK and NEUTRAL with the engine at idle, but is more noticeable as RPM increases, the vibration may be an engine imbalance or a transmission imbalance. Refer to
Torque Converter Diagnosis. |
