Engine Idle Vibration

Engine idle vibration

Diagnostic Procedure:

1. Low ATF level

2. Shift solenoid valve D defective

3. Drive plate defective or transmission mis-assembled

4. Engine output low

5. Torque converter clutch piston defective

6. ATF pump worn or binding

7. Lock-up shift valve defective

Also check for:

- Adjust the engine and transmission mounts.
- Check the ATF level and check the ATF cooler lines for leakage and loose connections. If necessary, clean the ATF cooler lines.
- Check for a stored DTC, and check for loose connectors. Inspect the O-ring, and check for a seized shift solenoid valve.
- Replace the torque converter.
- Improper alignment of the ATF pump and the torque converter housing may cause the ATF pump seizure. The symptom is mostly an rpm-related ticking noise or a high pitched squeak.