Engine Idle Vibration

Engine idle vibration

Diagnostic Procedure:

1. Low ATF level

2. Shift solenoid valve E defective

3. Drive plate defective or transmission misassembled

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:

- Check the ATF level, and check the ATF cooler lines for leaks and loose connections. If necessary, clean the ATF cooler lines.
- Improper alignment of ATF pump and torque converter housing may cause ATF pump seizure. The symptoms are mostly an rpm-related ticking noise or a high pitched squeak.
- Inspect the ATF strainer for clogging with particles of steel or aluminum. If the ATF strainer is clogged, replace it, and clean the torque converter, cooler, and lines.
- Check for a stored DTC, and check for loose connectors.
- Inspect shift solenoid valve E for seizure, and the O-rings for wear and damage.
- Check for a misinstalled/damaged drive plate.
- Check that the idle rpm in gear is the specified idle speed Testing and Inspection.
- Replace the torque converter.
- Check the lock-up shift valve in the regulator valve body for free movement, and check the lock-up shift valve spring for wear and damage.