Poor Acceleration; Stall Speed Low In R

Poor acceleration; stall speed low in R

Diagnostic Procedure:

1. Torque converter one-way clutch defective

2. Engine output low

3. Torque converter clutch piston defective

4. Lock-up shift valve defective

Also check for:

- Check the engine control system.
- Replace the torque converter assembly.
- Check the lock-up shift valve in the regulator valve body for free movement, and check the valve spring for wear and damage.