Low fluid level

Add fluid.

Throttle valve cable out of adjustment, binding or damaged

Adjust or replace the throttle valve cable.

Throttle valve binding or sticking

Inspect the valve body.

2-3 shift valve binding or sticking

Inspect the valve body.

Primary regulator valve binding or sticking

Inspect the valve body.

Intermediate servo piston binding or sticking

Inspect the intermediate servo seals.

Intermediate servo piston rod not engaged

Inspect the intermediate servo piston.

2nd brake band not releasing

Inspect the 2nd brake band.

Torque converter internal damage

Replace the torque converter.

Direct clutch discs are worn

Replace the direct clutch discs.

Direct clutch piston or seal is leaking or damaged

Inspect the direct clutch piston and seal.

Incorrect fluid pressure

Perform the line pressure diagnosis.