Operation CHARM: Car repair manuals for everyone.

Slips 1-2 Shift

1. Aerated oil due to low level.

2. 2nd speed feed orifice in spacer plate partially blocked.

3. Improperly installed or missing spacer plate gasket.

4. 1-2 accumulator valve stuck, causing low 1-2 accumulator pressure.

5. Weak or missing 1-2 accumulator valve spring.

6. 1-2 accumulator piston seal leaking or spring missing or broken.

7. Leakage between 1-2 accumulator piston and pin.

8. Incorrect intermediate band apply pin.

9. Excessive leakage between intermediate band apply pin and case.

10. Porous intermediate servo piston.

11. Servo cover to servo seal damaged or missing.

12. Incorrect servo and cover.

13. Throttle valve cable improperly adjusted.

14. Shift throttle valve or throttle valve binding.

15. Intermediate band worn or burned.

16. Case porosity in 2nd clutch passages.