Operation CHARM: Car repair manuals for everyone.

4 Speed Automatic

1. Engine performance.
2. Worn or faulty underdrive clutch.
3. Worn or faulty overdrive clutch.
4. Worn or faulty low/reverse clutch.
5. Worn or faulty 2-4 clutch.
6 Incorrect gearshift control linkage adjustment.
7. Worn or broken reaction shaft support seal rings.
8. Valve body malfunction or leaking.
9. Hydraulic pressures too low.
10. Faulty oil pump.
11. Clogged oil filter.
12. Low fluid level.
13. Aerated fluid.