Slips In 1, 2 or Drive

1. Low hydraulic pressure.
2. Defective or leaking valve body.
3. Low fluid level.
4. Incorrect gearshift linkage adjustment.
5. Clogged transmission oil filter.
6. Faulty oil pump.
7. Worn or damaged input shaft seal rings.
8. Aerated fluid.
9. Incorrect throttle linkage adjustment.
10. Overrunning clutch not holding.
11. Worn or faulty rear clutch.
12. Overrunning clutch worn, damaged or seized.