Runaway Upshift

1. Hydraulic pressure too low.
2. Valve body malfunction or leakage.
3. Low fluid level.
4. Clogged oil filter.
5. Aerated fluid.
6. Incorrect throttle linkage adjustment.
7. Worn or broken reaction shaft support seal rings.
8. Kickdown servo band or linkage malfunction.
9. Worn or faulty front clutch.