Operation CHARM: Car repair manuals for everyone.
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Engine Runaway or Slip When Starting Vehicle

ENGINE RUNAWAY OR SLIP WHEN STARTING VEHICLE
1. Defective inhibitor switch.
2. Fluid level too low or fluid contaminated.
3. Malfunctioning control valve(s).
4. Defective oil pump.
5. Defective forward clutch.
6. Defective one-way clutch No. 1.