Oil Pressure High

1. Vacuum line or fittings clogged or leaking.

2. Improper engine vacuum.

3. Vacuum leak in vacuum operated accessory. modulator.

4. Vacuum Modulator.

5. Modulator valve.

6. Water in modulator.

7. Pressure regulator.

8. Oil pump.

9. Governor.

10. Malfunction in detent downshift system. Check for shorted detent wiring, detent solenoid stuck open, detent feed orifice in spacer plate blocked or restricted, loose detent solenoid, damaged detent valve bore plug or detent regulator valve pin too short.