Inoperative System

If road test verifies an inoperative system and the speedometer works, check for loose electrical and vacuum connections at the servo.

Check for correct installation of the vacuum check valve in the hose from servo to vacuum source. The word VAC on the valve must point toward the vacuum source.

Corrosion should be removed from electrical terminals and a light coating of Mopar Multipurpose Grease, or equivalent, applied.

Inspection should also be made to verify that both ends of the speed control cable are securely attached. Check for:

• Blown fuse.
• No vacuum at servo.
• Speed control throttle cable disconnected.
• Improper stop lamp and speed control switch adjustment.
• Faulty electrical circuit.
• Defective servo.
• Defective vacuum reservoir.