LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Volvo >> 1982 >> 264 >> Repair and Diagnosis >> Electrical >> Body Electrical >> Cruise Control Systems >> Testing >> Component Tests >> Vacuum Motor
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Vacuum Motor

  1. Turn ignition off. Disconnect wiring and vacuum lines at throttle actuator. Disconnect throttle cable at pulley. Connect one ohmmeter lead to throttle actuator mounting stud. Touch other ohmmeter lead to Maroon, Orange and White wires in connector.
  2. Infinity (maximum resistance) should be measured at all wires. If not, throttle actuator is shorted. Both actuator and control unit must be replaced.
  3. Connect a vacuum gauge to large hose connection on actuator. Start engine. Connect a jumper wire between ground and Orange wire in connector. Connect a second jumper wire from battery voltage to both White and Maroon wires.
  4. Vacuum should be shown on gauge. Disconnect battery voltage. No vacuum should be shown. Repeat test several times to ensure valves operate correctly. If not, replace actuator.
scientia non olet · About LEMON Manuals