Idle Controller
NOTE:
The idle controller attached to the throttle linkage is operated by manifold vacuum and keeps the idle speed from dropping when the A/C compressor is running. Vacuum is controlled by an idle control solenoid valve.
- If the idle controller does not operate with the air conditioner on, disconnect the vacuum hose from the idle controller and check for vacuum. If there is vacuum, replace idle controller.
- If there is no vacuum, check for voltage at the idle control solenoid valve. If there is no voltage, check the wiring and control unit.
- If there is voltage, disconnect hose routed to intake manifold at idle control solenoid valve and check for vacuum. If there is vacuum, replace idle control solenoid valve.
- If there is no vacuum, check the vacuum line to the intake manifold and repair or replace vacuum line or clean intake manifold as necessary.