Auxiliary Air Valve
- Disconnect hoses from auxiliary air valve. Use a mirror and small flashlight to inspect valve. See Fig 1. At room temperature, valve should be slightly open. If equipped, disconnect wires from air flow sensor. With ignition switch "ON" valve should cover opening within 5 minutes.
With ignition switch "ON", valve should cover opening within 5 minutes.
- If valve does not operate properly, check for power at connector with engine running. Connect a test lamp across connector terminals. If lamp does not light, check fuse and wiring.
- If lamp lights, check resistance of auxiliary air valve. If no resistance is measured, valve is defective. Ensure electrical connections are tight and terminals are clean, prior to measuring resistance.