Air Injection Control Valve: Testing and Inspection

AUTOMATIC TRANSMISSION

Fig. 8b - Air Control Valve Test:

Fig. 8c - Air Control Valve Test:

1. Disconnect air hose at bottom of air control valve, Figs. 8B and 8C.
2. Start and run engine at idle speed.
3. Air should not be discharged from air control valve outlet port.
4. Disconnect intake manifold vacuum line from top of air control valve. Air should now be discharged from the outlet port.
5. If valve does not operate properly, replace air control valve, if necessary.

1977-79 MANUAL TRANSMISSION

Fig. 8D - Air Control Valve Test:

1. Disconnect air hose from bottom of air control valve, Fig. 8D.
2. Start and run engine at idle speed.
3. Disconnect vacuum line from air bypass valve. Air should be discharged from air control valve outlet port.
4. Plug the disconnected air bypass valve vacuum line. No air should be discharged from the outlet port.

Fig. 9 - Air Control Valve Test:

5. Disconnect intake manifold vacuum line from the No. 2 relief valve. Remove plug from disconnect air bypass valve vacuum line and connect line to the No. 2 relief valve, Fig. 9. Air should be discharged from the air control valve outlet port.
6. If valve does not operate properly, check vacuum lines and replace air control valve, if necessary.

1980-82 MANUAL TRANSMISSION

Fig. 9A - Air Control Valve Test:

Fig. 9B - Air Control Valve Test:

1. Start engine and bring to normal operating temperature.
2. Shut engine off, and disconnect air hose from bottom of air control valve, Figs. 9A and 9B.
3. Start engine and run at idle speed.
4. Disconnect vacuum control line from No. 1 relief valve of air control valve. Observe outlet port of air control valve. Air should be discharged.
5. Reconnect vacuum control line to No. 1 relief valve of air control valve. Observe outlet port of air control valve. Air should not be discharged.
6. Disconnect vacuum control line from No. 2 relief valve of air control valve.
7. Disconnect vacuum line from air bypass valve on 2.3 Liter engines, or from the EVAP shutter valve on 2.0 Liter engines. Reconnect this line to the No. 2 relief valve of the air control valve. Observe outlet port of air control valve. Air should be discharged.
8. Disconnect vacuum control line from No. 2 relief valve of air control valve. Connect this line to the air bypass valve on 2.3 Liter engines, or to the EVAP shutter valve on 2.0 Liter engines. Observe outlet port of air control valve. Air should not be discharged.
9. If valve does not operate properly, check vacuum lines, and replace air control valve if required.