5. IDLE FUEL SHUT-OFF SOLENOIDS (used in 1971-72 models)

Function

Idle fuel shut-off solenoids act as check valves. When the ignition switch is turned OFF, the solenoids shut off the fuel at the idle port to prevent "dieseling" or "after-run."

Problem

If idle fuel shut-off solenoids are not functioning properly, the driver may experience

1. Dieseling or after-run.

2. Shut-off valve malfunction produces the same characteristics as a "plugged" carburetor idle jet (rough idle).

Testing

1. To test the idle shut-off valves, disconnect and reconnect the single pin connectors individually with the ignition switched on. The noise caused by the valve opening must be audible. (See Fig. 1)