Spirit L6-258 4.2L VIN C 2-bbl (1982)
Air Diverter Solenoid: Testing and Inspection
NOTE: Engine must be at normal operating temperature.
1. Connect one lead of a voltmeter to light green wire at rear of divert solenoid plug and other voltmeter lead to ground.
2. Start engine and idle at 700 rpm.
3. During the first 75 seconds of engine operation, voltmeter should indicate battery voltage. After 75 seconds of engine operation, the voltmeter
should indicate 1 volt.
4. Accelerate engine. Voltmeter should indicate battery voltage and the 75 second time period should begin.
5. If a low voltage reading is indicated on the voltmeter before the 75 second time period elapses, check for pinched wire in harness relay. If wire is
OK, replace extended idle relay.
6. If voltmeter does not indicate low voltage after the 75 second time delay period elapses, disconnect open loop switch electrical connections and
connect a test lamp to Open Loop 3 (red with tracer wire). With engine operating at 700 rpm, test lamp should go on. Disconnect vacuum from
Open Loop 3 switch, light should go off. If vacuum switch does not operate as described, replace open loop switch assembly.
7. Connect vacuum and electrical connections.
8. Disconnect divert solenoid electrical connection and connect test lamp to one terminal of solenoid battery positive terminal. Connect other
terminal to ground. Test lamp should go on and vacuum should be present through solenoid. If not, replace solenoid and/or locate air leak. If
solenoid is operating normally, replace extended idle relay.
