B Series Truck 2WD L4-2184cc 2.2L 2200 2-bbl (1990)
Mixture Control Solenoid - Slow Cut: Testing and Inspection
1.
Disconnect the carburetor connector halves.
2.
Turn ignition "ON" and check harness side of carb connector (terminals with B/W wires) for voltage.
^
Should have battery voltage.
If not, check wiring for open or short to ground.
3.
Turn ignition "OFF" and re-connect carb electrical connector.
4.
Turn ignition back "ON" and then "OFF" again, while listening to the slow fuel cut solenoid.
^
Solenoid should click each time the ignition is turned "ON" or "OFF".
If not, replace solenoid.
5.
Start engine and let idle.
6.
Disconnect carb electrical connector.
^
Engine should die.
If not, check solenoid valve for proper installation. If valve needle and spring are not missing, replace solenoid.
To check control signal functions, see COMPUTERIZED ENGINE CONTROLS.
