B250 3/4 Ton Van V8-318 5.2L VIN T FI (1992)
EGR Control Solenoid: Testing and Inspection
NOTE:
EGR system must pass CONTROL SYSTEM TEST, EGR SOLENOID TEST and GAS FLOW TEST to pass FUNCTIONAL TEST.
SOLENOID TEST
1.
Disconnect electrical connector from solenoid valve.
2.
Remove vacuum hoses. With a solenoid wire disconnected air should flow from the vacuum port through the vent port. Energize the solenoid, air
should flow through both vacuum ports. If either test fails, the solenoid valve must be replaced.
3.
Connect either solenoid terminal to a ground and the other one to the battery positive terminal, then listen for clicking noise from solenoid as it is
connected to battery positive terminal. If the solenoid does not click, it is defective and must be replaced.
