EGR Electronic Vacuum Regulator Solenoid: Testing and Inspection

Vacuum Regulator:

1. Disconnect the vacuum hoses from the Exhaust Gas Recirculation (EGR) vacuum regulator solenoid.
2. Lightly blow air into the EGR vacuum regulator solenoid and verify that air does not flow.
3. Disconnect the wiring from the EGR vacuum regulator solenoid.
4. Apply battery voltage and a ground to the EGR vacuum regulator solenoid at the connector.
5. Lightly blow air into the EGR vacuum regulator solenoid and verify that air does flow through solenoid.
6. If air does not blow through the solenoid, replace it.