EGR Electronic Vacuum Regulator Solenoid: Testing and Inspection

1. Remove the EGR vacuum regulator solenoid.
2. Check EGR vacuum regulator solenoid resistance. Reading must be within 30-36 ohms.
3. Connect vacuum pump to lower port. Block off the upper port and apply vacuum. Check if EGR vacuum regulator solenoid holds vacuum.
4. If resistance reading is out of specification or if EGR vacuum regulator solenoid holds vacuum, replace EGR vacuum regulator solenoid.
5. Install EGR vacuum regulator solenoid.