EGR Valve: Testing and Inspection

OPERATION INSPECTION
Refer to EGR system inspection procedures.
Testing and Inspection

EGR VALVE INSPECTION:
1. REMOVE EGR VALVE.
- Disconnect the EGR gas temperature sensor connector.
- Disconnect these hoses from the EGR valve:



1. Vacuum hose (from EGR vacuum modulator).
2. EGR hose (from EGR vacuum modulator).




- Loosen the union nut, and remove the 2 bolts, EGR valve and gasket.

2. INSPECT EGR VALVE.



- Check for sticking and heavy carbon deposits.
- If a problem is found, replace the valve.

3. RE-INSTALL EGR VALVE.
- Install a new gasket and the EGR valve with the union nut and 2 bolts.

Torque: Bolt: 19 Nm (19 ft lb)
Union nut: 59 Nm (43 ft lb)

- Connect these hoses to the EGR valve:



1. Vacuum hose (from EGR vacuum modulator).
2. EGR hose (from EGR vacuum modulator).

- Reconnect the EGR gas temperature sensor connector.