EGR Valve: Testing and Inspection

Comp. Loc:

EGR VALVE INSPECTION

INSPECT
1. Disconnect vacuum hose from EGR pressure transducer or from EGR Solenoid Vacuum (EGR SV) valve.
2. Connect vacuum pump to its hose.
3. EGR valve diaphragm that it moves smoothly and that it is held at the same position when more than 20 cm Hg (8 inch Hg) vacuum is applied to EGR valve.

INTERPRETING TEST RESULTS
If diaphragm doesn't move smoothly or it isn't held at the same position, replace EGR valve.