Line drawing of EGR vacuum regulator solenoid with vent, plugged…

EVR Testing: vacuum should vent from the green line (supply port) on a good valve NOT energized. When energized, vacuum should hold from the black (source port) to the green (closer to the electrical connector).



Resistance across the terminals should be 20-70 ohms.

For smallblock trucks, see:

Owner caption January 2005 · Photo 204 of 980