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:
![evrtest.jpg 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).
[url=https://www.supermotors.net/registry/media/1167873][img]https://www.supermotors.net/getfile/1167873/thumbnail/secondaryairvalves.jpg[/img][/url]
Resistance across the terminals should be 20-70 ohms.
For smallblock trucks, see:
[url=http://www.supermotors.net/registry/media/826382][img]http://www.supermotors.net/getfile/826382/thumbnail/egrtubesv8.jpg[/img][/url]](https://www.supermotors.net/getfile/173786/fullsize/evrtest.jpg)