EGR 2005 200hp hpdi

[jerryjerry05]

Was cleaning the carbon from the EGR valves on the twin motors.
Both joints or plungers were solid and closed off.

The question is the stbd. motor when the key was off the EGR had power(12v) to the unit.
And it was HOT!!!!
The port EGR with the key off had no power to it???

Why would one have juice(12v) when the other doesn't?
Have other posts with a few problems.
Was wondering if this can contribute to the poor idle on this motor?
THANKS!!

 

[jerryjerry05]

More for the first post.
The EGR I guess it's not called that but called a sensor.
port bank top of the block also called a heater.

Should it have power when the key's off?

 

[jerryjerry05]

The poor idle was fixed when the carbon was cleaned from the sensor, heater.