2012 Cascadia owners

How often does your air compressor cycle? 2012 cascadia uses air pressure for the def pump. Mine cycles Every 4-6min which I think is too often. Curious to see what others do?
 

Injun

Rabid Squaw
Staff member
Supporter
Have your governor checked. That's too much.
 

mndriver

curmudgeon extraordinare
Supporter
Got an air leak somewhere
 
The air drains down as soon as I start driving. I think something to do with the air operated def pump.
 

mndriver

curmudgeon extraordinare
Supporter
You've probably got a bad diaphragm on brake chamber if it starts as soon as you start driving.
 
Brake chamber would leak as soon as I released the brakes. My leaks only when moving. I really think that my def pump is using too much air
 

mndriver

curmudgeon extraordinare
Supporter
Moving?

Or just brakes released?
 

Injun

Rabid Squaw
Staff member
Supporter
Well, then, replace the DEF pump.

When that doesn't work, look at the governor and brake system.
 
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