2012 Cascadia owners

Mpali5

New Member
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?
 
The air drains down as soon as I start driving. I think something to do with the air operated def pump.
 
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
 
Well, then, replace the DEF pump.

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

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