Posted 1/9/2016 19:19 (#5024189 - in reply to #5023677) Subject: RE: C-15 cat, not building air pressure
Claremont,MN
It is most likely a dozen air dryer. Check for power between the two wires going to the air dryer if thier is power you need a new heating element for your air dryer. If the heating element is bad you can replace just that but it probably time to do the descant filter also or just get a new dryer altogether.