Dog,
I had similar symptoms with my coach. I first rebuilt the dryer, which made no difference. (That action fixed the issue on my previous coach with the same symptom.) I then replaced the governor, which changed the purge interval from 45 seconds to several minutes.
Air suspension was mentioned. Does this affect the purge rate?
Everyone! Go buy an extra governor. It has never made sense to drive a $200K coach, and get stranded over an $18 part that nearly anyone could replace in 4 minutes. Our governor is so easy to access that it is almost crazy.
Matt B
