Problem fixed actuator or solenoid. From Amazon $72.00 small spring hose clamp and e clip from auto parts $7.00 . Plus 1 hour labor. Now no air...
Yes when disconnect the harness from VPOD air stop leaking from wastegate solenoid .thank you.
Today disconnected air lines out of secondary tank and blocked fitting connected to the tank .started with blue 3/8 no change the silver one 3/8...
Tomorrow will block the lines going to airbags and check the pressure.
New discharge line replaced from air compressor to air dryer.
Tomorrow I'll disconnect every hose connected to secondary tank an block it from tank . One by one .and see if I have leak or not.
I have the same problem air leak from secondary . Have manual switch inside cab to cut the air going to fan cluch Changed air compressor, air...
I have ultra sound device for air leak checking .used while engine is off no air leak .
I have freightliner cascadia 2015 truck is parking .engine is running. slow air built 5 minutes to purge. Start loosing air and purge cycling...