Re: We have a situation. Cycling air pressure
Reply #4 –
Cycle time depends on air use of suspension and brakes. No average time is recommended as a diagnostic tool.
If suspension is aired up and you are not on the brakes, while parked, you could well more than make it through happy hour before it cycles.
As several of us have already said, the air dryer, particularly if it has not been replaced in the last 3 year would be atthe top of the "suspect list", particularly if cycle times have now increased. Not likely a large leak would "repair itself", but a sticking valve in the dryer could.