When I put my 86 Royale on the centre stand and set the front and rear to low, medium or high the compressor pumps the pressure to the correct P.S.I and will hold it without loosing any air. As soon as I switch the key to any other position and back to check the pressure both fron and rear are at zero p.s.i. There is no error message on the display.
Is the most likely reason for the sudden loss of air pressure when the keyk is switched off due to a bad solenoid? I have a friend with a spare and we are going to swap them to see what happens.
I think that the ability to hold the pressure indefinitely with the key in the accessory position means that there are no plumbing or seal leaks. I hope that it is a solenoid as that will be an easy fix.
Has anyone out there had a similar experience?