[Richard]

Thank you for all the details. Given the recent work by at least two different parties, who knows what we have. So we are going to go through the basics. It will help if you look up Newell Air System Fundamentals on YouTube.

Let’s do two things as a top level diagnostic. We are trying to determine if you have a massive leak OR the engine compressor system will not provide it.

Plug in the external compressor and set it to 100 psi. What happens? If the coach builds pressure eventually, then the diagnosis of the engine compressor/governor/air dryer may be accurate. If it doesn’t build pressure, you may have an air leak that the engine compressor cannot overcome.

Second, with the key on, and the coach in the travel mode. Check all three six packs and draw a picture of which solenoids are magnetized. With the total replacement, we have to ensure the solenoids are wired correctly or no progress is possible.

I can certainly appreciate your willingness to help get someone on the road.

Personally, I prefer using the forum to solve issues for two reasons. One, it forces the poster to take the time to organize their thoughts and present them in an orderly fashion. Second, it provides a record of what is happening and you get the benefit of the tribal knowledge.