Community Forums

Ron Stennes · 08-01-2022, 11:03 AM

Hello all, I have a 2008 Monaco dynasty and I'm having problems with the valid aux air pump. The pump will not run, I have checked the fuse which is good. I replaced the 90-120 air sensor and that did nothing. I also removed the pump and hot wired the pump which did rotate. I have noticed that there is no air in the line to the 90-120 sensor? How do I get air in the line? The engine was running prior to line being removed and no air present. Thank you everyone.

MSHappyCampers · 08-01-2022, 11:12 AM

Hi ! Welcome to IRV2! We're sure glad you joined us!

Hopefully someone will be along to help.

Good luck, happy trails, and God bless!

windsorbill · 08-01-2022, 09:25 PM

Quote:

Originally Posted by Ron Stennes

Hello all, I have a 2008 Monaco dynasty and I'm having problems with the valid aux air pump. The pump will not run, I have checked the fuse which is good. I replaced the 90-120 air sensor and that did nothing. I also removed the pump and hot wired the pump which did rotate. I have noticed that there is no air in the line to the 90-120 sensor? How do I get air in the line? The engine was running prior to line being removed and no air present. Thank you everyone.

Monaco did plumb many of the coaches wrong, mine included, but even if it was plumbed incorrectly, that wouldn't stop the air from getting to the sensor.

The way it should be plumbed, is there should be a check valve immediately after the pump. If your pump is producing air, that check valve may have failed closed. There is nothing else between the pump and the sensor.

96 Wideglide · 08-01-2022, 09:42 PM

Have you opened the drain screw on the bottom of the small leveling air tank?

If the compressor is functional, and there's 12v power to it, that should get it running.

Ron Stennes · 08-02-2022, 06:10 AM

I don't see a check valve anywhere but I will look around.

shootist · 08-02-2022, 08:26 AM

Quote:

Originally Posted by Ron Stennes

I don't see a check valve anywhere but I will look around.

Mine is rt on the airline at the pump discharge. Looks like a steel hose fitting

windsorbill · 08-02-2022, 10:24 AM

Quote:

Originally Posted by Ron Stennes

I don't see a check valve anywhere but I will look around.

yea, they are hard to spot if you don't know what to look for. Almost looks like a coupling.

It should be connected right to the pump.

Post some pictures if you can't find it.

Ron Stennes · 08-02-2022, 01:10 PM

Found out there was no relay, so have one on order. Borrowed one from the smart wheel and the pump worked but not producing air. Took the pump out and the piston is shot.

moisheh · 08-02-2022, 02:09 PM

The Valid pump is mounted in a bad spot

Gets road grime and they do not last long

Ron Stennes · 08-02-2022, 02:35 PM

Ordered new pump from e-trailer. Their is a "T" right out of the pump is that possibly the air check valve? One line goes to the sensor and the other goes off to who knows where, feels like e goes through the wall? Still have to figure that out.

windsorbill · 08-02-2022, 02:49 PM

Quote:

Originally Posted by Ron Stennes

Ordered new pump from e-trailer. Their is a "T" right out of the pump is that possibly the air check valve? One line goes to the sensor and the other goes off to who knows where, feels like e goes through the wall? Still have to figure that out.

The T could be the check valve. The line going through the wall probably is going to your air reserve tank, trace it out.

96 Wideglide · 08-02-2022, 06:47 PM

Quote:

Originally Posted by Ron Stennes

Ordered new pump from e-trailer. Their is a "T" right out of the pump is that possibly the air check valve? One line goes to the sensor and the other goes off to who knows where, feels like e goes through the wall? Still have to figure that out.

Have you located the leveling air tank?