Intermittent "low air" pressure

[cuemaker]

I get a low air indicator bouncing and alarm when first starting on a morning trip. After about 10 or so minutes it seems to settle out. I do not notice any low air which makes me feel its the sensor, wherever it is.... Any help appreciated...

[Coached]

Chock your wheels, release your emergency brake, start your engine and run it until the compressor kicks out - your gauges should show at least 120 psi, maybe as high as 150. Turn off the engine and hold your foot on the brake pedal for at least two minutes and listen very carefully. Ideally you have someone else on the brake while you're outside listening all around the coach for any air escaping. If your gauges drop more than 10 or 20% max. you have an unacceptable air leak / loss somewhere. If you don't you may very well have a faulty gauge, but this is quite unusual? Don't forget that one of your tanks provides air to your suspension as well as the brakes, assuming you have air suspension? You really should do this test regularly to be sure you don't have leaks. Our brand new Revolution need two valves replaced on the rear axle with less than 2500 miles on the clock. Our '08 Tiffin 42' tag had three leaks, all fixed by tightening and relocating hoses, in the first year. This stuff happens which is why you have to do your daily "checks"? Good luck.

[ernieh]

The pressure gauges are fed from the computer which is in the engine compartment on a cross rail under your bed. Bad solder joints have been common in the computers of your era. Many have been successful in resoldering the "cold joints".

This problem has been discussed several times on this forum.

Good luck.