Air tank sensor problems...

[TruDat]

While driving my coach... my "Tank 1" air pressure gauge will go "haywire" for a few seconds (needle on gauge bobs up and down) and the warning buzzer will sound. This only happens for a few seconds, then the pressure gauge will return to normal pressure (comparing the psi to the "Tank 2" pressure gauge).

I really think it is just a sensor. Has anyone else heard of this or had this happen?

[johnboy545]

Both sensors should be located under the floor at the brake pedal attachment..........The sensor for your tank 1 is probably bad or has a bad ground............I had the same problem and it was a 20 dollar sensor.........It's a pain to get under there to check......I ordered a new sensor before I crawled under the bus and replaced it.........One trip under and I was done..........I don't think it's the gauge because Stewart Warner or Borg Warner gauges last forever, but it could be a bad gauge....Check the wiring to the back of the gauge first, it might be loose.....
John

[njs42]

Almost certainly a short or loose wire-----had the same experience (different set up) but it was the wire to the light in the guage shorting.