T&P

[homer7318]

My pressure gauges on my 2000 mountainaire ouit working only get red red lights on them they went out a year apart where can I find replacements

[racerdave]

Not knowing what chassis you have, but I have a Spartan and purchased replacements from them. You might also make sure the ground is good.

[homer7318]

Originally Posted by homer7318

My pressure gauges on my 2000 mountainaire ouit working only get red red lights on them they went out a year apart where can I find replacements

would red light still comr on if I had a bad ground

[homer7318]

would I still get red light with bad ground

[racerdave]

Possibly, the gauges (needles) work off of variable voltage. The little red led probably requires about 3v to work. This variable voltage comes from 2 sending units under the floor. They can also be a victim of corrosion might just need to clean the connections well and check the grounds especially under the dash close to gauges. If that doesn't work, buy one of the pressure sending units and stick it in.

The previous owner of my unit ruined mine with some creative air line plumbing.

Safety: start the coach and let it air up. Should about 2-3 minutes. Then put some shot ring under the front axle. Them dump your air bags. Then and only then work on these air senders.


Before I started, the gauges were showing
150 psi+ and the red lights were on...

[racerdave]

That's shoring under the axle...block it up!

[racerdave]

After thinking on this I realized I made a mistake. You actually put the shoring under the frame rails, not the axle. I use a.pair of Jack stands rated for 5 tons each.

[Hooligan]

IF you have a Freightliner chassis. In 2000 FTL used the Medallion System III gauges. Information for the gauges is supplied by the VDC (Vehicle Data Computer) Poor solder connections to the air pressure transducers in the VDC did cause gauge problems. I had a 2000 GeorgieBoy DP, indications at various times were speedometer or air pressure gauge going to zero. (Cruise control still worked/ no alarms or lights)
A service bulletin is available here on IRV2 to troubleshoot the gauges.
http://www.irv2.com/forums/attachmen...8&d=1399154181

The VDC solder repair is discussed here. http://www.irv2.com/forums/downloads.php?do=file&id=76
Both articles are in the files section of IRV2 and can be downloaded.

Note: The VDC was put in various locations by the RV manufacturers, mine was in a rear compartment on the passenger side, along with the ECM, Transmission module and VIM. You can see the air lines coming into the VDC..


Hope this helps.