Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 09-15-2014, 09:51 PM   #1
Airstream14's Avatar
Join Date: Jun 2014
Posts: 31
Guages go off when AC gets turned on???

I am working on my 1999 Airstream Cutter with a Cat engine just so you know. I had another thread about gauges don't work and thought I had them fixed.
Ok so my gauges were not working at all so as standard procedure I cleaned all connections to the computer box that run them and they worked After a short celebration and a beer at home with the dog, I proceeded to my next problem. The AC had quit working at the same time the gauges stopped working. I started the unit , gauges worked great turned on the AC and all warning lights came on and gauges quit working:(
I turned the AC off and on again and the gauges started to work then quit.
When I start the engine without the air on the gauges work fine. I can't figure how the gauges are connected to the ac. I guess the computer has taken a dump? The computer was replace 8 months ago. I am thinking about taking it to a dealer but I would bet the dealer would have a lot of time tracking it down also. Second option would be to buy the $350.00 computer again. Third option keep working on it and trouble shoot the AC unit. It has enough gas in it and the pipe runs cold however it always puts out heat. I think the flap door is not opening possibly. I have 20 hours in this problem already and could use any ideas anyone may have. Also my Moral is running low to say the least. This forum is a great help and I thank you for your responses in advance.

Airstream14 is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 09-15-2014, 10:17 PM   #2
Senior Member
Join Date: Nov 2003
Location: Richmond Hill, GA USA
Posts: 675
Dash AC or Roof AC?

Without knowing the answer to the above question, the symptoms you describe point to an electrical connection that breaks down with additional load placed upon it. It makes this theory more logical if you're talking about the dash AC.

Have you cleaned all battery terminals and examined the cables/connections for broken wires/corrosion?

checked and cleaned all grounds?

Since you've been working on the guages already, I assume you already have the Freightliner SB 54-12 that describes how to troubleshoot the dash instruments (I'm assuming that you have the System III instrument system with the message center).

Please let us know what you find. I have the same system and I'm always interested in learning how problems with it are solved.

Good luck.


Fred & Vicki
St. Augustine, Fl.
Fred Cooper is offline   Reply With Quote
Old 09-16-2014, 01:31 PM   #3
Airstream14's Avatar
Join Date: Jun 2014
Posts: 31

Yes I have cleaned all battery connections and the 2 plugs that controll the gauges. I have the batteries at 100% and I have removed the dash and checked all connections on the gauges. Yes it is the dash air that is causing the problem. I will end up solving this problem I am sure and will post a reply.
Airstream14 is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Dream has turned into a nightmare. Kingrocks Entegra Owner's Forum 37 02-07-2015 09:46 AM
Turned 75 today! MSHappyCampers Just Conversation 32 07-24-2014 06:20 PM
Fleetwood 40x can the driver's seat be completely turned around? 4tfamily Fleetwood Products Owner's Forum 9 04-26-2014 09:16 AM
Dicor turned pink? Pilgrimfarms Class A Motorhome Discussions 9 01-15-2014 03:00 PM
No crank when key turned to start position '07 Fleetwood Revolution rlund1 Class A Motorhome Discussions 13 12-08-2013 08:04 AM

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 05:24 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.