Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×

Thread Tools Search this Thread Display Modes
Old 07-22-2008, 06:44 PM   #1
1 Rivet Member
educator's Avatar
Join Date: Jul 2004
Posts: 16
Heater A/C control

Heater A/C control unit has gone bad on my 345. I am unable to control the heater or air-conditioning vacuum dampers. Has anyone replaced this control? It is not a Chevy or GM part. We guess it may be a Chrysler part, but have no idea as to the part number may be.
educator is offline   Reply With Quote
Old 07-22-2008, 10:08 PM   #2
Rivet Master
bkahler's Avatar

1974 20' Argosy 20
Richmond , Kentucky
Join Date: Jan 2003
Posts: 9,044
You are correct it most likely is a Chrysler unit, at least the one in our 1984 310 was. I believe if you look for a early to mid 80s unit you'll find what you need. I got ours off of eBay for about $25. You can also just take the control unit to a Chrysler dealer and they might be able to get one for you. I believe there is a part number on the unit itself somewhere.

This post has a copy of the vacuum diagram. It mostly matched mine with only minor differences. I spent several hours playing with the various vacuum lines making sure everything was working correctly.

The other thing to watch out for is vacuum leaks. Another reason our control didn't work was because someone plugged the vacuum line going up to the dash because of a cracked hose. That kept the vacuum gauge and the a/c controls from working. Took me a while to figure that one out!

Hope this helps.

Air forums # 1674
1974 20' Argosy Motor Home
1975 24' Argosy Motor Home
1974 31' Excella trailer (parting out, as of 4/1/2015 I have wheels & windows left to sell)
bkahler 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
Water heater - can't find temp control dano Water Heaters, Filters & Pumps 6 05-04-2010 06:36 AM
Heater Control Problem Northern Pik Member Introductions 0 05-28-2008 05:38 AM
Auxiliary Heater water control valve noiva Mechanics Corner - Engines, Transmission & More... 4 12-16-2005 03:50 PM
Heater Control- Warm Cool selector RonJudi General Motorhome Topics 5 01-31-2004 07:59 PM
Heater, Airconditionor Dash Control cooperhawk Airstream Motorhome Forums 4 11-11-2003 08:38 PM

Featured Campgrounds

Reviews provided by


This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.

All times are GMT -6. The time now is 01:24 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, Jelsoft Enterprises Ltd.