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 09-01-2013, 01:58 PM   #1
Junior Member
Winnebago Owners Club
Join Date: Aug 2011
Location: Marysville Ohio
Posts: 27
chassis air not cool

I have a 03 Winnebago Adventure on a 8.1 workhorse chasse.no cool air are from dash a/c.tried to charge it but compressor just runs and shuts off and runs and shuts off.anyone have an idea what it could be?

hondaman 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 09-01-2013, 04:42 PM   #2
Senior Member
palehorse89's Avatar

Newmar Owners Club
Join Date: Oct 2009
Posts: 8,105
Usually when a compressor cycles like that it is low on Freon, there are low pressure switch's and high pressure switch's that can shut the compressor down, yours sounds like low Freon.

2000 Newmar MADP 4060, 350ISC, Spartan MM, IFS 2011 Jeep JK, M&G Braking, 2014 MTI 27' Hog Hauler, Wireless brake control, 2006Ultra & 1989 Springer
palehorse89 is offline   Reply With Quote
Old 09-01-2013, 06:48 PM   #3
Junior Member
Winnebago Owners Club
Join Date: Aug 2011
Location: Marysville Ohio
Posts: 27
it will not take the Freon just cycles off then comes back on???
hondaman is offline   Reply With Quote
Old 09-01-2013, 06:56 PM   #4
Senior Member
Denniscw's Avatar
Workhorse Chassis Owner
Join Date: Sep 2012
Location: Cumming, GA
Posts: 414
Originally Posted by hondaman View Post
it will not take the Freon just cycles off then comes back on???
I would put a set of gauges and find out what the pressures actually are compared to manufactures specs. The pressure might be too high.
2011 Serrano 31X, 2006 CR-V
Denniscw is offline   Reply With Quote
Old 09-01-2013, 08:06 PM   #5
Senior Member
GregOk80's Avatar
Join Date: Dec 2012
Location: Glenpool, Oklahoma
Posts: 326
If it has not been worked on how could the pressure be to high. Sounds like you might be trying to add to the wrong port or your tool to add freon might not be set up right.
GregOk80 is offline   Reply With Quote
Old 09-01-2013, 08:27 PM   #6
Senior Member
Dunner's Avatar
Join Date: Jun 2011
Location: Phx, Arid~zona
Posts: 11,106
If it's 134A, the fittings are different for high and low side.

Try spraying cool water in the radiator and raise the idle to about 15-1700.
2004 32' National Sea Breeze 1311 Class A on a F-53 Chassis, CHF, TST TPMS, 5Star Tune.
If Dunner (RVM23) can't fix it, it ain't broke!
Cheap Handling Fix Poll. Click Here to vote?
Dunner is offline   Reply With Quote
Old 09-02-2013, 07:19 AM   #7
Senior Member
wa8yxm's Avatar
Damon Owners Club
Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 23,843
And 134A IS ALSO NOT freon.

One question and the reason for it.. Is this a "New to you" RV?

The major issue with many RV's is all that windshield.. I mean you are sitting in a greenhouse.. That Dash A/C is designed to cool the cab of something like a Ford F-350 Pick up or a Chevy 30, To cool an RV is way, way, way beyond it's ability and when you add all that blasted Greenhouse glass... NO WAY will it work.

I have a thermomemter stick so the sensor tip (it's the kind they use to check Air Conditioners) is in the air flow to one of the dash vents (Stuck it right through the hose)

IT shows the A/C working perfectly.. But I'd be hard pressed to say I can feel it working.
Home is where I park it!
wa8yxm is offline   Reply With Quote
Old 09-02-2013, 07:41 AM   #8
Community Moderator
"007"'s Avatar

Nor'easters Club
Workhorse Chassis Owner
iRV2 No Limits Club
Join Date: Oct 2004
Posts: 27,798
If you read this link may find what is going on with your dash poor cooling.
You can buy new Evans control valve or add a ball valve in one of the heater hoses.
Its the same problem in a gas or DP coach.
98KSCA, 99MACA, 03 KSCA-3740- 8.1 Chev-- ALLISON Trans, now in good hands
"007" is offline   Reply With Quote
Old 09-02-2013, 08:54 AM   #9
Junior Member
Winnebago Owners Club
Join Date: Aug 2011
Location: Marysville Ohio
Posts: 27
yes it is new to me.it is blowing out warm air.
hondaman is offline   Reply With Quote
Old 09-09-2013, 02:56 PM   #10
Senior Member
Randy125's Avatar
Newmar Owners Club
Join Date: Dec 2011
Posts: 328
I believe palehores89 is correct. If you can find the low pressure switch you could disconnect wire and jumper across to keep compressor engaged while adding freon or bring the engine idle speed up around 1200-1500 while adding freon.
2002 KSDP 3669/Freightliner XC CHASSIS/Cummins 5.9 ISB 300hp
Joplin, MO
Randy125 is offline   Reply With Quote
Old 09-09-2013, 03:09 PM   #11
Senior Member
Join Date: May 2012
Location: Deep in the Heart of Texas
Posts: 466
If it is a bad dash air, you'll probably find you can run the genny quite a while, and stay a lot cooler for the $ you would spend fixing dash air.
2000 DSDP, 3894,Freightliner,330 Cat, 07 Jeep Commander 4x4toad.
ARTWERKE is offline   Reply With Quote
Old 09-09-2013, 03:23 PM   #12
Senior Member
Jimooo's Avatar
Winnebago Owners Club
Join Date: Jun 2011
Location: Amite, La.
Posts: 289
Try your cool control to defrost to see if it is still hot air.

It should have taken a charge as long as the clutch is engaged .

You may want to put gauges on it and check pressures.

Hope this helps,

Jimooo is offline   Reply With Quote
Old 09-09-2013, 03:35 PM   #13
Senior Member
Join Date: Jan 2008
Location: Big Bear Lake, Ca
Posts: 912
Sometimes the valve which shuts down the hot air from the heater leaks hot air. I added a second valve to the other side of the heater core and it stopped it. 3M also makes a clear film for the inside of the windshield which rejects 99% of the heat. I put a film on that rejects 70%, before they had a 99% and it is amazing.
Forest Grump is offline   Reply With Quote
Old 09-10-2013, 01:04 PM   #14
Senior Member
Ray,IN's Avatar
Join Date: Aug 2001
Location: North America somewhere
Posts: 13,881
Leave the refrigerant can hooked up and open, A/C on max; the short-cycling will slowly improve as the system pulls in refrigerant. Hold the can upside-down during the short-cycling for faster fill to add liquid, turn can right-side-up after the short-cycling stops to prevent a potential compressor failure. Your fill hose does have a gauge incorporated to prevent over-fililing, right?
That's my method, use at your risk.

2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member,FMCA."We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert the Constitution. "Abraham Lincoln"
Ray,IN 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
Large power draw on chassis battery '94 Kountry Star omegacanuck Newmar Owner's Forum 54 01-31-2016 08:22 PM
Spartan Chassis with Evans Dash air montiem Newmar Owner's Forum 28 07-29-2013 10:20 AM
Dometic Brisk II Air Conditioner 15,000 BTU adonh RV Systems & Appliances 4 06-27-2013 02:54 PM
Air Bag Suspension on F53 Chassis aschuller1 Fleetwood Products Owner's Forum 10 06-13-2013 10:40 PM
1995 Spartan MM Chassis: Check your Dessicant Air Filter! jaytho Spartan Motorhome Chassis Forum 0 06-08-2013 09:14 AM

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 01:16 PM.

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