Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×

Thread Tools Search this Thread Display Modes
Old 07-08-2012, 11:07 AM   #1
New Member
2001 35' Land Yacht XL w/2 slides
Kennewick , Washington
Join Date: Jul 2011
Posts: 4
Question Excessive Cockpit Heat

Hello all,

Hopefully someone can give us some insight. We are new to Motor Homing. We purchased a 2001 Land Yacht last year. When we drive it during a hot day we notice a ton of heat coming up from under the dash, more so on the drivers side. We have the Ford V-10 engine and the dash configuration where the TV is right above the dog house. The heat intensifies when we are climbing a steep grade and the extra engine cooling fan kicks on. Is there something we can do? Maybe add some extra insulation under the dash, or is NOT normal and should we have it looked at? The AC seems to be working, it just can't keep up with all that heat. We have run the generator and the roof AC in the past and that seems to help, but we are still learning something new every time we take a trip. Thanks for any advice you can give us.

Dianne and Bill
HalfWhit is offline   Reply With Quote
Old 07-08-2012, 01:11 PM   #2
2 Rivet Member
1979 28' Airstream Excella 28
Cedar City , Utah
Join Date: Aug 2010
Posts: 50
Images: 8
Had the same problem with my 1979 Excella Motorhome and discovered multiple causes. Hope yours is not so complex.

First determine if the engine is running hotter than it should for your model. Sorry, I cannot say what it should be. I replaced the radiator with a larger one and installed a better auxiliary cooling fan but in retrospect, the radiator alone was sufficient. Engine never exceeds 195 degrees now.

Second, if engine heat level is within normal parameters, simple modifications to increase airflow around the engine compartment can be made but should also include ensuring there is also a pathway to wick away the hot air.

Third, there may be gaps between the doghouse covering the engine compartment and the cabin area or insulation may have been removed. There are a number of products that combine insulating material and a reflective surface.

There may be other issues but these three top my list. Look for obvious changes that may have been done by a previous owner.

I hope this is, at least, a helpful step in searching for your cause. If you're not inclined to do the work yourselves, find someone to take a look at it for you.

marydixon555 is offline   Reply With Quote
Old 07-08-2012, 08:49 PM   #3
Rivet Master
crazeevw's Avatar
1989 34.5' Airstream 345
Saint Petersburg , Florida
Join Date: Apr 2010
Posts: 1,700
Images: 28
Honestly, it's been reported on several of the motorhome forums, that you're better off running the genset and both A/C units instead of the dash A/C. There's no way the dash A/C can possibly ever cool the entire rig. Plus, while using the dash A/C, you're probably getting 1mpg less. Where using the genset means you're buring 1 gallon of fuel per hour. Friend of mine with Holiday Rambler says he NEVER uses dash A/C while traveling, only genset and roof A/C's. More to the point, since whole coach is cool during travel, it doesn't take forever to cool it down once at campground.
crazeevw is offline   Reply With Quote
Old 07-08-2012, 09:13 PM   #4
2 Rivet Member
1979 28' Airstream Excella 28
Cedar City , Utah
Join Date: Aug 2010
Posts: 50
Images: 8
I agree that running the AC units is a good way of cooling things down. Mine only has one roof mounted AC and my coach is very old so heater and air conditioner were two separate non integrated systems. Nostalgic air parts built a custom unit for me per my specifications to integrate the systems. Your coach is newer and situation should be easier to resolve if necessary.
marydixon555 is offline   Reply With Quote
Old 07-09-2012, 06:03 AM   #5
2 Rivet Member
crazie_eddie's Avatar
On the Road , Michigan
Join Date: Oct 2009
Posts: 22
Another (almost) newbie with similar problems...

So you can run the generator while on the move to run the overhead AC, rather than running the dash AC? For some reason I thought the generator had to be off when the engine was on...

(not that we CAN use the overhead AC now - both froze up on the heat wave - NOR can we run the generator, 'cause it's surging... just hoping in future we'll actually get some stuff fixed... )
crazy eddie
"Of all the things I've lost, I miss my mind the most."
crazie_eddie is offline   Reply With Quote
Old 07-09-2012, 09:37 PM   #6
2 Rivet Member
1979 28' Airstream Excella 28
Cedar City , Utah
Join Date: Aug 2010
Posts: 50
Images: 8
Yes, you can run the generator while driving and so run the rooftop AC unit(s). If you cannot run the generator while the engine is on, you have a problem that needs to be resolved. My generator uses about one quarter American Gallon per hour when running the AC unit.

marydixon555 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

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 10:04 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.