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

Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Monaco Owner's Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  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 10-27-2021, 03:18 PM   #1
Junior Member
 
Monaco Owners Club
Join Date: Aug 2021
Location: Mercedes, Tx
Posts: 6
Diagnose dash A/C Problem

So I bought this 2010 Monaco Camelot 42 PDQ 2 1/2 months ago with 28,000 miles on it. It has an ISL425 Cummins and a 10K Onan. It seems to be in good condition with a few exceptions, the main one is the dash AC.
In the previous owners maintenance records they had an issue with the dash AC not cooling very well. As I first started driving the MH I noticed the dash AC would cool just ok and then not so well. It really wasn't doing so well overall, so I took the MH to a Freightliner shop and this was their diagnosis: "Freon was slightly low at 2.65 lbs, no leaks found Vac and charge system to 3.5 lbs and found still blows 62 degrees out of vents, checked temp on AC lines going into evaporator found 34 degrees, checked evaporator core temp found 36 degrees removed blower motor and checked for damaged HVAC box none found on the outside. Lifted dash panel and checked the inside, unable to fully access HVAC box, advised foreman will need to remove HVAC box or remove dash to inspect HVAC box for sucking fresh or outside air after evaporator core."
Service manager told me that flap/door or something not allowing air to go across evaporator. Dash would have to be taken out and that would be very expensive because it would take 25 to 30 hours labor. I chose to wait on that.
So, I drove the MH home and still working poorly. Then, one morning it was chilly outside, so I turned the dash heat on and it seem to work somewhat. However, now when I turn it back to AC it still blows hot air out the vents.
Now, let me back up and fill in my thought. When I first drove the MH, it sounded like there was some wind noise at the top front of the entrance door which I now believe is a vacuum line broken or cracked.
My brother stood by that area as I drove and he agrees it is either a vacuum or air line which I can't access. So we pulled the generator out on the rails and my brother pointed out there was a vacuum generator in that area with a line running into the dash. We removed the leather padded piece at the top front of the entrance door and it appears the same line from the vacuum generator was running up the area between the front door and the windshield. I don't have the ability to access the area above the entry door to see if in fact their is a broken/cracked line that could be the reason why the flaps/doors inside the dash aren't directing the air as it should. Does this line go back to the engine? If anyone has had this issue please let me know the solution. Also, if you know of a repair source that I could take the MH to that can tackle this problem.
Thanks.
mbunchfive 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 10-27-2021, 04:20 PM   #2
Senior Member
 
Jetskier50's Avatar
 
Join Date: Nov 2016
Posts: 194
Now, let me back up and fill in my thought. When I first drove the MH, it sounded like there was some wind noise at the top front of the entrance door which I now believe is a vacuum line broken or cracked.

Thanks.[/QUOTE]

Our 2007 has an air seal around the door. The inner seal fills with air when put in drive.
__________________
Brian

2007 Signature Noble III 45' ISX 600 HP, Allison 4000
Jetskier50 is offline   Reply With Quote
Old 10-28-2021, 02:15 AM   #3
Senior Member
 
153stars's Avatar
 
Join Date: Mar 2019
Location: Braidwood Il.
Posts: 4,209
Another thought to add to mix is hot coolant shut off valve is not working properly.
Some Owners have also added valves near motor to both heater hoses . It can keep you on the road if one of hoses leaks.
__________________
95 Monaco Crown Royale
M11 400hp, 4060 trans.
Aquahot, Generac Guardian7.5k
153stars is online now   Reply With Quote
Old 10-28-2021, 03:53 AM   #4
Senior Member
 
Xmcdog's Avatar
 
Join Date: Dec 2019
Location: Nova Scotia
Posts: 1,709
Quote:
Originally Posted by 153stars View Post
Another thought to add to mix is hot coolant shut off valve is not working properly.
Some Owners have also added valves near motor to both heater hoses . It can keep you on the road if one of hoses leaks.
This is a common issue with automotive type A/C. Easy to test. Clamp off the supply hose for the heater using padded vice grips. The added valves is an excellent suggestion. Let us know how you make out.
__________________
Jeff and Annette Smith
04 Glendale Titanium 24E29 Fifth
2011 GMC Diesel 2500 HD
Xmcdog is offline   Reply With Quote
Old 10-28-2021, 07:46 AM   #5
YC1
Senior Member
 
YC1's Avatar


 
Join Date: Jun 2011
Location: FL
Posts: 9,684
https://1drv.ms/u/s!Aqrv2TUdbV6xqF0k...SmGal?e=VBuBx3

Our 2008 Endeavor does not have a door seal, I wish it did.\

Here are some notes gathered over the years that might help.
__________________
Myron & Deborah
08 HR Endeavor 40 SKQ
400 Isl, 400 HP/// Now 450 HP
2016 Ford F150 Limited V6 with Ready Brake
YC1 is offline   Reply With Quote
Old 10-28-2021, 01:06 PM   #6
Senior Member
 
vito.a's Avatar
 
Monaco Owners Club
Join Date: Oct 2009
Location: Tucson, AZ
Posts: 5,483
mbunchfive, are you asking if the vacuum line runs back to the engine?
The answer is no. Diesel engines do not create vacuum like automotive gasoline engines. Diesels rely on an electric operated vacuum generator.

I would install a gate valve on the hot water heater hose up in the generator compartment before it enters the dash heater core area. Manually turn it off in the summer and on in the winter.

For the vacuum leak, I would temporarily clamp off the vacuum hose going up above the door. Then see if your other air doors work correctly.
__________________
97 Monaco Windsor- Sold
07 Monaco Executive McKinley- Sold
04 Monaco Signature Chateau IV
vito.a is online now   Reply With Quote
Reply

Tags
dash, dash air conditioning, monaco, problem



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
Diagnose Problem brucep86 Class A Motorhome Discussions 11 02-19-2021 10:25 PM
Diagnose problem with 2nd furnace? Born2RV MH-General Discussions & Problems 8 08-28-2018 10:04 AM
How do you diagnose a bad hydro boost vs PS pump jmoon59 Fleetwood Owner's Forum 4 12-01-2012 09:28 AM
How to Diagnose and Fix a Bad Leveling Jack Jackm MH-General Discussions & Problems 5 11-07-2009 09:31 PM
Diagnose shocks?? bruceh Workhorse and Chevrolet Chassis Motorhome Forum 20 09-09-2008 09:27 AM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 03:41 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.