Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test 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.
  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 05-28-2023, 08:45 PM   #1
Junior Member
Join Date: Sep 2017
Posts: 2
99 dynasty dash ac blend doors location

My dash ac / heat blend doors are not switching when I move knob. I have 18 in. Of mercury ( vacume ) so my vacume should be enough but they won't move till I get to 25 on my hand pump. Where do I access my blend doors ?
Mikeehoff is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free! 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 05-28-2023, 09:24 PM   #2
Senior Member
Skip426's Avatar

Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 30,382

Do you have any info on the supplier of the dash A/C unit in your coach ?

With vacuum controls I'll assume your system is Evans/Tempcon .

Where are you taking your measurements ?

The distribution control in the dash may be plugged up , you have to check the vacuum at the output from the control to the vacuum actuators of the blend air doors.
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
Skip426 is offline   Reply With Quote
Old 05-28-2023, 10:29 PM   #3
Junior Member
Join Date: Sep 2017
Posts: 2
Sticky dash blend doors ?

Thanks skip, I removed the spaghetti line from vacume reservoir that goes inside to knob. It does have a venturi vacume system, which gets it down to bout 18. I read somewhere 10 to 14 should be plenty ? I'll look tomorrow for make of unit. I've checked all servos & lines for leaks all ok. Thru dash valve , & everything will work at 22 and up with my hand pump !
Mikeehoff is offline   Reply With Quote
Old 05-29-2023, 09:28 PM   #4
Junior Member
Join Date: Sep 2017
Posts: 2
I'll order the new YH600 dash valve by motorcraft tomorrow , thanks skip
Mikeehoff is offline   Reply With Quote

cat, dash, door, doors, location

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
95 Windsor HVAC blend doors ronspradley Monaco Owner's Forum 18 09-06-2018 12:33 PM
Blend Door Location jbfan Ford Motorhome Chassis Forum 10 08-26-2016 06:23 AM
Fuel with E-10 or E-15 Ethanol Blend? Superslif General Discussion 24 07-27-2011 02:07 AM
Itasca Blend Door Doug360 Winnebago Industries Owner's Forum 2 08-29-2010 01:10 AM
Dino, Synthetic or Synt. Blend ? rvten Workhorse and Chevrolet Chassis Motorhome Forum 7 03-15-2005 07:13 AM

» Featured Campgrounds

Reviews provided by

All times are GMT -6. The time now is 09:18 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.