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 CHASSIS CLUB FORUMS > Ford Motorhome Chassis 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 06-22-2021, 02:25 PM   #1
Junior Member
 
Join Date: Jun 2020
Posts: 7
1994 Bounder f53 A/C evaporator access questions

1994 bounder ford f53 chassis AC Evaporator coil access
I'm wondering if there is a decent way to access the area where the evaporator coil is to see if it's dirty or not on my ford f53 chassis. turns on gets cold but eventually will stop engaging the clutch. even with it off and in on position ignition. I know about spacer issues and access to clutch assembly on my bounder is horrible. going to try shorting out low side pressure switch too when starts acting up. normally when hot out and will act up sooner when parked. I'd like to address everything else before I go for the spacers. I've even tried getting the unit to act up with engine on, then turn off and then to on position to see if clutch can be engaged with ac button on dash and will not. after awhile after having it off it will kick on again. checked for pressure all good holding vacuum too.

Right now I'm leaning towards:

1) Low side pressure switch
2) spacers in clutch assembly
3) clogged or dirty evaporator
4) temp sensor for freezing up evaporator and ac clutch relay. Just need to find out where those are!

Thanks in advance for any suggestions!
mnbullwinkle 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 06-22-2021, 04:41 PM   #2
Senior Member
 
House Husband's Avatar
 
Join Date: Mar 2009
Posts: 1,133
Your HVAC is manufactured by Denso. Access is through the carpeted panel in front of the passengers seat. Have fun finding the 4 screws in the carpet that hold the panel on.
You will need to release the refrigerant charge, remove the 2 AC hoses in the front of the firewall, then remove the lower half of the housing to get to the inlet side of the evaporator.

Richard
__________________
95 Bounder 32H F53
460/528 Stroker Engine
House Husband is offline   Reply With Quote
Old 06-22-2021, 11:42 PM   #3
Senior Member
 
chboone's Avatar


 
National RV Owners Club
Ford Super Duty Owner
Join Date: Sep 2010
Location: Horse Town USA, CA.
Posts: 3,514
If you can get to the air outlet side of the Evaporator I would try washing it out with water or one of these https://www.amazon.com/s?k=evaporato...s_ts-doa-p_1_4
before disconnecting the lines.
When is the last time the refrigerant charge was checked?
__________________
1999 35 ft. Dolphin 5350, F53, Banks System, 5 Stars Tune, Air Lift Air Bags, Koni Shocks, Blue OX TruCenter, TigerTrak track bars F&R, Roadmaster 1-3/4" rear auxiliary sway bar, 2004 F450 Lariat Pickup 6.0 Diesel Crew Cab DRW, 4X4, GVWR 15,000, Front GAWR 6,000, Rear GAWR 11,000, GCWR 26,000,1994 36ft Avion 5er, GVWR 13,700, 2,740 Pin Weight.
chboone is online now   Reply With Quote
Old 06-25-2021, 01:21 PM   #4
Junior Member
 
Join Date: Jun 2020
Posts: 7
Yes I had it checked last year and it was actually overcharged blows out really cold air but in hot days will just cycle off and blow outside air only can hear compressor cycle off and when I try to just press button on ac will not hear it engage. if I have it off for awhile on road eventually it will start again and work but for shorter and shorter amounts of time. Why I think we may have a low pressure sensor or clogged evaporator fins. icing up and causing issue not the spacer issue that normally is most likely culprit in the compressor clutch with units older in age.
mnbullwinkle is offline   Reply With Quote
Old 06-25-2021, 01:30 PM   #5
Senior Member
 
Xmcdog's Avatar
 
Join Date: Dec 2019
Location: Nova Scotia
Posts: 1,534
Sounds like the condenser is blocked. Especially if overcharged.

Often the rad, condenser, oil cooler etc is sandwiched together and dust, lint etc can form a mat between the coils blocking the airflow. To clean you may need to separate them and hose it down. A good coil cleaner will help.
__________________
Jeff and Annette Smith
04 Glendale Titanium 24E29 Fifth
2011 GMC Diesel 2500 HD
Xmcdog is online now   Reply With Quote
Old 06-25-2021, 02:28 PM   #6
Member
 
Join Date: Oct 2020
Posts: 89
The symptoms you are describing are typical of an excessive air gap on the compressor clutch. If you can identify the compressor manufacturer and model number (I bet it’s a Denso 10p20, but that’s just a wild uniformed guess) you can lookup the specification and measure with a set of feeler gauges. If out of spec, you can purchase a shim kit to get back within spec. Disassembling the clutch requires a puller tool, but does not require recovering the refrigerant.
Shadow5501 is offline   Reply With Quote
Reply

Tags
bounder, f53



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
Fleetwood dash A/C evaporator access jim427 Class A Motorhome Discussions 1 06-14-2020 03:31 PM
Questions about aftermarket under dash evaporator unit on the dash IamJerryP MH-General Discussions & Problems 6 05-11-2016 11:33 PM
Evaporator Coil Replacement 05 MADP 4304 Robert M Newmar Owner's Forum 11 02-27-2009 02:51 AM


All times are GMT -6. The time now is 12:47 AM.


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