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 07-16-2019, 07:26 PM   #1
Senior Member
 
Shiba_Alex's Avatar
 
Join Date: May 2018
Posts: 181
Should something be plugged into here?

I was investigating the a/c system for a vacuum leak and found this barb connector without a hose connected to it. I was wondering if there is anything supposed to be attached to it. It is on the front passenger side above the vacuum accumulator. Not sure if it is tied together or not but sometimes when I shut off the engine, I hear a banging sound that seems like it is coming from the passenger side outside.

Thanks in advance.
Click image for larger version

Name:	IMG_1161.JPG
Views:	18
Size:	402.6 KB
ID:	253479
__________________

__________________
Alex and co-pilot Shiba Inu Kuja
2001 Winnebago Adventurer 37G pulling a 2010 GMC Terrain
Fulltiming since 6/1/19
Shiba_Alex 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 07-16-2019, 07:31 PM   #2
Junior Member
 
Join Date: Jun 2019
Posts: 13
It looks like the the drain for the condensation from your AC. As long as thatís open to the ground should be ok. Iím guessing the sound is unrelated..
__________________

ca69708 is offline   Reply With Quote
Old 07-16-2019, 07:34 PM   #3
Junior Member
 
Join Date: Jun 2019
Posts: 13
I would look at the exhaust while someone else shuts the engine off. There is often extra vibration as the engine comes to a stop and could be a bad mount or something close coming in contact during that extra vibration.
ca69708 is offline   Reply With Quote
Old 07-16-2019, 07:43 PM   #4
Senior Member
 
Shiba_Alex's Avatar
 
Join Date: May 2018
Posts: 181
Ok. Didnít think about the drain. That kinda puts me back at square one with the a/c system but Iíll keep taking a look at it. The sound doesnít happen all the time and I was thinking it was happening when I would turn off the engine with the a/c on. Might just be a coincidence.
__________________
Alex and co-pilot Shiba Inu Kuja
2001 Winnebago Adventurer 37G pulling a 2010 GMC Terrain
Fulltiming since 6/1/19
Shiba_Alex is offline   Reply With Quote
Old 07-16-2019, 07:51 PM   #5
Junior Member
 
Join Date: Jun 2019
Posts: 13
Does the ac work right now and the only symptom is the bang? Or are there other symptoms from the ac?
ca69708 is offline   Reply With Quote
Old 07-16-2019, 07:57 PM   #6
Senior Member
 
Shiba_Alex's Avatar
 
Join Date: May 2018
Posts: 181
The usual defaults to defrost mode. Iíve gone through the other posts and checked to see that all of the vacuum lines are attached with the exception of the accumulator in the passenger wheel well. I kinda looked at it and the connections seem to be on there but I will take the accumulator off and check.
__________________
Alex and co-pilot Shiba Inu Kuja
2001 Winnebago Adventurer 37G pulling a 2010 GMC Terrain
Fulltiming since 6/1/19
Shiba_Alex is offline   Reply With Quote
Old 07-16-2019, 09:59 PM   #7
Senior Member
 
Shiba_Alex's Avatar
 
Join Date: May 2018
Posts: 181
I looked under the dash at the a/c controls to see if it wouldnít be a loose vacuum hose there but now I see another wire just dangling. Any idea what this might go to? Itís in the same wire bundle that goes to the climate controls.
Click image for larger version

Name:	IMG_1164.JPG
Views:	12
Size:	466.4 KB
ID:	253493
__________________
Alex and co-pilot Shiba Inu Kuja
2001 Winnebago Adventurer 37G pulling a 2010 GMC Terrain
Fulltiming since 6/1/19
Shiba_Alex is offline   Reply With Quote
Old 07-18-2019, 09:56 AM   #8
Senior Member
 
Join Date: Sep 2015
Location: Houston, TX
Posts: 160
I believe the ac doors (defrost, forward vent, footwell, recirculating) are vacuum operated. When you shut off engine there is no more engine supplied vacuum. Perhaps one of those doors are slamming open (or closed). Perhaps try operating each door when engine is running and see if it can be duplicated. It could be a broken/faulty vacuum servo. There should be a vacuum canister which holds vacuum for a while even after the engine is shut off. A leak could cause doors to return to ďrelaxedĒ position when vacuum supply is lost. Yesterday I found a small rubber nipple at my vacuum canister severely degraded and probably leaking. A 2 inch piece of 1/4 inch vacuum hose fixed it. Good luck. Let us know what you found.
Fugitive861 is offline   Reply With Quote
Old 07-18-2019, 11:49 AM   #9
Senior Member
 
Join Date: Sep 2015
Location: Houston, TX
Posts: 160
This is where I, and several others have found vacuum leaks due to aged rubber hose nipple.
Attached Thumbnails
Click image for larger version

Name:	776BF6B9-C887-463B-A944-5CFD9C3A6598.jpeg
Views:	10
Size:	42.5 KB
ID:	253683  
Fugitive861 is offline   Reply With Quote
Old 07-18-2019, 12:00 PM   #10
Senior Member
 
stew1's Avatar
 
Join Date: Sep 2013
Location: dickinson, tx
Posts: 204
On the back of my switch there were several vacuum lines on that plugged into was off when my ac went to defrost
stew1 is offline   Reply With Quote
Old 07-18-2019, 02:22 PM   #11
Senior Member
 
Shiba_Alex's Avatar
 
Join Date: May 2018
Posts: 181
Hey guys. I have been a little under the weather so the troubleshooting took a back seat for a minute. I still need to look at the accumulator in front of the passenger tire. I noticed that there is vacuum on the spherical accumulator on both sides and there is a vacuum on the black tube going up to the back of the dash controls. I donít know about the other tubes behind the controls.
__________________
Alex and co-pilot Shiba Inu Kuja
2001 Winnebago Adventurer 37G pulling a 2010 GMC Terrain
Fulltiming since 6/1/19
Shiba_Alex is offline   Reply With Quote
Old 07-18-2019, 05:43 PM   #12
Senior Member
 
Shiba_Alex's Avatar
 
Join Date: May 2018
Posts: 181
I think I am narrowing it down. The backside of the dash knob has a rubber mounting that the tubes go into. I could hear air leaking when I had the a/c on. I pushed the rubber housing into the dash and that changed the sound of the hiss. I went and got some vacuum tube and cut the tube off of the rubber housing and reinserted each tube into the holes on the back of the dash controls.
Click image for larger version

Name:	IMG_0018.jpg
Views:	9
Size:	290.2 KB
ID:	253731
Click image for larger version

Name:	IMG_1170.JPG
Views:	12
Size:	398.3 KB
ID:	253732

I tested the system and nothing. Just for giggles, there was a motor next to the air box that the yellow tube was plugged into. I had noticed that the yellow tube did not have vacuum before so I wanted to test it and see. It still did not but when I pushed the lever in on the motor air started to come out of the dash vents.
Click image for larger version

Name:	IMG_1171.JPG
Views:	10
Size:	503.5 KB
ID:	253733

Now I need to figure out why the yellow tube is not getting vacuum. I checked the output at the dash co trip and there is vacuum. It most likely the tube itself.
__________________
Alex and co-pilot Shiba Inu Kuja
2001 Winnebago Adventurer 37G pulling a 2010 GMC Terrain
Fulltiming since 6/1/19
Shiba_Alex is offline   Reply With Quote
Old 07-18-2019, 05:47 PM   #13
Senior Member
 
Shiba_Alex's Avatar
 
Join Date: May 2018
Posts: 181
Right after posting this I took the yellow tube out and inspected it. No wonder why it was loosing vacuum. THEREíS YOUR SIGN!!

Click image for larger version

Name:	IMG_1172.JPG
Views:	12
Size:	263.4 KB
ID:	253735
__________________
Alex and co-pilot Shiba Inu Kuja
2001 Winnebago Adventurer 37G pulling a 2010 GMC Terrain
Fulltiming since 6/1/19
Shiba_Alex is offline   Reply With Quote
Old 07-18-2019, 05:56 PM   #14
Senior Member
 
Shiba_Alex's Avatar
 
Join Date: May 2018
Posts: 181
I patched the tube with some other vacuum tube I had and SUCCESS!! I now have work a/c vents again.

Thanks to everyone for pointing me in the right direction.
__________________

__________________
Alex and co-pilot Shiba Inu Kuja
2001 Winnebago Adventurer 37G pulling a 2010 GMC Terrain
Fulltiming since 6/1/19
Shiba_Alex is offline   Reply With Quote
Reply



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
12 volt draining while plugged into shore power larry123 Class A Motorhome Discussions 4 01-29-2012 12:23 PM
Radio plugged into 110 volts Railroader Newmar Owner's Forum 4 11-12-2011 05:52 PM
batteries drain when plugged into shore power caberto RV Systems & Appliances 8 08-19-2010 01:03 PM
No 12VDC when plugged into shore power RV 4 2 National RV Owner's Forum 4 10-07-2009 09:45 AM
update-plugged into 50 amp, board reads 30 Motorhome05 Winnebago Industries Owner's Forum 5 09-23-2006 06:22 AM

» Featured Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 10:40 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.