Mysterious leak; appears to be coming from a small opening. What is it? - JeepForum.com
 5Likes
  • 2 Post By 97Mule
  • 2 Post By DJCantonGA
  • 1 Post By Uniblurb
 
LinkBack Thread Tools
post #1 of 14 Old 05-23-2019, 06:51 PM Thread Starter
escher24
Registered User
 
escher24's Avatar
2001 WJ 
 
Join Date: May 2017
Posts: 12
Garage
Mysterious leak; appears to be coming from a small opening. What is it?

I finally got my 2001 Jeep Grand Cherokee (WJ) home, and I've been working on fixing a lot of its basic functionality problems. However, after I filled up the transmission fluid, I saw a leak coming from under the car. After placing plain white printer paper down there and carefully sniffing, it seems like plain water rather than transmission fluid. I'm not a car expert at all, but I'm thinking it's some kind of coolant/radiator leak. I tracked the source of the leak to a mysterious opening under the hood (pic included). I have no idea why there's an opening here, nor what it does or why it's important. I feel like there's a hose or something that's supposed to attach to it. What's going on here, and is the leak anything to worry about?

Attached Thumbnails
leaky hole.jpg  
escher24 is offline  
Sponsored Links
Advertisement
 
post #2 of 14 Old 05-23-2019, 07:20 PM
97Mule
Web Wheeler
 
97Mule's Avatar
2002 WJ 
 
Join Date: Jul 2013
Location: Splendora
Posts: 1,816
Garage
AC condensation drain..... Normal .
Uniblurb and jayheats like this.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
97Mule is offline  
post #3 of 14 Old 05-23-2019, 08:03 PM Thread Starter
escher24
Registered User
 
escher24's Avatar
2001 WJ 
 
Join Date: May 2017
Posts: 12
Garage
Quote:
Originally Posted by 97Mule View Post
AC condensation drain..... Normal .

Good to know. Thank you!
escher24 is offline  
 
post #4 of 14 Old 05-24-2019, 03:56 AM
JeppeWJ
Registered User
1999 WJ 
 
Join Date: Jul 2018
Location: Göteborg
Posts: 104
Hey I was looking for the ac-drain on my car! Is that the 4.7 engine?
JeppeWJ is offline  
post #5 of 14 Old 05-24-2019, 06:43 AM
97Mule
Web Wheeler
 
97Mule's Avatar
2002 WJ 
 
Join Date: Jul 2013
Location: Splendora
Posts: 1,816
Garage
Thats the 4.0...... The ac drain is in the same area on all wj's!


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
97Mule is offline  
post #6 of 14 Old 05-24-2019, 07:16 AM
DJCantonGA
Registered User
 
DJCantonGA's Avatar
2004 WJ 
 
Join Date: Mar 2018
Posts: 91
Your blinker fluid is leaking out
97Mule and OldGreyV8 like this.
DJCantonGA is offline  
post #7 of 14 Old 05-24-2019, 02:54 PM
Mofugly13
Member
1999 WJ 
 
Join Date: Jun 2018
Location: San Francisco
Posts: 173
You should get yourself a short length of tube that will slip over that to drain it a little further from the firewall. I think it’s 1/2”. A 6” piece of vacuum line or coolant line will do it.

The reason I suggest this is that the water that drips out of that tube can blow back to the firewall and end up collecting on the passenger side floor. Mine was creating quite a puddle. I thought it was my sunroof drain line because those seem to be a common cause of water on the floor. So I did all the recommended fixes for that and still had water collecting.

Then I ran across an obscure post here on the forum that said to route that drain a little further from the firewall, so I did, and that did the trick.


Sent from my iPad using Tapatalk
Mofugly13 is offline  
post #8 of 14 Old 05-24-2019, 03:07 PM
Uniblurb
Web Wheeler
 
Uniblurb's Avatar
2004 WJ 
 
Join Date: Jan 2012
Location: Central
Posts: 9,803
Lol DJCantonGA.

Below is a video I've watched before of a guy cleaning out his WJ AC drain on the outside of the firewall. Pretty extreme to run a hose in the HVAC box then get under there to take a video under a waterfall! Ha!

https://www.youtube.com/watch?reload=9&v=iMYOZ__HoBg

96 4.0 ZJ Laredo, 2004 4.7L WJ Limited, 96 4.0 XJ (son's)


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
&
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.
Uniblurb is offline  
post #9 of 14 Old 05-24-2019, 03:58 PM
DJCantonGA
Registered User
 
DJCantonGA's Avatar
2004 WJ 
 
Join Date: Mar 2018
Posts: 91
I put a piece of 90° rubber tubing on mine and the turn down part goes 6" or so. I heard where sometimes the wind would blow the condensate back inside, possibly causing a leak.

@Uniblurb , I saw that video! Good on him, but I'm not going that far! I used a small pick tool (carefully) to make sure there wasn't any debris inside though.
Attached Thumbnails
20190524_175111.jpg  
DJCantonGA is offline  
post #10 of 14 Old 05-24-2019, 10:21 PM
Uniblurb
Web Wheeler
 
Uniblurb's Avatar
2004 WJ 
 
Join Date: Jan 2012
Location: Central
Posts: 9,803
@DJCantonGA , that looks like a pretty good fix to put a 90* rubber hose on the end of the AC drain. I too have heard the airflow can push the water back on the outside of the drain tube then if your seal is bad at the firewall the water will end up on the passenger floor.

Bet the below Dayco 80394 hose with 90 degree elbow would work and it's 1/2" ID. It sells a little cheaper at Advance and Autozone for $8-9.

https://www.amazon.com/Dayco-80394-M.../dp/B000C0YPZ4

We're pretty lucky we can even get to the end of the drain tube on our WJ's. Check out this write-up I did for my ZJ to route the AC drain water through the wheel well and used the above Dayco hose. Real nice of Jeep to bury it in the frame so water will rust the frame out!

https://www.jeepforum.com/forum/f13/...te-up-3412082/
DJCantonGA likes this.

96 4.0 ZJ Laredo, 2004 4.7L WJ Limited, 96 4.0 XJ (son's)


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
&
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.
Uniblurb is offline  
post #11 of 14 Old 05-25-2019, 07:48 AM
DJCantonGA
Registered User
 
DJCantonGA's Avatar
2004 WJ 
 
Join Date: Mar 2018
Posts: 91
Quote:
Originally Posted by Uniblurb View Post
@DJCantonGA , that looks like a pretty good fix to put a 90* rubber hose on the end of the AC drain. I too have heard the airflow can push the water back on the outside of the drain tube then if your seal is bad at the firewall the water will end up on the passenger floor.

Bet the below Dayco 80394 hose with 90 degree elbow would work and it's 1/2" ID. It sells a little cheaper at Advance and Autozone for $8-9.

https://www.amazon.com/Dayco-80394-M.../dp/B000C0YPZ4

We're pretty lucky we can even get to the end of the drain tube on our WJ's. Check out this write-up I did for my ZJ to route the AC drain water through the wheel well and used the above Dayco hose. Real nice of Jeep to bury it in the frame so water will rust the frame out!

https://www.jeepforum.com/forum/f13/...te-up-3412082/
Ha, I found your thread about the ZJ ac drain when researching the cause of my WJ leak! One of the reasons I joined JF!

That hose you linked looks just like what I used. I had one in the shop that fit. It was a tight squeeze on the original spout, and I just sealed around it with silicone. My leak turned into a 3 month nightmare. My love for the WJ kept me going at it until I finally found the source (passenger side moisture/vapor barrier wasn't sealed at the bottom, allowing water to intrude over the door seal).

But now I have new seals all around, a resealed windshield (it was leaking, but not bad), and new window trim lol.

They made the ac drain a bear to get at on your ZJ!
DJCantonGA is offline  
post #12 of 14 Old 05-25-2019, 09:56 AM
blueseasons
Registered User
2000 WJ 
 
Join Date: Oct 2015
Location: Santa Cruz
Posts: 519
JeppeWJ: If you find yours let me know. I have been looking for my AC drain for 4 years and cant find it. I'm not stupid or blind. If it was easy, I would have seen it by now. 2000/4.7
blueseasons is offline  
post #13 of 14 Old 05-25-2019, 10:01 AM
JeppeWJ
Registered User
1999 WJ 
 
Join Date: Jul 2018
Location: Göteborg
Posts: 104
blueseasons .. wow sounds like it's not easily accessible on our 4.7 engines .. Now I know where to look and will let you know if I find it .. lol
JeppeWJ is offline  
post #14 of 14 Old 05-25-2019, 09:59 PM
97Mule
Web Wheeler
 
97Mule's Avatar
2002 WJ 
 
Join Date: Jul 2013
Location: Splendora
Posts: 1,816
Garage
When you guys "find" the drain , just slip a scrap 90* hose on it.
There usually free at the bone yard!


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
97Mule is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
My wife’s Renegade has a small leak... so they give her this as a loaner... Photoweborama Grand Cherokee General Discussion 4 04-17-2019 09:27 PM
My JK Roof Leak Saga rsurran JK Wrangler Technical Forum 26 01-02-2019 08:07 AM
small leak on front axle drive shaft by wheel Tony01 YJ Wrangler Technical Forum 9 09-13-2018 08:18 AM
Small Evap Leak bow6x6 WJ Grand Cherokee Forum 9 05-15-2018 09:09 AM
small gas leak sman26 Jeep CJ Forum 10 12-05-2017 05:09 AM

Posting Rules  
You may post new threads
You may 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 On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome