Remove heater core? - JeepForum.com
 
LinkBack Thread Tools
post #1 of 11 Old 05-29-2013, 01:49 PM Thread Starter
GatorsUF
Registered User
1989 YJ Wrangler 
 
Join Date: Jan 2008
Location: Sarasota, FL
Posts: 349
Remove heater core?

I was curious if there is any good info on how to remove the heater core from my YJ. I don't use it and it currently doesn't work. I'd like to have the extra room under my dash.

Is there an issue with removing it since it seems I would have a huge open hole under my dash from the hood vent.

I live in FL I don't need heat...I need AC but that is a whole other issue

GatorsUF is offline  
Sponsored Links
Advertisement
 
post #2 of 11 Old 05-29-2013, 02:12 PM
Reno72
Web Wheeler
 
Reno72's Avatar
1992 YJ Wrangler 
 
Join Date: Jan 2013
Location: Cardiff by the Sea - Glamis North
Posts: 1,326
You would have a hole above where the air comes in, a hole on the passenger side where the blower motor is, and a few holes where the studs go through the fire wall. Biggest problem would seem to be what to do with the air coming from the cowl vent.
You can do a search on removal, it's pretty easy but takes some wiggling to pull the whole housing out. If I remember it's just 4 nuts to remove on the firewall, three cables going to housing flaps, and the intake and outgoing water hoses, while I was fixing mine I just turned the water line going into the firewall and connected it where the water coming out of the heater core connects back to the rad.
Reno72 is offline  
post #3 of 11 Old 05-29-2013, 02:28 PM
Rproject
Registered User
1987 YJ Wrangler 
 
Join Date: Aug 2008
Location: Sandwich, IL
Posts: 2,759
Quote:
Originally Posted by Reno72 View Post
while I was fixing mine I just turned the water line going into the firewall and connected it where the water coming out of the heater core connects back to the rad.
Yup. Putting a fitting between the two hoses will create a loop and bypass the heater core. As for removal, I had to pull my duct work to change the heater core. What a PITA. 4 studs through the firewall for the blower motor, two hoses for the heater core plus a couple other fasteners for the duct work. One of the fasteners is on the driver's side of the valve cover. There are several good writeups on how to change the heater core. You can follow them and just not reverse the process. For the fresh air duct, it's up so high that it likely won't be in the way of anything after you pull the duct and you can probably just leave it behind.

1996 White ZJ
1987 Maroon YJ (sideways build)
1996 Forest Green XJ

The "sideways" build thread: http://www.jeepforum.com/forum/f22/r...hread-2164793/
Rproject is offline  
post #4 of 11 Old 05-29-2013, 02:47 PM
Luuca
Typical /f12 Hooligan
 
Luuca's Avatar
2005 LJ Wrangler 
 
Join Date: Apr 2012
Location: Corona
Posts: 4,574
Quote:
Originally Posted by GatorsUF View Post
I was curious if there is any good info on how to remove the heater core from my YJ. I don't use it and it currently doesn't work. I'd like to have the extra room under my dash.

Is there an issue with removing it since it seems I would have a huge open hole under my dash from the hood vent.

I live in FL I don't need heat...I need AC but that is a whole other issue
I rebuilt my heater box, new core etc. I used this thread from the CJ forums as a guide. It's chock full of great information. Also search heater core in the YJ forums for more threads.

http://www.jeepforum.com/forum/f8/cj...-heavy-975999/

91 YJ "Alice" 2.5L, AX5, 2.5" OME 36Rs, Revolvers, 32" Yoko ATs, 4.10 D30/35 Aussie Lockers F/R Busted Knuckles YJOTM never
05 LJ Rubicon "Ghost"

Luck Favours The Prepared
Luuca is offline  
post #5 of 11 Old 05-30-2013, 11:51 AM
phottomatt
Registered User
2010 JK Wrangler 
 
Join Date: Nov 2010
Location: Havertown
Posts: 333
I am dreading this as my blower is bad but required for the PA safety inspection (must have a working defroster). Thanks for the info.

2010 Flame Red Sahara, Rough Country stubby bumper/winch, Body Armor rock sliders, stiff spring mod and RC 2.5" series II spacer lift (~3.5" total lift), 33X12.5 Duratracs on 15" MB72s.
2007 Grand Cherokee Limited, Red Rock, 5.7L HEMI
phottomatt is offline  
post #6 of 11 Old 05-30-2013, 11:54 AM
Luuca
Typical /f12 Hooligan
 
Luuca's Avatar
2005 LJ Wrangler 
 
Join Date: Apr 2012
Location: Corona
Posts: 4,574
Quote:
Originally Posted by phottomatt View Post
I am dreading this as my blower is bad but required for the PA safety inspection (must have a working defroster). Thanks for the info.
You know what, it's not that bad really. A few bolts and some wrestling with it and you'll be OK. That thread I linked helped me a lot.

91 YJ "Alice" 2.5L, AX5, 2.5" OME 36Rs, Revolvers, 32" Yoko ATs, 4.10 D30/35 Aussie Lockers F/R Busted Knuckles YJOTM never
05 LJ Rubicon "Ghost"

Luck Favours The Prepared
Luuca is offline  
post #7 of 11 Old 05-30-2013, 01:55 PM
Reno72
Web Wheeler
 
Reno72's Avatar
1992 YJ Wrangler 
 
Join Date: Jan 2013
Location: Cardiff by the Sea - Glamis North
Posts: 1,326
It's sort of a PITA but only because it takes patience and a lot of wiggling. I have A/C and all the write-ups said I had to discharge it, I didn't, just unbolted it, moved it to the left, and pulled the heater housing. Getting it out was harder than getting it back in, only because it was hard to tell where and what it was hanging up on.
Reno72 is offline  
post #8 of 11 Old 05-30-2013, 02:16 PM
dcocch
Registered User
1989 YJ Wrangler 
 
Join Date: Jan 2012
Location: Minneapolis
Posts: 175
http://www.jeepforum.com/forum/f12/heater-core-219329/

I just did mine on Tuesday. I posted a pic on page 4 of where the bolts were on my 89, they were in different spots than the OP's pics.
dcocch is offline  
post #9 of 11 Old 06-01-2013, 04:26 PM
phottomatt
Registered User
2010 JK Wrangler 
 
Join Date: Nov 2010
Location: Havertown
Posts: 333
Yeah after I saw what all needs to come off from the cj link I went out and looked it over good with a much better understanding of what needs to be done and it doesn't look nearly as bad as I thought, thanks to the wisdom and Generosity's of the people from this forum. Chilton manual doesn't even have the right procedure.

2010 Flame Red Sahara, Rough Country stubby bumper/winch, Body Armor rock sliders, stiff spring mod and RC 2.5" series II spacer lift (~3.5" total lift), 33X12.5 Duratracs on 15" MB72s.
2007 Grand Cherokee Limited, Red Rock, 5.7L HEMI
phottomatt is offline  
post #10 of 11 Old 06-01-2013, 09:37 PM
Shadownwpa
Registered User
1991 YJ Wrangler 
 
Join Date: Oct 2011
Location: Sharon
Posts: 1,368
Garage
Important note... blaster and a light hand are needed when removing the nuts on the other side of the firewall. Just busted 3 of 4 off today when stripping my old tub (with a 1/4 drive ratchet)... the 4th was already off when I got to it or it might have sufferred the same fate... on the bright side the broken studs aren't too hard to rip out and replace with tacked bolts and washers.

http://www.jeepforum.com/forum/f22/shadownwpa-91ish-yj-build-thread-1857154/
Shadownwpa is online now  
post #11 of 11 Old 06-02-2013, 08:39 AM
phottomatt
Registered User
2010 JK Wrangler 
 
Join Date: Nov 2010
Location: Havertown
Posts: 333
Quote:
Originally Posted by Shadownwpa View Post
Important note... blaster and a light hand are needed when removing the nuts on the other side of the firewall. Just busted 3 of 4 off today when stripping my old tub (with a 1/4 drive ratchet)... the 4th was already off when I got to it or it might have sufferred the same fate... on the bright side the broken studs aren't too hard to rip out and replace with tacked bolts and washers.
Thanks for the heads up.

2010 Flame Red Sahara, Rough Country stubby bumper/winch, Body Armor rock sliders, stiff spring mod and RC 2.5" series II spacer lift (~3.5" total lift), 33X12.5 Duratracs on 15" MB72s.
2007 Grand Cherokee Limited, Red Rock, 5.7L HEMI
phottomatt 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









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




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



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