Changing Heater Core on 96-98 Mustang - Forums at Modded Mustangs
Reply
 
LinkBack Thread Tools
post #1 of 71 Old November 18th, 2007, 04:33 PM Thread Starter
MM Fanatic
 
ujslost's Avatar
 
Join Date: Mar 2007
Location: Albertville, AL
Posts: 3,921
Blog Entries: 1
   
iTrader: 1 reviews
Send a message via AIM to ujslost
Changing Heater Core on 96-98 Mustang

This is my personal experience only. Your may differant from vehicle to vehicle. This is just a generalization of changing the heater core on the 96-98 mustang gt. I would think the 94,95 & 99-04 would be very similar if not the same. I have included picture for the areas I think deserve the most attention. Any process of the removal not pictured should be pretty simple and easy to figure out on your own. You WILL have to evacuate the Air Conditioning system.

Here is a list of tools I used.
Small cordless drill w/ 1/4 socket adapter.
Deep and shallow set of 1/4 inch metric sockets.
Flathead screw drive and Pry bar
1/4 inch swivel and extensions
Hose clamp pliers
AC line and or fuel line disconnect tools (2 differant sizes)
2 Gallons of Antifreeze/Coolant (Green)
1 New Heater core.

1. Evacuate the air conditioning system.

2. Remove negative battery post.

3. Start off by removing the shifter knob,boot and bezel and shifter handle. I suggest that you even remove the shifter if possible. This will give you more room to move the dash towards the seats.

4. Remove the bezel that surrounds the stereo, hvac controls and center vent registers. No need to remove the stereo or cd player from this bezel, just unplug all the connectors from the back of them.

5. Remove the center console. There are 2 bolts inside the console that hold it to the floor boards, and then there are 2 where you removed the shifter bezel that screws the console to the dash. For ease of removal and installation I suggest to put the E-brake in its highest postion you can get it this will ease getting the ebrake boot off.

6. Remove the plastic piece of the dash located just below the steering wheel, it has 2 8mm bolts at the bottom and gently pry it off from its retaining tabs on the upper section. Behind this is another metal piece it has a few 8mm bolts holding it in also. Remove it.

7. Remove the door sill plates and the kick panels from both passenger and driver's side of the car. These pretty much pop out.

8. On the passenger side you have a few wire connectors that need disconnected. Including the blower motor. Here is a picture of the passenger side. Drivers side is similar although there is one connector that has a 10mm bolt holding it together, just unscrew that bolt.


9. Working under the steering column. Located on the left of the column there is your ignition switch harness, it has a 7mm bolt that holds it in. Remove harness. Located on the right side of the steering column there are 3 wire connectors secured to a piece of metal. Unplug all 3. Then look towards the firewall and up on the trans tunnel. You see the blue box? (Located behind the carpet pull carpet down out of the way) That is your airbag module, there are 2 connectors going into it. Disconnect those and remove both of the green 8mm bolts.

10. After you have the carpet pulled down from around the trans tunnel, you will see on the drivers side 2 green 8mm bolts which you should have removed in the previous step. Look just right of those and see the 3 gold colored 8mm bolts with huge washers on them. Remove those also. This step is the same on the passenger side except there is only 1 green 8mm bolt and the gold bolts are located to the left of the green bolt (towards the rear of the car).

11.Working in the drivers floor board. look under the steering column and find the 4 nuts that hold it up. Remove the 4 nuts. I believe they are 13mm. (13mm deepwell socket is handy here with an extension) Let the steering column down easily. When you have it down enough that you can see the top of the column, you will notice a wire connector there, disconnect it.

12. Working in the passenger side floor board. Look where you disconnected those wiring plugs. There is an 8mm bolt take that out. Then let your glove box down where you can see behind it. Look just above where you took the 8mm bolt out, but behind the dash hidden. There is another 8mm bolt. Remove it also. Here is a pic of the lower 8mm bolt. You will see the hidden one once you pull the glove box down.


13. Working in the drivers floor board. On this side your gonna pretty much do what you just done on the passenger side with a few exceptions. The lower bolt has a 15mm nut on it, remove it. and Look above that one hidden behind the dash, there is another 8mm bolt. Remove it. You might need a 6 inch 1/4 inch extension for this one.

14.Working under the hood on the passenger side. Place drain pan under car where your going to disconnect the heater hoses from the heater core. Disconnect heater hoses. (Replace hose clamps with new ones when reinstalling). Using your fuel line/AC disconnect tools disconnect the evaporator core lines, and the line on the dryer (3 connections total)
Here is a picture of the area your working in afterwards.


15. Remove this vaccum line.


16. Notice the bracket that the dryer is in. There is a 10mm nut on the front of the bracket, remove that nut and the remove the dryer and set it aside. Now you can see there are 2 10mm nuts holding that bracket to the firewall, remove these and set bracket aside. Where you removed the bracket you should see 2 studs sticking out of the firewall still. Remove the one on the left. Then using an 11mm socket remove the nut on the stud located to the right and under the heater core hoses. This stud will not come out it is part of the evaporator core box. Just remove the 11mm nut as shown.


17. Working inside vehicle. Using a prybar or flat head screw driver pry the defrost vent register out of place. You will see 3 8mm bolts located where you removed the register. Remove these bolts. Your dash should now be fully unbolted.

18. Using a friend. Both persons located on each side of the dash. Lift the dash upwards and pull it back in sorta a rolling motion. Setting it as far back as possible on the seats. Mainly on the passenger side since this is where you will be spending the rest of your time. Becareful not to pull anywires or vaccum hoses. Your dash should now look like this.


19. Disconnect this vaccum connection. To keep from tearing it up and give you alittle more room to work behind the dash.


20. There you have finally gotten to that damn box that holds your leaking heater core! Now you have to either get it out or back off the firewall enough to get the heater core out.

21. No you see 2 rusty brackets that hold the evaporator/heatercore box to the firewall from the inside. These are held on by 10mm bolts. Remove these.


22. Now work the box back off the firewall as far as possible. I couldnt get mine back but about 4 or 5 inches on the passenger side. For some reason I couldnt get the driverside to move back much at all.

23. See in the picture the 2 screws that are highlighted. 2-10mm Bolts. Remove these.


24. Now that you have those 2 bolts out use a pry bar and pry up on the plastic cover that you just unbolted until you can reach in and pull the heater core out. If you dont have enough room. Work the evaorator core box back of the firewall alittle further.


.Replace with new heater core! Installation is reverse of removal!!!
Refill with proper ammount of coolant and water mixture, and recharge AC system.
Good Luck and be patient its not that bad.

1986 Mustang GT t-top time piece!

Last edited by Drgnracin72; November 21st, 2007 at 12:39 PM.
ujslost is offline  
Sponsored Links
Advertisement
 
post #2 of 71 Old November 18th, 2007, 05:09 PM
Like a Boss
 
8t6gt's Avatar
 
Join Date: Apr 2007
Location: Gods country. Nordern Michigan eh
Posts: 22,876
                     
iTrader: 2 reviews
Nice Udge see it still hasnet got any easyier
8t6gt is offline  
post #3 of 71 Old November 18th, 2007, 05:43 PM
Hardcore Enthusiast
 
Casper98GT's Avatar
 
Join Date: Aug 2005
Location: NEW HAMPSHIRE
Posts: 2,419
 
iTrader: 0 reviews
Send a message via AIM to Casper98GT Send a message via Yahoo to Casper98GT
Thumbs up Good job

Good job John. I say "sticky" this shit, the dude worked hard on this writeup.

1995 SVT Mustang Cobra. Stock...
2006 Mitsu Evo MR full bolt on with FP Green 500awhp
1992 LX 69k miles, ON3 70mm single turbo
2009 Toyota Camry SE DD

Ex:Toyota/Ford tech
Marine Machinery Technician, Department of Defense.

Casper98GT is offline  
post #4 of 71 Old November 18th, 2007, 06:41 PM
Proud American
 
MustangMatt96GT's Avatar
 
Join Date: Dec 2006
Location: Lakewood, CO, Currently in Long Beach CA
Posts: 11,288
             
iTrader: 4 reviews
Send a message via AIM to MustangMatt96GT
Good work! ANd I say Stickey Aswell!

I just hope i dont have to do that one anytime soon!

BTW great Pictures!

RIP Travis Billings


1996 Mustang GT - Racecar
1995 Mustang GT - Daily Driver
Special Thanks to:
PoorMan Motorsports Full Parts Supply
MIA Motorsports For any Chassis Related Work or Drag Wings

25.3 SFI Chassis Build


Never Lift Racecars
MustangMatt96GT is offline  
post #5 of 71 Old November 18th, 2007, 06:55 PM Thread Starter
MM Fanatic
 
ujslost's Avatar
 
Join Date: Mar 2007
Location: Albertville, AL
Posts: 3,921
Blog Entries: 1
   
iTrader: 1 reviews
Send a message via AIM to ujslost
Thanks guys I appreciate it. I was really dreading doing the heatercore. It wasnt as bad as I thought it would be though. Had it all tore apart in about 2 hours last night, then got the AC removal tools out this morning at 8:30 and had the majority of it back in by 10:30. I flushed the overflow/fill tank and bypassed the new heater core, and flushed the system out with water a few times before I connected it back to the new heater core. That way I could keep all that crap out of the new core.

1986 Mustang GT t-top time piece!
ujslost is offline  
post #6 of 71 Old November 18th, 2007, 06:56 PM
MM Fanatic
 
mdvaldosta's Avatar
 
Join Date: Aug 2005
Location: Valdosta, GA
Posts: 3,940
 
iTrader: 0 reviews
Portable Heater

That... looked like a b*tch. Nice write-up, no doubt. +Rep to you.

Personally, that's such difficult work maybe I'd install a portable heater under the seat or something instead
mdvaldosta is offline  
post #7 of 71 Old November 18th, 2007, 06:58 PM
Proud American
 
MustangMatt96GT's Avatar
 
Join Date: Dec 2006
Location: Lakewood, CO, Currently in Long Beach CA
Posts: 11,288
             
iTrader: 4 reviews
Send a message via AIM to MustangMatt96GT
No sticky Joe?

RIP Travis Billings


1996 Mustang GT - Racecar
1995 Mustang GT - Daily Driver
Special Thanks to:
PoorMan Motorsports Full Parts Supply
MIA Motorsports For any Chassis Related Work or Drag Wings

25.3 SFI Chassis Build


Never Lift Racecars
MustangMatt96GT is offline  
post #8 of 71 Old November 18th, 2007, 10:00 PM
Enthusiast
 
k2boarder3187's Avatar
 
Join Date: Aug 2006
Location: CT
Posts: 503
 
iTrader: 0 reviews
sticky this shittttt

2003 EVO 8
The shop built motor, Precision 6262 w/.82 hotside, tial 44mm wg, Buschur RACE 4" FMIC, Kelford 272s etc

524whp @25psi on straight pump gas.
640whp@33psi Pump+meth
Race gas number soon.
TheShopCt.com
k2boarder3187 is offline  
post #9 of 71 Old November 18th, 2007, 10:20 PM
MM Elder/Retired Site Mod
 
Dennis's Avatar
 
Join Date: Sep 2006
Location: SWMO
Posts: 9,355
Blog Entries: 2
                     
iTrader: 0 reviews
yea nice wirte up i say sticky and if i ever have to do this im comming over to your place with some free beer and maybe a hooker as a bribe



Quote:
Originally Posted by mcqueen View Post
I can shit a human sized target at 15 feet
Dennis is offline  
post #10 of 71 Old November 18th, 2007, 10:53 PM Thread Starter
MM Fanatic
 
ujslost's Avatar
 
Join Date: Mar 2007
Location: Albertville, AL
Posts: 3,921
Blog Entries: 1
   
iTrader: 1 reviews
Send a message via AIM to ujslost
bring it on man

1986 Mustang GT t-top time piece!
ujslost is offline  
post #11 of 71 Old November 18th, 2007, 10:55 PM Thread Starter
MM Fanatic
 
ujslost's Avatar
 
Join Date: Mar 2007
Location: Albertville, AL
Posts: 3,921
Blog Entries: 1
   
iTrader: 1 reviews
Send a message via AIM to ujslost
oh yeah thanks for the reputation JOE.
Anyone who liked the write up click on my scales under my name and leave rep for me.

1986 Mustang GT t-top time piece!
ujslost is offline  
post #12 of 71 Old November 18th, 2007, 11:42 PM
The Hammer
 
G.T. Rags's Avatar
 
Join Date: Mar 2007
Location: Zip's Bubble
Posts: 14,276
                     
iTrader: 1 reviews
this needs to be a sticky.........

bump it to death until it is



Quote:
Originally Posted by TheUNZippee! View Post
I would eat the peanuts out of her shit

Car Salesman Club - The Hammer
ModdedMustangs Conspiracy Group: President
G.T. Rags is offline  
post #13 of 71 Old November 19th, 2007, 12:02 AM
Proud American
 
MustangMatt96GT's Avatar
 
Join Date: Dec 2006
Location: Lakewood, CO, Currently in Long Beach CA
Posts: 11,288
             
iTrader: 4 reviews
Send a message via AIM to MustangMatt96GT
Stickey!

I have PM about it already!

And Rags, get that purple car off of there, and show the DFG one!

RIP Travis Billings


1996 Mustang GT - Racecar
1995 Mustang GT - Daily Driver
Special Thanks to:
PoorMan Motorsports Full Parts Supply
MIA Motorsports For any Chassis Related Work or Drag Wings

25.3 SFI Chassis Build


Never Lift Racecars
MustangMatt96GT is offline  
post #14 of 71 Old November 21st, 2007, 12:01 AM Thread Starter
MM Fanatic
 
ujslost's Avatar
 
Join Date: Mar 2007
Location: Albertville, AL
Posts: 3,921
Blog Entries: 1
   
iTrader: 1 reviews
Send a message via AIM to ujslost
bump

1986 Mustang GT t-top time piece!
ujslost is offline  
post #15 of 71 Old November 21st, 2007, 12:02 AM
Proud American
 
MustangMatt96GT's Avatar
 
Join Date: Dec 2006
Location: Lakewood, CO, Currently in Long Beach CA
Posts: 11,288
             
iTrader: 4 reviews
Send a message via AIM to MustangMatt96GT
STICKEY THIS!!

another PM sent to authority!

RIP Travis Billings


1996 Mustang GT - Racecar
1995 Mustang GT - Daily Driver
Special Thanks to:
PoorMan Motorsports Full Parts Supply
MIA Motorsports For any Chassis Related Work or Drag Wings

25.3 SFI Chassis Build


Never Lift Racecars
MustangMatt96GT is offline  
post #16 of 71 Old November 21st, 2007, 12:04 AM
Enthusiast
 
Join Date: Jul 2006
Location: Denver co
Posts: 521
 
iTrader: 0 reviews
Send a message via Yahoo to gtdan
bump
gtdan is offline  
post #17 of 71 Old November 21st, 2007, 12:28 AM Thread Starter
MM Fanatic
 
ujslost's Avatar
 
Join Date: Mar 2007
Location: Albertville, AL
Posts: 3,921
Blog Entries: 1
   
iTrader: 1 reviews
Send a message via AIM to ujslost
STICKY PLEASE! The ppl asked for it, and they got the write up, now they want a sticky. Help us out here mods.

1986 Mustang GT t-top time piece!
ujslost is offline  
post #18 of 71 Old November 21st, 2007, 12:36 AM
Proud American
 
MustangMatt96GT's Avatar
 
Join Date: Dec 2006
Location: Lakewood, CO, Currently in Long Beach CA
Posts: 11,288
             
iTrader: 4 reviews
Send a message via AIM to MustangMatt96GT
I dont even know who the 96-98 mods are, but sometimes i think we need a permenate one.

RIP Travis Billings


1996 Mustang GT - Racecar
1995 Mustang GT - Daily Driver
Special Thanks to:
PoorMan Motorsports Full Parts Supply
MIA Motorsports For any Chassis Related Work or Drag Wings

25.3 SFI Chassis Build


Never Lift Racecars
MustangMatt96GT is offline  
post #19 of 71 Old November 21st, 2007, 04:13 AM
The Hammer
 
G.T. Rags's Avatar
 
Join Date: Mar 2007
Location: Zip's Bubble
Posts: 14,276
                     
iTrader: 1 reviews
Quote:
Originally Posted by MustangMatt96GT View Post
Stickey!

I have PM about it already!

And Rags, get that purple car off of there, and show the DFG one!
its not purple, its dark satin green......

my car is right next to it BTW


Quote:
Originally Posted by TheUNZippee! View Post
I would eat the peanuts out of her shit

Car Salesman Club - The Hammer
ModdedMustangs Conspiracy Group: President
G.T. Rags is offline  
post #20 of 71 Old November 21st, 2007, 04:34 AM
It's called a buggy
 
BWAL's Avatar
 
Join Date: Nov 2006
Location: Clothes Hamper
Posts: 28,395
Blog Entries: 2
                     
iTrader: 4 reviews
awesome write up man



'65 Fastback
'89 LX 5.0
'90 LX 5.0
'92 LX 5.0
'92 LX 5.0
'97 Cobra

BWAL is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Forums at Modded Mustangs 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 email 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.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



  LinkBacks (?)
LinkBack to this Thread: http://www.moddedmustangs.com/forums/96-98/43073-changing-heater-core-96-98-mustang.html
Posted By For Type Date
Replacing Heater Core - Ford Mustang Forum This thread Refback August 20th, 2015 01:22 PM
?????? ???????? - ???????? 2 - ??? ????????? - Russian Mustang Club This thread Refback July 15th, 2015 02:46 PM
A/C water leaking into passenger floor | V6Mustang.com This thread Refback May 9th, 2015 02:25 AM
Tech - mustang6ers This thread Refback January 17th, 2015 01:28 PM
Og?oszenia Cz?stochowa - Og?oszenia Cz?stochowa This thread Refback September 7th, 2014 07:22 PM
Og?oszenia za darmo Cz?stochowa - Og?oszenia Cz?stochowa This thread Refback September 7th, 2014 07:21 PM
Og?oszenia za darmo Cz?stochowa - Og?oszenia Cz?stochowa This thread Refback September 7th, 2014 07:21 PM
Serwis z og?oszeniami Cz?stochowa - Og?oszenia Cz?stochowa This thread Refback September 7th, 2014 07:21 PM
Serwis z og?oszeniami Cz?stochowa - Og?oszenia Cz?stochowa This thread Refback September 7th, 2014 07:21 PM
Serwis z og?oszeniami Cz?stochowa - Og?oszenia Cz?stochowa This thread Refback September 7th, 2014 07:21 PM
Serwis z og?oszeniami Cz?stochowa - Og?oszenia Cz?stochowa This thread Refback September 7th, 2014 07:19 PM
Serwis z og?oszeniami Cz?stochowa - Og?oszenia Cz?stochowa This thread Refback September 7th, 2014 07:19 PM
Darmowe Og?oszenia Cz?stochowa - Og?oszenia Cz?stochowa This thread Refback September 7th, 2014 07:19 PM
Portal og?osze? Cz?stochowa - Og?oszenia Cz?stochowa This thread Refback September 7th, 2014 07:18 PM
Serwis z og?oszeniami Cz?stochowa - Og?oszenia Cz?stochowa This thread Refback September 7th, 2014 07:17 PM
Portal og?osze? Cz?stochowa - Og?oszenia Cz?stochowa This thread Refback September 7th, 2014 07:17 PM
Serwis z og?oszeniami Cz?stochowa - Og?oszenia Cz?stochowa This thread Refback September 7th, 2014 07:16 PM
Darmowe Og?oszenia Cz?stochowa - Og?oszenia Cz?stochowa This thread Refback September 7th, 2014 07:16 PM
Darmowe Og?oszenia Cz?stochowa - Og?oszenia Cz?stochowa This thread Refback September 7th, 2014 07:15 PM
?????? ???????? - ???????? 2 - ??? ????????? - Russian Mustang Club This thread Refback May 21st, 2014 01:19 PM
How-To: The Compilation - V6Mustang.com This thread Refback December 25th, 2013 04:32 PM
Heater Core - V6Mustang.com This thread Refback November 18th, 2013 01:59 AM
Heater Core R and R This thread Refback October 23rd, 2013 06:45 PM
Heater Core R and R This thread Refback October 23rd, 2013 09:13 AM
Heater Core R and R This thread Refback October 23rd, 2013 09:11 AM
Heater Core | 3.7Mustang.com This thread Refback September 26th, 2013 10:50 AM
?????????? - ???????? 3 - ??? ????????? - Russian Mustang Club This thread Refback September 18th, 2013 12:53 PM
fallo en circuito de agua en ford mustang 2001 This thread Refback September 16th, 2013 12:23 PM
How-To: The Compilation This thread Refback February 28th, 2013 02:16 PM
How-To: The Compilation This thread Refback February 13th, 2013 10:25 PM
Heater Core This thread Refback January 18th, 2013 01:14 AM
Heater Core Install? This thread Pingback December 18th, 2012 01:52 PM
Wut da fuq This thread Refback December 13th, 2012 01:01 AM
Untitled document This thread Refback December 5th, 2012 09:02 PM
over heating problem.suspect=HEATER CORE? This thread Refback October 2nd, 2012 04:46 PM
Roush Mustang Links This thread Refback September 27th, 2012 10:33 PM
heavy duty heater core 1988 mustang gt - Info.com This thread Refback September 24th, 2012 10:44 PM
Untitled document This thread Refback August 1st, 2012 06:18 AM
Heater core replacement This thread Refback April 10th, 2012 12:21 AM
Strav's blog This thread Refback November 23rd, 2011 01:24 AM
Coolant Leak in '02 GT - MustangForums.com This thread Refback November 1st, 2011 10:25 PM
A/C water leaking into passenger floor This thread Refback July 3rd, 2011 11:33 AM
bad news on the cobra - SVTPerformance This thread Pingback April 25th, 2011 09:29 PM
Untitled document This thread Refback March 27th, 2011 01:48 AM
Heater core replacement This thread Refback January 31st, 2011 10:27 PM
over heating problem.suspect=HEATER CORE? This thread Refback January 13th, 2011 09:01 PM
mosheldon's Network on Delicious This thread Refback November 24th, 2010 07:54 PM
Untitled document This thread Refback August 10th, 2010 02:19 PM
Untitled document This thread Refback August 10th, 2010 10:37 AM
Untitled document This thread Refback August 10th, 2010 08:42 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 On
Pingbacks are On
Refbacks are On

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