• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

86 GT heater core

  • Thread starter Thread starter Seanmay1
  • Start date Start date Jan 23, 2008
S

Seanmay1

New Member
Jan 17, 2008
47
0
0
Conyers, GA
Jan 23, 2008
#1
  • Jan 23, 2008
  • #1
Ok how do i change the heater core in a 86 GT? pics would be awesome but just give me lots of details i need to fix this soon, riding around with no heat sucks
 

5.0 Nostalgia

10 Year Member
Feb 28, 2003
904
5
39
CT
Jan 23, 2008
#2
  • Jan 23, 2008
  • #2
Here are some links. I don't know the difference in an 86 dash though. Maybe someone else can chime in. Good luck with the project, it's a lot of work.

http://www.mustangmonthly.com/howto/mump_0606_ford_mustang_heater_core_replacement/index.html

http://allfordmustangs.com/forums/5...r-core-replacement-fox-body-2.html#post872014
 
I

impulse001

New Member
Jan 16, 2008
84
0
0
New Jersey
Jan 23, 2008
#3
  • Jan 23, 2008
  • #3
:search:

There are a ton of posts on this, I just got done doing one with a friend on an 87 GT.. Get ready for ALOT of work, more if you're going to tackle it alone.

My best advice.. Take your time, and try to remember where all the screws you take out go.
 
S

Seanmay1

New Member
Jan 17, 2008
47
0
0
Conyers, GA
Jan 23, 2008
#4
  • Jan 23, 2008
  • #4
I dont think i could do that, maybe i will do like my friend said and just get a power inverter and a electric heater lol
 
I

impulse001

New Member
Jan 16, 2008
84
0
0
New Jersey
Jan 23, 2008
#5
  • Jan 23, 2008
  • #5
Seanmay1 said:
I dont think i could do that, maybe i will do like my friend said and just get a power inverter and a electric heater lol
Click to expand...

Lol, reminds me of when I was doing it with my friend (because that was just yesterday) it had been cold here so we connected 3 portable heaters in the back seat and plugged them all inside.. haha.

That wont work for long though, eventually the heater core will start to leak, and can leak into your car. You wont have heat (obviously) so no defogging. I mean, its not as bad as people say it is IMO, it just takes alot of time and patience. That, and the fact that spending a few hundred for it to get done is a waste of money.. lol
 
S

Seanmay1

New Member
Jan 17, 2008
47
0
0
Conyers, GA
Jan 24, 2008
#6
  • Jan 24, 2008
  • #6
yea i wont pay anyone to fix my car, if i cant fix it then it wont get fixed, and having no heat really isn't a big deal if it gets that cold i can drive the other car, hell the mustang has AC in the winter and heat in the summer lol
 
I

impulse001

New Member
Jan 16, 2008
84
0
0
New Jersey
Jan 24, 2008
#7
  • Jan 24, 2008
  • #7
Seanmay1 said:
yea i wont pay anyone to fix my car, if i cant fix it then it wont get fixed, and having no heat really isn't a big deal if it gets that cold i can drive the other car, hell the mustang has AC in the winter and heat in the summer lol
Click to expand...


Lol, you get AC in the winter and heat in the summer when you open your windows.

But like I said, your heater core can start to leak into your car, or into the engine bay down to your headers/exhaust, causing a nice smell and smoke. Then you will have to keep refilling the coolent, untill the heater core really busts and leaks too much to keep refilling.. so you really should change it
 
S

Seanmay1

New Member
Jan 17, 2008
47
0
0
Conyers, GA
Jan 24, 2008
#8
  • Jan 24, 2008
  • #8
There aren't any hoses ran to the heater core i dont know if its bad or not for sure, but i dont really want water in my car so im not going to hook the lines to it
 
You must log in or register to reply here.

Similar threads

K
86 GT Water Pump
  • Kade5114
  • May 11, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
3
Views
104
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- May 11, 2026
nickyb
P
Hello, core supports for '86 vs '90-3, i need some answers if anyone knows
  • Pony Dr.Mike
  • Mar 14, 2026
  • The Welcome Wagon
Replies
7
Views
320
The Welcome Wagon Mar 15, 2026
95steedamustang
D
Engine Coolant and Radio Issues
  • Don7Up
  • Sep 14, 2025
  • Fox 5.0 Mustang Tech
Replies
17
Views
656
Fox 5.0 Mustang Tech Oct 4, 2025
Don7Up
D
F
Electrical Foxbody wiring harness 2.3 to v8 swap
  • Foxbodyjake
  • Mar 23, 2026
  • Fox 5.0 Mustang Tech
  • 2
Replies
24
Views
730
Fox 5.0 Mustang Tech Apr 13, 2026
Foxbodyjake
F
B
A/C Issues
  • Boats90GT
  • Jun 10, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
2
Views
122
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jun 11, 2026
Mcmahst
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?