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

Heater Delete

  • Thread starter Thread starter wido78
  • Start date Start date Apr 12, 2004
W

wido78

Founding Member
Jan 24, 2002
217
0
0
Olathe, Ks
Apr 12, 2004
#1
  • Apr 12, 2004
  • #1
I am in the process of preparing a '90 LX Coupe that I bought for drag racing and am getting ready to drop the new motor in the bay. While it was out, I decided that I am not going to use the A/C or Heater in the car and have removed them for weight savings. The question is what do I do with the coolant tubing that comes off of the lower intake (passenger side) and typically ties into the heater core? Do you guys, just plug the hole and deal with the check engine light? Do you make some type of bypass that ties the upper and lower tubes together and keeps the sensor plugged in?

Any assistance would be greatly appreciated, thanks.
 

RsStanG1987

I shaved all my pubes playing this game.
10 Year Member
Mar 13, 2004
569
9
79
Dupont PA
Apr 12, 2004
#2
  • Apr 12, 2004
  • #2
Just use a piece of hose to connect the two heater hoses together and thats all you have to do to by pass it. I did it when my heater core went bad.
 
W

wido78

Founding Member
Jan 24, 2002
217
0
0
Olathe, Ks
Apr 12, 2004
#3
  • Apr 12, 2004
  • #3
Thanks, how did you cover up the holes in the firewall?
 

jrichker

StangNet's favorite TOOL
In Remembrance. Thank you for your contributions
Mar 10, 2000
27,512
2,811
234
Dublin GA
Apr 12, 2004
#4
  • Apr 12, 2004
  • #4
Cut a couple of pieces of sheet metal in a rectangle shape. Put one on the firewall side and the other inside the car. Put a sheet metal screw through where the center of the hoses used to go to secure the sheet metal covers in place.
 

RsStanG1987

I shaved all my pubes playing this game.
10 Year Member
Mar 13, 2004
569
9
79
Dupont PA
Apr 12, 2004
#5
  • Apr 12, 2004
  • #5
I diddnt even cover the holes in my car. But you can weld in some sheet metal to make it look good.
 

393Bird

Founding Member
Jun 26, 2002
244
0
0
Clarksville Tennessee
Apr 12, 2004
#6
  • Apr 12, 2004
  • #6
I am doing the same thing now. I only capped the one outlet on the water pump, since the second one is connected to the t stat housing on mine.

The rules say that you need to cover any holes, and to use at least .032 aluminum or .024 steel. I just ordered a sheet of aluminum to do my rear firewall for the fuel cell, and will block off the heater and A/C holes, and also the opening at my steering shaft that I had to make up to clear the headers.

I read the service book on what it takes to remove the heater core, and after reading all the stuff, which mounted to 1-2 days of work, I removed the glove box, and introduced the air distribution box to Mr Saws All 1 1 /2 hours latter, no more heat or A/C system. I did it in small chunks to make sure I didnt cut any wires... Spent 2 full days with a heat gun and putty knife scraping the tar stuff from the floor. When I was done, weighed the stuff, 35 lbs of it....

I bet I have removed at least 350 lbs so far, and still at it.
 
You must log in or register to reply here.

Similar threads

D
Engine Coolant and Radio Issues
  • Don7Up
  • Sep 14, 2025
  • Fox 5.0 Mustang Tech
Replies
17
Views
567
Fox 5.0 Mustang Tech Oct 4, 2025
Don7Up
D
M
2001 v6 heater hose quick connect question
  • mnky99
  • Sep 24, 2025
  • SN95 V6 Mustang Tech
Replies
8
Views
468
SN95 V6 Mustang Tech Sep 26, 2025
mnky99
M
S
Oil cooler delete 4v 4.6 1999 cobra mustang
  • sami12
  • Feb 24, 2026
  • SN95 4.6L Mustang Tech
Replies
5
Views
269
SN95 4.6L Mustang Tech Feb 25, 2026
GOvert
G
B
Saying Hi
  • BriansNSane
  • Dec 20, 2025
  • The Welcome Wagon
Replies
5
Views
271
The Welcome Wagon Dec 21, 2025
BriansNSane
B
M
Progress Thread mnky99 2001 V6 evap core, ac compressor, heater core replacement
  • mnky99
  • Sep 5, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
1
Views
425
1996 - 2004 SN95 Mustang -General/Talk- Sep 5, 2025
mnky99
M
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?