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How To Remove & Install Mustang Heater Core | 1999-04 New Edge

Last Updated 11/18/2020 by Taylor Ward

Replace your old leaking heater core with one of our New Edge Mustang lightweight heater cores from Late Model Restoration!

Viewing this install and using the information shared is subject to the terms set forth here - View the LMR Install Instructions Disclaimer.

FOLLOW: new edge mustang , removal , installation , engine

  • How To Remove & Install Mustang Heater Core | 99-04 New Edge

Please note that the 1994-2000 models will differ from the 2001-2004 models on the hose connections and the heater core design.



Removal & Installation


  1. Start by locating and removing both of the heater core hoses. You will begin with the inner hose closest to the engine. This will be held in place with a quick disconnect on the heater core side and a hose clamp on the engine side.
  2. How To Remove & Install Mustang Heater Core | 99-04 New Edge - How To Remove & Install Mustang Heater Core | 99-04 New Edge


  3. The other hose was held in place with two clamps, removed these and set the hose aside.
  4. How To Remove & Install Mustang Heater Core | 99-04 New Edge - How To Remove & Install Mustang Heater Core | 99-04 New Edge


  5. Now you can locate the AC accumulator bracket. This will be held in place by (3) 10mm nuts. Start with the clamp around the accumulator.
  6. How To Remove & Install Mustang Heater Core | 99-04 New Edge - How To Remove & Install Mustang Heater Core | 99-04 New Edge


  7. On the backside under the accumulator will be the second nut.
  8. How To Remove & Install Mustang Heater Core | 99-04 New Edge - How To Remove & Install Mustang Heater Core | 99-04 New Edge


  9. The third is located under the heater hoses.
  10. How To Remove & Install Mustang Heater Core | 99-04 New Edge - How To Remove & Install Mustang Heater Core | 99-04 New Edge


  11. Once these are off, slide the bracket out of the vehicle.
  12. How To Remove & Install Mustang Heater Core | 99-04 New Edge - How To Remove & Install Mustang Heater Core | 99-04 New Edge


  13. Going back in the car we can address the HVAC case. This does not have to be fully removed from the car. Since we removed the AC accumulator bracket, this will allow you just enough room to access the panel holding the heater core in place. Start by locating all of the HVAC case bolts and remove these from the car.
  14. How To Remove & Install Mustang Heater Core | 99-04 New Edge - How To Remove & Install Mustang Heater Core | 99-04 New Edge

    How To Remove & Install Mustang Heater Core | 99-04 New Edge - How To Remove & Install Mustang Heater Core | 99-04 New Edge

    How To Remove & Install Mustang Heater Core | 99-04 New Edge - How To Remove & Install Mustang Heater Core | 99-04 New Edge


  15. Once you have the case free, gently pry back on the case to gain access to the heater core panel.
  16. How To Remove & Install Mustang Heater Core | 99-04 New Edge - How To Remove & Install Mustang Heater Core | 99-04 New Edge


  17. This panel will be held in place by (4) 8mm screws. We had to peel back the sound deadening material on the top edge to get to all of these bolts. Try to be as careful as possible here so you do not damage this material since you will need to reuse this. Now remove all (4)4 of the bolts holding the lid onto the case.
  18. How To Remove & Install Mustang Heater Core | 99-04 New Edge - How To Remove & Install Mustang Heater Core | 99-04 New Edge

    How To Remove & Install Mustang Heater Core | 99-04 New Edge - How To Remove & Install Mustang Heater Core | 99-04 New Edge

    How To Remove & Install Mustang Heater Core | 99-04 New Edge - How To Remove & Install Mustang Heater Core | 99-04 New Edge

    How To Remove & Install Mustang Heater Core | 99-04 New Edge - How To Remove & Install Mustang Heater Core | 99-04 New Edge


  19. Hold the sound deadening material out of place and separate the lid from the case and fully remove this. Now you can see the heater core. Lift this out and discard.
  20. How To Remove & Install Mustang Heater Core | 99-04 New Edge - How To Remove & Install Mustang Heater Core | 99-04 New Edge


  21. Going back in with the new heater core will be just as easy as the old one came out. Take your time here though so you do not damage any of the fins on the new core.
  22. How To Remove & Install Mustang Heater Core | 99-04 New Edge - How To Remove & Install Mustang Heater Core | 99-04 New Edge


  23. Once you have this one set, reinstall the lid and bolt the HVAC case back up.
  24. How To Remove & Install Mustang Heater Core | 99-04 New Edge - How To Remove & Install Mustang Heater Core | 99-04 New Edge


  25. Reinstall the AC accumulator bracket.
  26. How To Remove & Install Mustang Heater Core | 99-04 New Edge - How To Remove & Install Mustang Heater Core | 99-04 New Edge


  27. Reconnect both hoses in the engine bay area.
  28. How To Remove & Install Mustang Heater Core | 99-04 New Edge - How To Remove & Install Mustang Heater Core | 99-04 New Edge


  29. Now you can reinstall the dash, console and seats. Start the car, top off any fluids and check for leaks.
  30. How To Remove & Install Mustang Heater Core | 99-04 New Edge - How To Remove & Install Mustang Heater Core | 99-04 New Edge



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About the Video

How To Remove/Install New Edge Mustang Heater Core (01-04)

Check out our YouTube channel for even more tech tips, installation videos, how-tos, and more. The best place to go for anything Mustang related!

Published on 2020-09-24
Buy 94-04 Heater Core: https://latemodelres.to/HeaterCore_YouTube

Remove SN95/New Edge Mustang Dash Panel: https://youtu.be/HmIGg_d2Pfw

Follow along as Jay walks you through the removal and installation process of the heater core from your 2001-2004 New Edge Mustang

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#LMR #NewEdge #HeaterCore

Use of this video is subject to the terms as set forth in our LMR Install Video Disclaimer | https://lmr.com/page/lmr-install-video-disclaimer
Transcript
HC REPLACEMENT 99-04

Start by locating and removing both of the heater core hoses.

Start with the inner hose closest to the engine. This will be held in place with a quick disconnect on the heater core side and a hose clamp on the engine side.


The other hose was held in place with two clamps, removed these and set the hose aside.

Now you can locate the AC accumulator bracket. This will be held in place by three 10mm nuts.

Start with the clamp around the accumulator.

On the backside under the accumulator will be the second nut, and the third is located under the heater hoses. Once these are off, slide the bracket out of the vehicle.

Going back in the car we can address the HVAC case.

This does not have to be fully removed from the car.

Since we removed the AC accumulator bracket, this will allow you just enough room to access the panel holding the heater core in place.

Start by locating all of the HVAC case bolts and remove these from the car.


Once you have the case free, gently pry back on the case to gain access to the heater core panel.

This panel will be held in place by four 8mm screws. We had to peel back the sound deadening material on the top edge to get to all of these bolts.

Try to be as careful as possible here so you do not damage this material since you will need to reuse this.

Now remove all 4 of the bolts holding the lid onto the case.

Hold the sound deadening material out of place and separate the lid from the case and fully remove this.

Now you can see the heater core. Lift this out and discard.

Going back in with the new heater core will be just as easy as the old one came out.

Take your time here though so you do not damage any of the fins on the new core.

Once you have this one set, reinstall the lid and bolt the HVAC case back up.

Reconnect both hoses in the engine bay area.

Reinstall the AC accumulator bracket.

Now you can reinstall the dash, console and seats.

Reconnect the battery.

Start the car, top off any fluids and check for leaks.