Fox Adding heater back in my car.

91GTstroked · Apr 11, 2021

Hey guys,

I bought my 90 coupe a couple years ago. It's a southern car. Previous owner said the heater core leaked so it was removed.

I live in Minnesota and the fall weather can get pretty chilly, but it's the best time to cruise in my opinion.

They also removed the heater tube that's connected to the lower intake.

So, do I just need a heater core, hoses, and the heater tube?

Also there appears to be one tube sticking out of the firewall with a cap on it.

Fox Body Mustang Heater Tube & Hose Kit Without Coolant Tube| (86-93)

Replace the crucial components of your 1986-1993 Mustang's heater system with 5.0 Resto's heater tube and hose kit w/o coolant tube!

lmr.com

Thanks.

KRUISR · Apr 11, 2021

Looks like you still have A/C, so the under dash unit is still intact and functioning? If so, the job would be add the coolant tube you showed and the hoses on both ends (plus the heater core of course).

Otherwise it should be all good. I am assuming the Engine Coolant Temperature sensor is threaded into the port the coolant tube goes in.

Ryuk · Apr 11, 2021

Make sure you take detailed pictures and write up a complete tutorial on the process as this is on my to do list.

nickyb · Apr 11, 2021

Yes that one capped tube is your heater core.

91GTstroked · Apr 11, 2021

KRUISR said:
Looks like you still have A/C, so the under dash unit is still intact and functioning? If so, the job would be add the coolant tube you showed and the hoses on both ends (plus the heater core of course).

Otherwise it should be all good. I am assuming the Engine Coolant Temperature sensor is threaded into the port the coolant tube goes in.

Yeah I have ac and it works. You are correct, the engine coolant temperature sensor is threaded into lower intake.

I thought they said that they removed the heater core. But if that is it coming through the firewall then I guess not.

limp · Apr 12, 2021

Quite a job to remove your dash to get at the heater core.. I would suggest you watch some of the videos of people who have done it...

Specracer · Apr 12, 2021

Looks like you have half the heater core?? There should be 2 tubes coming out.

The LMR coolant tubes are a VERY close match for OEM. Getting that installed is a lot of work in itself. You have to pull the intake, get fuel rail off etc. You also need a large crows foot (1 1/8" if I recall, they mention it in the LMR install video). They have 2 versions, with and with out a port that runs to the EGR.

Getting to the heater core is NOT easy. As suggested, watch some videos. The cars I did had AC and I was able to get it done with out discharging the AC.

Lastly see if you can find an OEM, core. The ONLY thing that you can buy new are aluminum ones. One of the ones I did, I used one. I did not like it. For the second, I had an OEM recored. Paid many more times what an aluminum one costs, but I now have a proper brass one.

Blandnuts · Apr 12, 2021

Don't forget this. Or, make something similar.

Mustang Heater Core Flow Restrictor (79-04) E7VY-18358

Reduce the coolant pressure flowing into your heater core with this heater core flow restrictor for 1979-2004 Mustang!

lmr.com

Mustang5L5 · Apr 12, 2021

Specracer said:
The LMR coolant tubes are a VERY close match for OEM. Getting that installed is a lot of work in itself. You have to pull the intake, get fuel rail off etc. You also need a large crows foot (1 1/8" if I recall, they mention it in the LMR install video). They have 2 versions, with and with out a port that runs to the EGR.

The OEM Heater tube is still available, for $40.

Tube Assembly E6ZZ-9D424-B | TascaParts.com

E6ZZ-9D424-B - Tube Assembly

www.tascaparts.com

I wouldn't run one of those Aluminum junk cores they sell now. The older brass cores were the way to go. Short of that, i would take your current core and take it to a radiator repair shop and have them solder in a new core, as well as add solder to the two inlet tubes. I'd do that vs grabbing one of the new aluminum cores

91GTstroked · Apr 12, 2021

Thanks for the help everyone. I did remove a fox dash probably 15+ years ago. Switched interior from red to black on my old car.

Specracer · Apr 12, 2021

Mustang5L5 said:
The OEM Heater tube is still available, for $40.

Tube Assembly E6ZZ-9D424-B | TascaParts.com

E6ZZ-9D424-B - Tube Assembly

www.tascaparts.com

I wouldn't run one of those Aluminum junk cores they sell now. The older brass cores were the way to go. Short of that, i would take your current core and take it to a radiator repair shop and have them solder in a new core, as well as add solder to the two inlet tubes. I'd do that vs grabbing one of the new aluminum cores

I needed the tubes with out the EGR port, those are not easy to find.

I agree on the brass core. I actually have had 2 more done to have on the "shelf" for when another goes.

Fox Adding heater back in my car.

91GTstroked

Fox Body Mustang Heater Tube & Hose Kit Without Coolant Tube| (86-93)

Attachments

KRUISR

Ryuk

I love your drawers

nickyb

I gotta say i never painted my nuts, Never Ever

91GTstroked

limp

wrap a little cheese around it and its a done

Specracer

Active Member

Blandnuts

I don't swallow; I only swoosh

Mustang Heater Core Flow Restrictor (79-04) E7VY-18358

Mustang5L5

That is…until I whipped out my Bissell

Tube Assembly E6ZZ-9D424-B | TascaParts.com

91GTstroked

Specracer

Active Member

Tube Assembly E6ZZ-9D424-B | TascaParts.com

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Fox Adding heater back in my car.

Attachments

I love your drawers

I gotta say i never painted my nuts, Never Ever

wrap a little cheese around it and its a done

Active Member

I don't swallow; I only swoosh

That is…until I whipped out my Bissell

Active Member

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