Heater Core
Hotshot
Joined: Feb 2004
Posts: 11,697
Likes: 3
From: Marengo, Iowa
It depends, , Air, High out put heater? Chances are, it is likely to be the standard core, so it isn't to bad. The cover is behind the glove box, and isn't too had to do. There was a recent thread about this that covered it in detail.
Junior User
Joined: Aug 2003
Posts: 66
Likes: 0
From: MN.
replaced the heater core on my 1981 f100 last year the case is on the fire wall on the passenger side, combination of bolts inside and out to release it.. not a bad job on a 300 six..
made a world of difference I have heat again..
good luck
made a world of difference I have heat again..
good luck
Tuned
Joined: Oct 2003
Posts: 342
Likes: 6
I did my 84 F-250 awhile back. Yes, remove the dash pad, roughly 12 screws. Remove the glove box, four screws I think. You will then see the bolt heads, or nuts to remove to get the heater core out. Took me about 30 minutes to remove, an hour or so to clean out 20 years worth of debri, and another 30 minutes or so to re-assemble. Not a tough job at all.
Senior User
Joined: Sep 2002
Posts: 431
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From: Midwest
The heater box inside and outside the truck sandwich together at the fire wall. So by removing the inside heater box the outside one may come loose, but the heater core is inside the cab behind the cover behind the glove box.
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Tuned
Joined: Oct 2003
Posts: 342
Likes: 6
Yes, you will have to remove the heater box and the core comes out from the inside of the truck. While you have it a part, I'd clean and inspect the "heater door" and the vents. I think you'll be suprised what you'll find in the box and vents. I spent most of my time cleaning up the vents etc. Once again, this is not a big job and is about as straight forward as anything you'll do to your truck. VC
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Junior User
Joined: Jul 2003
Posts: 94
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From: Ontario Canada
Heater Core Exchange
I changed my heater core last year in my 1986 F150 4x4 (302 motor). I was able to take the entire core out from under the hood at the fire wall after removing all the hoses, cover (shroud) and core mounting bracket holders.
Take the old core in with you to the parts counter as there is a regular heater core and a HO (High output) heater core. Most cases when you order the heater core they supply you with the regular unit. The only way you will know you have a HO heater core is when it is out and you compare it to a regular heater core. (I had a HO heater core which is a bit thicker andslightly larger) so compare them closely before you get the new one. Otherwise it is a straight out and back in, no real rocket science on the exchange, if you use some simple wrench work!
Bruce P.
Take the old core in with you to the parts counter as there is a regular heater core and a HO (High output) heater core. Most cases when you order the heater core they supply you with the regular unit. The only way you will know you have a HO heater core is when it is out and you compare it to a regular heater core. (I had a HO heater core which is a bit thicker andslightly larger) so compare them closely before you get the new one. Otherwise it is a straight out and back in, no real rocket science on the exchange, if you use some simple wrench work!
Bruce P.
Tuned
Joined: May 2003
Posts: 345
Likes: 4
From: Southern IL
Just look at it and if you can see two metal ends with your heater hoses pokeing out of the firewall, you'll have to unhook everthing under the hood and then go behind the glove box. There's a cover with around six small bolts in it between the glove box and firewall. Take those out and pull the cover, it'll be right there.
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Posting Guru
Joined: Jul 2003
Posts: 2,454
Likes: 1
From: Adams TN
ok thanks every thing under the hood is disconnected
it will have to wait to next week since i am 16 i have a very limited budget and i had a tire blow out last night while towing our demoderby car
had to leave my truck at a friends house and use my dads truck to tow the trailer home
trailer loaded with car and gear weighs about 7500lbs
i think my old tires weren't up to it
so now i have to get new tires
it will have to wait to next week since i am 16 i have a very limited budget and i had a tire blow out last night while towing our demoderby car
had to leave my truck at a friends house and use my dads truck to tow the trailer home
trailer loaded with car and gear weighs about 7500lbs
i think my old tires weren't up to it
so now i have to get new tires
Last edited by DT 466Man; Aug 22, 2004 at 11:20 AM.
Tuned
Joined: May 2003
Posts: 345
Likes: 4
From: Southern IL
I used to run my old trucks without the heater hooked up all the time, especially in the summer. If you want to drive your truck, just take a small heater hose and connect one end to the water pump and the other to the top heater hose outlet on the intake. Otherwise, just cut out the core, it'll be cooler in the cab for now to boot.