Heater Cores and Blower Fans
Ford F-150
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How do you replace heater core on a 1998 f150 v8?

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2006-05-29 12:42:38
2006-05-29 12:42:38

There is no short cut or fast way to do this. The dash has to come out to access the heater box and replace the core. So the steps in replacing the heater core are to disconnect the heater hoses, remove the dash, to access the heater core cover on the front of the heater case and replace the core. Reassembly is in the reverse order as disassembly. Fill the cooling system with new coolant, and burp the air form the cooling system. There is no short cut or fast way to do this. The dash has to come out to access the heater box and replace the core. So the steps in replacing the heater core are to disconnect the heater hoses, remove the dash, to access the heater core cover on the front of the heater case and replace the core. Reassembly is in the reverse order as disassembly. Fill the cooling system with new coolant, and burp the air form the cooling system.

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Related Questions


How do I replace the block heater in my 1998 F150 4.6L?

you should be able to get at heater core just by removing glove box.no need to remove all the dash Is there any instructions on how to do this?

There is no short cut or fast way to do this. The dash has to come out to access the heater box and replace the core. So the steps in replacing the heater core are to disconnect the heater hoses, remove the dash, to access the heater core cover on the front of the heater case and replace the core. Reassembly is in the reverse order as disassembly. Fill the cooling system with new coolant, and burp the air form the cooling system.

Look up under the passenger's side dash close to the kick panel, and you will see a heater case. there on the front is a removable cover, held on with several 7mm screws. Remove that cover, disconnect the heater hoses under the hood, and replace the core. Reassembly is in reverse order of removal.

Try flushing the coolant system out

Is there any difference in replacing the heater core in the 2002 as opposed to an earlier model such as the 1997 ?...or is it pretty much the same job ?

I have done it a few times, to custom paint my dash. I forgot how, but I suggest looking at fordtruckworld.com. Many people have asked the same question, and gotten MANY responses. That's where I learned how the first time!

Look up under the passenger's side dash close to the kick panel, and you will see a heater case. there on the front is a removable cover, held on with several 7mm screws. Remove that cover, disconnect the heater hoses under the hood, and replace the core. Reassembly is in reverse order of removal.

Your heater core might be clogged or otherwise inoperable. Videos for unclogging a heater core can be found quite easily on Youtube.

To change the heater core in a 87 ford f150 is easy. Just remove the glove box and then behind it there is 7 bolts. After you remove the 7 bolts then just remove the cover and behind it is the heater core. By far the easiest heater core I ever changed.

There are several common heater problems for a 1997 f150. A stopped up or leaking heater core, bad thermostat or clogged up blower fan housing all can cause heat problems.

Burried behind the dash on the passenger side, good luck.

to replace a heater core in f150, lift hood and remove both coolant hoses near firewall then inside truck, remove ashtray this will enable you to get at a screw that holds glove box in dash remove glovebox then behind glovebox is a black plastic panel remove screw holding this panel remove panel, you will then see the heatewr core remove screws holding heater core remove heater cre istallation of new core is exact opposite to removal of old core when all reassembled, check coolant level, as you may have lost some during replacement of core

some possibilities are. low coolant level, open thermostat, pluged heater core,

remove glove box. remove platic cover behind glove box under hood remove both heater hoses at firewall under dash remove retaining screws on heater core remove heater core reinstall is exact opposite of removal

Low on coolant. Thermostat stuck open. Heater core plugged up. Temp blend door malfunction.

I wouldn't recommend it. Odds are that you'll lose coolant liquid through the heater core, which eventually can lead to the car running dry and overheating.

the heater core is located behind the dash on the passenger side of the cab. much of the dash has to be removed and shifted to get to the box that houses the heater core. the hoses that supply coolant to the heater core must be remove via the engine bay. it is somewhat of a lengthy process, but can be done with patience and time.

trust me that is not a job you want to take on. take it to a mechanic. you have to pull the dash out

Look up under the passenger's side dash close to the kick panel, and you will see a heater case. there on the front is a removable cover, held on with several 7mm screws. Remove that cover, disconnect the heater hoses under the hood, and replace the core. Reassembly is in reverse order of removal. Look up under the passenger's side dash close to the kick panel, and you will see a heater case. there on the front is a removable cover, held on with several 7mm screws. Remove that cover, disconnect the heater hoses under the hood, and replace the core. Reassembly is in reverse order of removal.

You have done something to the mix door. It should shut off air to the heater core when the AC is on. It is located right near the core and you may have bent it or just disconnected it by mistake.


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