Heater Cores and Blower Fans
Ford F-150

How do you bypass the Heater Core on a 1996 Ford F150 and is it hard to do?

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2006-03-23 18:30:34
2006-03-23 18:30:34

Simply disconnect the heater hoses going to and from the heater, (Inlet & Outlet) at the firewall. Purchase the proper size hose coupling that will allow you to connect the 2 hoses together. Do not plug these hoses, just connect them together. The coolant will now not flow through the heater core.

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If you bypass it correctly you will just no longer have any interior heat. Simply disconnect the heater hoses and connect them together. Connect the Inlet hose & Outlet hose going to the heater core together using a connector that you can purchase at most auto parts stores. By doing this you are simply routing the coolant away from the heater core. WARNING: Do not plug either of these hoses!!!!

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 ?

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.

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?

on a 1993 4.9 it is just to the left of the thermostat where the radiator hose and heater core hoses go into the thermostat it has a couple of wires running into it.

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

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.

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

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.

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

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.

you must first remove the glove box,then you will be able to get at the screws that hold the box in place


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