Heater Cores and Blower Fans
Ford F-150
Ford F-250

Is changing the heater core in a 1986 ford f-250 done the same way as in 1986 f-150?

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2007-07-11 17:10:44
2007-07-11 17:10:44

To change out the heater-core in a 1986 F-150, you must access the old heater-core through the glove box. You must remove the glove box by removing the screws that hold it in. Once this is accomplished, you must loosen the clamps on the hoses that are connected to the old heater-core unit. Then remove the hoses from the old heater-core and slide the old heater-core out through the opening where the glove box use to be. Install the new one using these instructions in reverse! Presto...installed! Mechanic Man

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to changing the Heater CoreBasically you pop the hood and to the very back left corner, you will see two hoses going into a box looking thing against the firewall. You will see numerous bolts and screws. You must tear that apart to get to the heater core. First step is unclamping the two hoses. Once you've done that and gotten to the heater core its just like changing a radiator except smaller. You have to undo from the supports and hoses etc.... Somewhat simple, however lengthy and tedious. (May get really frustrating!)

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The heater core is in the dash , you have to take the steering wheel off, steering colum off, dash has to come out , the heater core is only 40.00 but buy the time you get the whole job done it's about 400.00

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You must go under the hood as well as inside to get the heater core removed and replaced. I just did mime.

you have to remove the dash and steering column then the heater box I have done many and its at least 1.5 days to do.

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just pull the hoses off the heater core and put them together easy all done under the hood. Mike join the 2 hoses together

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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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you may have your switch on your heater control set to recirculate the inside air. it should be set for outside air recirculation


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