Ford Explorer & Mercury Mountaineer: Removing the Heater Core

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Removing the heater core from your car requires following just a few simple steps. Learn to remove the heater core correctly from a certified mechanic in this free automotive video.

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Video Transcript

Here we're demonstrating how to change a heater core on a late model Ford Explorer or Mercury Mountaineer. In this step we're going to talk about the proper service procedure to remove the heater core itself and prepping of our new heater core for re-installation. Now I have the dash bungee corded up out of the way so that I can use both my hands to take and slip the heater core out of its position, just like so. And take care over all the vehicle's interior so you don't drip coolant on it. As you can see from the leak, the heater core is just soaked. From here we're going to take and head over to our work bench and prep our new heater core for installation. What I have here on my work bench is both the old heater core and the new one. What we're going to do is take and try and re-use this insulting tape around the heater core. Now the design of the way it is, is air is going to want to by-pass through the cracks between the heater core on the sides the top and the bottom instead of go through the element. There's a lot resistance in the element so they take they put this insulating tap all the way around it. Now you may be able to reuse it, you may not to, if you can't it's a good idea to head to your parts store and have them hook you up with some. We're going to take and try to peel it off here, you may need to use a little bit of glue when reinstalling it, this due to the fact that the adhesive on the heater core has been cooked, the more tape you can back on your new heater core, the actual, the better efficiency you will get across the heat exchanging grid. You want to take and force the air to go through it, instead of by passing around it. And there you go, you're going to take and reinstall this stuff on to your new heater core, and like I said you may need to use a little bit of adhesive, just due to the age. If it doesn't stick right away you'll know, you'll have to take and run down to your parts store and get some glue or if you have some in your house you can go ahead and use just about any kind as long as it sticks on there. And there you go. That is the proper service procedure for removing the actual heater core, switching over your insulating tape.

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