Heater core???
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New User
Joined: Oct 2000
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Heater core???
Have 1996 F-150, 125,000 miles. Loses coolant slowly, noticed musty smell and saw it was wet under the carpet. Sound like a heater core going?? Has not been wet thru the carpet. If it is the core, is this a greatly involved project?? A buddy also said while I (or the mechanic) am down there I should have the a/c evaporator replaced, as it is the same labor to do it by itself possibly later down the line. Thanks in advance for any help !!
Junior User
Joined: Jan 2001
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Heater core???
You can get to the heater core by splitting the box under the hood by the firewall. It really isn't such a big deal. As for the evaporator, you would have to charge down the freon before you can open the lines. If the A/C's holding a charge, I wouldn't mess we it. When you have the heater core case open, spray some Lysol into the plenum to take care of the musty odor.
Postmaster
Joined: Jul 1999
Posts: 3,172
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Heater core???
The heater core is accessible from inside the truck . Remove the glove box , There is 7 or 8 screws to remove the cover to gain access to the heater core . Other than removing the hose clamps from the core under the hood , its all interior work .
Junior User
Joined: Jan 2001
Posts: 71
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Heater core???
Oh, shoot! You're right! There I go holding the manual upsidedown again. Sorry for the incorrect post. I forgot that I did go under the dash on my '77 F-250. As I recall, it was a little bit of a booger, but what was worst was the weather. Had to leave the door open in the middle of a snow storm. How else was I gonna get any heat?
Freshman User
Joined: Jun 1999
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Heater core???
I done this before on my 1994 F-150. It really isn't that hard except for getting to the screws that hold the cover on the core. Some of them are in tight places and require a short driver and/or socket, and some might need a longer driver to access them. I would test fit all of your tools first.
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