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david, Auto Service Technician
Category: Car
Satisfied Customers: 1500
Experience:  Certified Master Technician,Certified in diesel & gasoline engines
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1994 Ford f-150: i change a heater core

Customer Question

how do i change a heater core in a 1994 ford f-150

Optional Information:
1994 Ford f-150 302

Submitted: 11 years ago.
Category: Car
Expert:  david replied 11 years ago.

thank you for the question hope this helps

To replace the heater core:

Disconnect the cable from the negative battery terminal. With the engine cool, drain the coolant from the radiator into a suitable container. Disconnect the heater hoses from the heater core on the engine side of the firewall. Working in the passenger compartment, remove the glove box for better access. Working in the passenger compartment, remove the seven screws, which attach the heater core cover to the plenum assembly. Disconnect the vacuum source but leave the vacuum harness attached to the cover. remove the cover. Remove the heater core from the plenum chamber. Installation is the exact reverse of removeal except for the following: fill the radiator with the proper type and amount of coolant. Start the engine and check for leaks