1990 Ford F-250 Q&A

1990 Ford F-250 Question: Heater core replacement

I just purchased an '87 F250 4x4 with 89,000 miles and in very good shape. I'm going to have to replace the heater core. It does not have a/c. Is this one of those "takes all day and you end up throwing wrenches" repairs? Thanks -
Answer 1
Sounds like you got yourself a nice truck! I looked up the instructions for the heater core, and on the wrench throwin' scale, maybe a 1. I would make sure you have new clamps, coolant, good quality parts and plenty of time to get it done. Here are the instructions: Vehicles Without Air Conditioning: 1. Drain the cooling system to a level below the heater core. 2. Disconnect the coolant hoses at the heater core tubes. 3. From inside the passenger's compartment, remove the 7 screws that secure the heater core access cover to the plenum chamber. Remove the cover. On some models, it might be easier to first remove the glove compartment. 4. Remove the heater core. 5. Installation is the reverse of removal. Replace any damaged sealer. CAUTION: When draining the coolant, keep in mind that cats and dogs are attracted by ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old. -
Related Items:
Can this be done without removal of the dash? Will glove box removal give me enough access?
have had antifreeze smell since bought truck. Previous owner had heater core replaced thinking that was the problem. Truck had headgasket leak....long story short, new long block, still smell anti...
heater core leaks on floorboard. how to replace it
when I run my heater there is a film on the inside of my windshield and it smells like antifreeze
not gitting fuel,fuel pump works and enurse switch works