Where is the heater core located on a 1991 Ford Explorer Sport and how do you change one?

Answer 1

the heater core is located just inside the firewall on the passenger side behind the dash. To replace it you have to first remove the glovebox and instrument panel bezel. Then remove all 7mm screws that hold in the dash. there a alot and some are hard to find a flashlight will help and it also is good idea to remove the front seats this gives you way more room but takes a little more work.Youll then remove the cover below the steering wheel. then unbolt the steering column. It has for bolts either 13 or 15mm below the speedometer. once you've removed these 4 bolts let the steering column sag down, don't remove anything else there. you should then be able to locate and remove any remaining screws or 10mm bolts that hold in the dash. The speedo needs to come out along with any other electrical swithes or gauges. After all this the dash should be loose unplug any wire connections and remove. Then drain your engine coolant and disconnect the two small radiator hoses that lead to the heater core.(in engine compartment) Then remove the black cover it has several small screws and is sealed so youll have to pop it open carefully. the heater core just slides in and out . reinstall cover, then the dash,remember to plug everything back in. speedo and gauges go back in next the re-mount the steering column,instrument panel,(radio cover which also has to be removed when the dash comes out) and glove box reattach the inlet and outlet hoses to the heater core NOTE: the inlet and outlet hoses are directional which mean if they are installed backwards the heater wont work because there wont be any fluid in the core before changing your heater core make sure these lines are hooked up correctly because if your car has been serviced sometimes the technition will hook them up backwards and you wont know until your doesn't work.