Heater core replacement ford f250 how dificult is it

Answer for a 1995 F250:

Remove the glove-box door. Behind that is the heater core cover on the interior, passenger side of the firewall. Remove that cover and there is the heater core. Open the hood and look where the heater hoses enter the front right passenger area of the exterior side of the firewall. Disconnect the two heater hose clamps and you can then remove the heater core.

Drain your coolant low enough that it wont make a mess when you remove the the hose from the heater core under the hood, then remove the glove box door, looking at the heater box thru the glove box door opening remove seven (7) screws on the heater box, remove the panel and then remove the heater core, opposite to reinstall.

Heater core is under the dash, the dash will have to be remove to replace the heater core, you will also need to have the a/c system recover, evac, and recharge if the system has freon, when this repair is done, this is about a 10 hrs. job.

Seems to be that your heater core has some restrictions in it. If your heater is not getting hot. You may need to replace the heater core. The mixture door can be checked by the sound it makes when you turn the controller from cold to hot . you will hear a clump sound.Good Luck!!!

we call this a heater core, and here is how it is replaced. No need to drain the cooling system, just undo the heater core hoses at the firewall under the hood then pull glove box inset, undo bolts for access cover that is over heater core behind the glove box insert, remove cover, remove old core, put new core in, reinstall cover, reinstall glove box, done. I did these in 45 minutes at the Ford dealer I worked at.

i don't know realy if there is a fuse (though i doubt it) but issues with heatting may be this will help.

If the carpet under the heater core is damp, or if antifreeze vapor or steam is coming through the vents, the heater core is leaking.
Remove it and install a new unit (most radiator shops will not repair a leaking heater core.
If the air coming out of the heater vents isn't hot, the problem could stem from any of the following causes:

• The thermostat is stuck open, previnting the engine coolant from warming enough to carry heat to the heater core. Replace the thermostat.
• There is a blockage in the system, Preventing the flow of coolant through heater core. Feel both heater hoses the firewall. They should be hot.if one of them is cold, there is an obstruction in one of the hoses or in the heater core,or the heater control valve is shut. Detach the hoses and back flush the heater core with a water hose. If the heater core is clear but circulation is impeded, remove the two hoses and flush them out with a water hose.
• If flushing fails to remove the blockage from the heater core, the coremust replaced.
  

Sounds like you need to replace your heater core.

Recheck your work may have something backwards put selector in ac and see if you have heat may have the cable backwards

Disconnect heater hoses from heater tube on motor and clamp a hose from on tube to the other.

how do I change the heater core on my 1992 ford ranger
it had a short and cot on fire, put out and drove off, need to replace