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The heater core is located in the heater box, under the passenger side of the dash. Most FORD heater boxes are snap-clipped together, and if you remove the rear panel from the heater box, you will see the heater core...it looks like a smaller radiator...twist the heater hose off of the heater core (x2) from the engine side and gently remove the heater core from under the dash. When replacing the new heater core, be very careful re-installing new hoses to the core...it is a fragile thin metal that can leak almost instantly if tweaked too roughly...replace all parts in reverse order of removal.
Drain the cooling system. Draining the cooling system will prevent toxic engine coolant from leaking into the passenger cabin of the vehicle during removal of the heater core. To drain the cooling system, simply disconnect the lower radiator hose from the radiator by loosening the hose clamp and pulling the hose off. Be sure to drain the fluid into a sealable container and dispose of the coolant at an appropriate disposal site.
2Pull the dashboard six inches rearward. In order to do this, you must remove the following parts; the center dash bolt (located under the defroster vent cover), the bolts under the driver and passenger kick boards, the bolt connecting the dashboard to the radio mount, and the the bolt connecting the dashboard to the rear of the glove box. The locations of these bolts are immediately apparent upon looking under the dash. Once you have removed these bolts, you can pull the dashboard rearward and secure it.
3Remove the heater core box. The heater core box is a black plastic box that surrounds the heater core. This part should be visible when looking down into the dashboard from the passenger side seat. Remove the two bolts on top holding it to the firewall and another on the bottom near the foot well. After removal of these bolts, the heater core and box are attached to the vehicle only by the coolant lines, which you can now disconnect by reaching into the box and pulling them off of the heater core (you may have to loosen the clamps first).
4Install the new heater core. This is accomplished by applying steps 1 through 3 in reverse order; re-connect heater core coolant line, re-install heater core box (be sure to apply silicon sealant to the edges of the box, hermetically sealing it), replace the dashboard and install bolts, and re-fill the cooling system.
If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core.
When a heater core leaks, a new heater core is installed or the old one repaired. Heater Housing
The heater housing is usually under the dash and must be removed to gain access to the heater core.
Procedures for replacing the heater core vary with the year, make, and model of car. It threfore necessary to consult the manufacturer's repair manuals for the proper procedure for replacement.
The heater housing is disassembled to get to the heater core.
Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core.
Remove the heater coolant hoses.
Remove the cable and/or vacuum control lines (if equipped).
Remove the heater core securing brackets and/or clamps.
Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing.
To reinstall the heater core, reverse the removal steps.
When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.
Well first, if your talking about the radiator hoses when you say the bottom hose is warm and the top is cold, that would suggest to me a stuck thermostat. If not, then the heater core is located inside the truck under the dash. You can follow the heater hoses under the hood to the firewall and that will tell you where, under the dash the core is located. It is kind of a big job, as all the under dash covers will need to come out as well as the glove box. The heater core is inside the heater box, a black plastic box that will also need to be removed. It is important to note that when you are reinstalling the heater box after you change the core, it must be completely sealed, either with RTV or two sided insulating tape.
This is a fairly easy fix. Disconnect the heater hoses under the hood. Go to passenger side under the dash remove the lower panel from the dash to access the heater box. Unplug any and all connections on the lower half of the heater box and remove the lower half of the box should be about six screws you should see the heater core and the evaporator core. Heater core skinnier of the two should have one or two straps holding it in remove the straps and remove the core and replace.
You dont have to remove the dash but it might make it a easier job if you did. The heater core is removed from under the R/S dash. after removing the lower dash covers, glove BOX, A/C programmer. Then from under the hood, disconnecting heater hoses, and removing heater case mounting bolts.Then finally jockying the heater box from under the dash without spilling coolant fronm the heater core is a trick. Hope this helps.
It is very hard!! You actually are supposed to remove the whole dash!! I took a shortcut and just took the screws out of the plastic box under the dash where the heater core is,behind the console, next to the floorboard, and cut it across the back on the bottom. You then have to get under the car to remove this screw that is on the firewall between the 2 heater core hoses..then remove the hoses from the heater core on the firewall. Then you can get back inside the vehicle and it will pull out. When you replace, the cover that you cut, just put the screws back in and put some tape across where you cut the cover off. It saved me from having to take the whole dash out, and having to spend $300 to have a mechanic replace my heater core!!
hi sounds like heater core problem.if you remove the panel that comes from under the dash to the gear shift you will see the heater box in front ,now remove the bottom of that box you should see the heater radiatior.now comes the harder part from under the car at the back engine on the bulkhead two pipes goin into the bulkhead .take these pipes off and the clip so that you can remove the small radiator out of the heater box to replace.