OEM Ford Explorer Sport Trac Heater Core

Ford Explorer Sport Trac Heater Core Parts and Q&A

• Heater Core, Front
  H2MZ-18476-Y
  Q: How to service the auxiliary heater core on Ford Explorer Sport Trac?

  A:

  Service of the auxiliary heater core begins with hoisting the vehicle to neutral gear while emptying engine coolant from the system. Detach both heater hose clamps followed by disconnecting the heater hoses. The service requires removal of the rear quarter trim panel together with the two auxiliary line floorpan bracket nuts. The screw and line bracket are found inside the vehicle above the floorpan line bracket but need the removal of four line bracket screws before taking out the line bracket. Remove the auxiliary harness electrical connector after which remove and install the auxiliary housing bolts and nut at 6 Nm (53 lb-in) torque. First disconnect both electrical connections of the auxiliary actuator then remove the three screws that hold the actuator and finally remove the actuator from its position. You should now remove the three auxiliary temperature blend door actuator screws as well as the actuator itself. Take out the heater core cover by removing its four screws and then get rid of the cover. After that disconnect the two clamps securing the heater core hoses to remove the auxiliary heater core. The installation process requires using plain water to lubricate the coolant hoses when needed as you revert the removal sequence and complete the engine cooling system filling.
• Heater Core
  H2MZ-18476-AC
  Q: How should a heater core leak be tested and how to remove and install on Ford Explorer Sport Trac?

  A:

  Testing for heater core leaks becomes mandatory before experts can detach the component from its placement in the vehicle. You need to remove the A/C evaporator housing as well as the instrument panel before beginning heater core extraction. To begin the heater core removal the PCM and its heat sink need to be extracted by taking out the ground strap screw followed by heat sink removal. The plenum chamber should be installed on the vehicle floor following the removal of the dash panel engine-side nuts which number four in total. The heater core requires removal after securing the cover with removed screws before extracting the heater core element. The installation process requires installing a new oval foam seal around heater core inlet and outlet tubes following which the reverse removal procedure should be done.