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How do i remove a heater core from a 1994 taurus

Customer Question
how do i remove a heater core from a 1994 taurus
Submitted: 8 years ago.Category: Ford
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Answered in 5 minutes by:
1/22/2009
Ford Mechanic: Fordanswerman, Ford Motor Company Certified Tech replied 8 years ago
Fordanswerman
Fordanswerman, Ford Motor Company Certified Tech
Category: Ford
Satisfied Customers: 3,306
Experience: Ford Engine Master/Transmission Master/Chassis Master=Ford Senior Master also Diesel 7.3/6.0
Verified

Thanks for your question.

 

You have to remove the dash.

 

Thanks

 

1992-95 Vehicles

See Figure 3

Some vehicles are equipped with air bags. Before attempting to service air bag equipped vehicles, be sure that the system is properly disarmed and that all safety precautions are taken. Serious personal injury and vehicle damage could result if this note is disregarded.

  1. Position the wheels in the straight ahead position. Disconnect the negative and then the positive battery cables.
  2. Remove the radio chassis and the instrument panel finish panel.
  3. Disengage all electrical connections from the steering column switches.
  4. Remove the four screws and instrument panel steering column cover from under the steering column tube.
  5. Disengage the insulator retainer, then remove the insulator.

Do NOT rotate the steering column shaft.

  1. Remove the four nuts and absorber assembly from under the steering column.
  2. If equipped, detach the parking brake release control motor from the parking brake control and ignition switch lock cylinder wiring connector.
  3. Cover the front seat to protect it from damage. Remove the four nuts retaining the steering column to the instrument panel, disconnect the PRNDL cable, then lower the steering column on the front seat.
  4. Install the ignition lock cylinder to ensure that the steering column shaft does not turn.
  5. Remove the four retaining screws from the instrument cluster, then disconnect the speed control cable and vehicle speed sensor (if equipped). Disconnect the wiring, then remove.
  6. Remove the bolt at the steering column opening attaching the instrument panel to the instrument panel dash brace. Remove the one instrument panel dash brace retaining bolt from under the radio.
  7. Remove the sound insulator from under the glove compartment by removing the two push nuts that secure the insulator to the studs on the climate control case assembly.
  8. Remove the three screws retaining the glove compartment to the instrument panel, then remove the glove compartment door.
  9. Remove the air cleaner assembly, battery and battery tray.
  10. Disengage the wires of the main wire loom inside the engine compartment. Disconnect the rubber grommet from the dash panel, then feed the wiring through the hole in the dash panel into the passenger compartment.
  11. Remove the retaining screws, then remove the right and left-hand cowl side trim panels. Disconnect the wires from the instrument panel at the right and left-hand cowl sides.
  12. Remove the screws (one on each side) retaining the instrument panel to the left and right-side cowls.
  13. Pull up to unsnap the right and left-side speaker covers, and the center cover assembly, then remove them upward. Open the glove compartment door and allow it to hang open.
  14. Using all openings, tag and remove all instrument panel electrical connections, A/C outlets, A/C control cables, antenna wires, and anything else that may interfere with panel removal.
  15. Support the instrument panel, then remove the three instrument panel screws at the top of the assembly. Disconnect any remaining electrical wires. Remove the instrument panel assembly from the vehicle.
  16. If the panel is being replaced, transfer all components, wiring and hardware to the new instrument panel.

Click image to see an enlarged viewFig. 3: View of the instrument panel assembly and mounting bolt locations-1992-95 vehiclesTo install:

  1. Position the instrument panel in place. Engage the underhood electrical connections. Install the instrument panel upper and lower screws.
  2. Install the lower brace and tighten the bolt to 5-8 ft. lbs. (6.8-10.8 Nm). Install the radio speaker grilles.
  3. Using all necessary openings, engage all instrument panel electrical connections, air conditioning outlets, air conditioning control cables, antenna wires, and anything else that may have been removed.
  4. Continue the installation in the reverse order of the removal procedure.
  5. Check for proper operation of the air bag indicator. Check for proper operation of all components.

 

Remove the heater box:

 

 

With Air Conditioning
CAUTION Some 1992-93 and all 1994-95 air conditioned vehicles covered by this information are equipped with a new non-CFC (chlorofluorocarbon) refrigerant (R-134a). This new refrigerant is not available commercially in most areas, as it is usually illegal for do-it-yourselfers to service a vehicle with this refrigerant. If you have a Taurus or Sable that uses the new refrigerant, R-134a, the vehicle should be taken to a qualified technician for any repair requiring A/C system service.

It is necessary to remove the evaporator case in order to remove the heater core. Whenever an evaporator case is removed, it will be necessary to replace the suction accumulator/drier.

  1. Disconnect the negative battery cable.
  2. Remove the instrument panel on 1986-89 vehicles as follows:
    1. Remove the four screws retaining the steering column opening cover and remove the cover.
    2. Remove the sound insulator under the glove compartment by removing the two push nuts securing the insulator to the studs on the climate control case.
    3. Remove the steering column trim shrouds and disconnect all electrical connections from the steering column switches.
    4. Remove the four screws at the steering column bracket to remove the steering column.
    5. Remove the screws retaining the lower left and radio finish panels and remove the panels by snapping out.
    6. Remove the cluster opening finish panel retaining screws. On Taurus remove jam nut behind the headlight switch and screw behind the clock or clock cover. Remove the finish panel by rocking the upper edge toward the driver.
    7. Disconnect the speedometer cable by reaching up under the instrument panel and pressing on the flat surface of the plastic connector. The panel can be removed with the cluster installed.
    8. Release the glove compartment assembly by depressing the side of the glove compartment bin and swinging the door/bin down.
    9. Using the steering column, cluster and glove compartment openings and by reaching under the instrument panel, tag and disconnect all electrical connections, vacuum hoses, heater/air conditioner control cables and the radio antenna cable.
    10. Disconnect all underhood electrical connectors of the main wire loom. Disengage the rubber grommet from the dash panel and push the wire and connectors into the instrument panel area.
    11. Remove the right and left speaker opening covers by snapping out.
    12. Remove the two lower instrument panel-to-cowl side retaining screws from the right and left side. Remove the instrument panel brace retaining screw from under the radio area. On Sable, remove the defroster grille by snapping out.
    13. Remove the three instrument panel upper retaining screws and remove the instrument panel.
  3. Remove the instrument panel on 1990-95 vehicles as follows:
    1. Position the front wheels in the straight-ahead position.
    2. Remove the ignition lock cylinder and, if equipped, remove the tilt lever.
    3. Remove the steering column trim shrouds. Disconnect all electrical connections from the steering column switches.
    4. Remove the four bolts and opening cover and the two bolts and reinforcement from under the steering column.
    5. Disengage the insulator retainer and remove the insulator. Remove the four nuts and reinforcement from under the steering column.

Do not rotate the steering column shaft.

    1. Remove the four nuts retaining the steering column to the instrument panel, disconnect the shift indicator cable and lower the column on the front seat. Install the lock cylinder to make sure the steering column shaft does not turn.
    2. Remove bolt at the steering column opening attaching the instrument panel to the brace. Remove instrument panel brace retaining bolt from under the radio area.
    3. Remove the sound insulator under the glove compartment by removing the two push nuts that secure the insulator to the studs on the climate control case.
    4. Disconnect the wires of the main wire loom in the engine compartment. Disengage the rubber grommet from the dash panel, then feed the wiring through the hole in the dash panel into the passenger compartment.
    5. Remove the right and left cowl side trim panels. Disconnect the wires from the instrument panel at the right and left cowl sides.
    6. Remove one screw from each the left and right side retaining the instrument panel. Pull up to unsnap the right and left speaker opening covers and remove.
    7. Release the glove compartment assembly by depressing the side of the glove compartment bin and swinging the door/bin down.
    8. Using the steering column and glove compartment openings and by reaching under the instrument panel, tag and disconnect all electrical connections, vacuum hoses, heater/air conditioner control cables, speedometer cable and radio antenna cable.
    9. Close the glove compartment door, support the panel and remove the three screws attaching the top of the instrument panel to the cowl top and disconnect any remaining wires. Remove the panel from the vehicle.
  1. Drain the coolant from the radiator. Properly discharge the air conditioning system.

Be sure to consult the laws in your area before beginning any procedure which requires servicing the air conditioning system. In some states, it is illegal to perform repairs involving refrigerant unless the work is done by a certified technician.

  1. Disconnect and plug the heater hoses at the heater core. Plug the heater core tubes.
  2. Disconnect the vacuum supply hose from the inline vacuum check valve in the engine compartment.
  3. Disconnect the air conditioning lines from the evaporator core at the dash panel. Cap the lines and the core to prevent entrance of dirt and moisture.
  4. Remove the screw holding the instrument panel shake brace to the evaporator case and remove the shake brace.
  5. Remove the two screws attaching the floor register and rear seat duct to the bottom of the evaporator case. Remove the three nuts attaching the evaporator case to the dash panel in the engine compartment.
  6. Remove the two screws attaching the support brackets to the cowl top panel. Carefully pull the evaporator assembly away from the dash panel and remove the evaporator case from the vehicle.
  7. Remove the vacuum source line from the heater core tube seal and remove the seal from the heater core tubes.
  8. If equipped with automatic temperature control, remove the three screws attaching the blend door actuator to the evaporator case and remove the actuator.
  9. Remove the four heater core access cover attaching screws and remove the access cover and seal from the evaporator case. Lift the heater core and seals from the evaporator case.

To install:

  1. Transfer the seal to the new heater core, then install the heater core into the evaporator case.
  2. Position the heater core access cover on the evaporator case and install the four attaching screws. If equipped with automatic temperature control, position the blend door actuator to the blend door shaft and install the three attaching screws.
  3. Install the seal on the heater core tubes and install the vacuum source line through the seal.
  4. Position the evaporator case assembly to the dash panel and cowl top panel at the air inlet opening. Install the two screws attaching the support brackets to the cowl top panel.
  5. Install the three nuts in the engine compartment attaching the evaporator case to the dash panel. Install the floor register and rear seat duct to the evaporator case and tighten the two attaching screws.
  6. Install the instrument panel shake brace and screw to the evaporator case. Install the instrument panel in the reverse order of removal.
  7. Connect the air conditioning lines to the evaporator core and the heater hoses to the heater core.
  8. Connect the black vacuum supply hose to the vacuum check valve in the engine compartment.
  9. Fill and bleed the cooling system. Connect the negative battery cable.
  10. Leak test, evacuate and charge the air conditioning system. Observe all safety precautions.

Some 1992-93 and all 1994-95 vehicles covered by this information are equipped with R-134a NOT R-12 refrigerant. These two refrigerants are NOT compatible. Using the incorrect refrigerant in an R-134a system will lead to compressor failure, refrigerant oil sludge and/or poor air conditioning system performance.

  1. Check the system for proper operation.

 

 

 

 

 

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