Edmunds Answers

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  • wasd12 07/21/08 6:41 pm PST

    all i know is its a lot of work replacing a heater core in any car and requires removing the dash and all thats attached to it to get to the core itself. www.autozone.com can give you a general idea of how to do it yourself but i know u can bypass it pretty easily to get you by for the time being u just have to get the right size hose and the fittings. disconnect where it goes in and out of the dash and hook them up together and nothing more will go into the core and it'll stop leaking untill you can get to doing it. the hoses should be connected into the firewall just might take a little looking but they should be 3/4 to and inch in diameter. goodluck

  • MrShift@Edmunds 07/21/08 8:36 pm PST





    Heater Unit

    Removal

    CAUTION: Never remove the radiator cap while the engine is hot.


    1. Chock wheels.
    2. Drain the engine coolant.
    3. Discharge and recover the refrigerant from the A/C system. Refer to Recovery/Evacuating/Charging.
    4. Remove the dash panel.
    5. Remove the blower/evaporator unit.
    6. Disconnect the low pressure line from the evaporator outlet on the bulkhead.
    7. Disconnect the high pressure line from the evaporator inlet on the bulkhead. NOTE: Cap open ports. Do not use tape.
    8. Disconnect the heater return hose from the heater core outlet tube connection
    9. Disconnect the heater inlet hose from the heater core inlet tube connection.
    10. Disconnect the fresh air/recirculation control cable from the blower housing unit inlet duct.
    11. Disconnect five connectors at the bottom of the blower housing unit.
    12. Pull carpeting away from bulkhead to gain access to the hole cover plate.
    13. Remove the four nuts retaining the hole cover plate.
    14. Remove the hole cover plate.

    /



    1. Remove two mounting bolts at the top of the blower housing unit.
    2. Remove two nuts attaching the bottom of the blower housing unit to the bulkhead mounting studs.
    3. Remove the blower unit from the vehicle.
    4. Remove the temperature control cable from the heater unit servo.
    5. Remove the two nuts from the mounting studs at the bottom of the heater unit.
    6. Remove the top nut holding the heater unit to the bulkhead to the bulkhead mounting stud.
    7. Remove the heater unit.

    Installation

    1. Guide the heater core tube lines through the bulkhead.
    2. Mount the heater unit in position and loosely screw a nut on the mounting stud at the top of the heater unit.
    3. Loosely attach the two retaining nuts to the mounting studs at the bottom the heater unit.
    4. Tighten both the top and bottom retaining nuts. Tighten the nuts to 80 lb-in (9 N.m).

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    1. Connect the temperature control cable to the heater.
    2. Install the blower/evaporator unit.
    3. Install the cover plate in place.

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    1. Insert four nuts to retain the cover plate in place. Tighten the four nuts to 80 lb-in (9 N.m).
    2. Reconnect the five connectors
    3. Reinstall carpet
    4. Replace the dash panel.
    5. Connect the pressure hose to the evaporator core tube connection.
    6. Connect the suction hose to the evaporator core tube connection.
    7. Connect the heater return hose to the heater core outlet tube connection.

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    1. Connect the heater inlet hose to the heater core inlet tube connection.
    2. Install the battery.
    3. Install the battery bracket.
    4. Connect the battery cables.
    5. Replace the engine coolant.
    6. Charge the A/C system with refrigerant. Refer to Recovery/Evacuating/Charging.






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