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  1. #1

    P71 Year
    2000
    Join Date
    Apr 2010
    Location
    Northern Californa
    Posts
    348

    Heater Core Change.

    1. If equipped, turn the air suspension service switch to the OFF position before raising the vehicle.

    2. Drain the cooling system.

    3. Remove or disconnect the following:


    Negative battery cable

    Front seats

    Carpeting

    Rear airflow duct

    Heater hoses



    4. Remove the driver-s side air bag module by removing or disconnect the following:

    SRS module-to-steering wheel bolts, from both sides of the steering wheel.

    SRS module and disconnect the electrical connector

    Horn switch electrical connector



    5. Remove the passenger-s side SRS module by removing or disconnecting the following:

    Open the glove box and disconnect the glove compartment isolator

    Push inward on the 2 glove box door tabs and lower it

    SRS module-s electrical connector

    SRS module-to-instrument panel bolts and the module



    6. Remove the instrument panel by removing or disconnecting the following:

    Speed control servo nuts and move the servo aside

    Bolt and disconnect the left side bulkhead connector

    Left side bulkhead connector from the dash panel

    Windshield washer fluid reservoir screw, and position the reservoir aside

    Blower motor electrical connector

    Air conditioning pressure cut-off switch electrical connector

    In-line electrical harness connector

    Electronic Automatic Temperature Control (EATC) variable blower motor controller electrical connector

    Right front wheel

    Right front fender splash shield bolts and move the shield away from the cowl

    Wiring harness from the evaporator case

    Wiring harness from the cowl

    Right side instrument panel lower insulator pushpins, disconnect the power point electrical connector, remove the courtesy lamp from the socket and remove the insulator

    Unseat the wiring grommet and feed the wiring harness through the cowl

    Cowl side trim panels and the windshield side garnish moldings from both sides

    Locking clip and the Electronic Crash Sensor (ECS) module electrical connector

    Antenna connector

    Ground wire bolts from the right side

    EATC hose at the evaporator housing

    Bolt and disconnect the bulkhead connector from the right side

    Pull the door weatherstrip seals away from the instrument panel on both sides

    Tunnel brace trim cover

    Climate control head vacuum harness connector

    Instrument panel tunnel brace nuts and the brace

    Ground wire bolts from the left side

    Wiring harness connectors from the left side

    Parking brake switch electrical connector


    1. Pry out the instrument panel defroster opening grille, disconnect the electrical connectors and the remove the grille.



    7. Remove or disconnect the following:

    3 upper instrument panel screws

    Instrument panel cowl side nut from both sides

    Instrument panel cowl side bolt from the left side

    Instrument panel

    Windshield wiper mounting arm and the pivot shaft

    Electrical connector and remove the upper cowl extension screw and the extension

    Vacuum hoses and the wire harness connector from the evaporative emissions canister purge valve

    Evaporative emissions purge valve nuts and the valve

    Cowl side nut

    Right side rear fender apron screws and reposition the apron

    Evaporator housing nut and screw

    Vacuum hoses and the wiring harness connectors

    Plenum chamber-s lower flange nuts

    Plenum chamber-s upper flange nut and the plenum chamber

    Heater core cover-to-heater plenum chamber screws and the cover

    Seal and the heater core



    Fig. View of the instrument panel finish panels





    Fig. Exploded view of the instrument panel-Crown Victoria and Grand Marquis




    Fig. Exploded view of the heater air plenum chamber, the evaporator housing and the air inlet duct




    Fig. View of the heater core




    To install:

    1. Install or connect the following:

    Seal and the heater core

    Heater core cover and the cover-to-heater plenum chamber screws

    Plenum chamber and the plenum chamber-s upper flange nut

    Plenum chamber-s lower flange nuts

    Vacuum hoses and the wiring harness connectors

    Evaporator housing nut and screw

    Right side rear fender apron and the apron screws

    Cowl side nut

    Evaporative emissions purge valve and the valve nuts

    Vacuum hoses and the wire harness connector to the evaporative emissions canister purge valve

    Electrical connector; then, install the upper cowl extension screw and the extension

    Windshield wiper mounting arm and the pivot shaft



    2. Install the instrument panel by installing or connecting the following:

    Instrument panel

    At the left side, install the instrument panel cowl side bolt

    Instrument panel cowl side nut on both sides

    3 upper instrument panel screws

    Electrical connectors and the install the instrument panel defroster opening grille

    Parking brake switch electrical connector

    Wiring harness connectors on the left side

    Ground wire bolts on the left side

    Instrument panel tunnel brace and the brace nuts

    Climate control head vacuum harness connector

    Install the tunnel brace trim cover.

    Door weatherstrip seals to the instrument panel on both sides

    Bulkhead connector and tighten the bolt on both sides

    EATC hose at the evaporator housing

    Ground wire bolts on the right side

    Antenna connector

    ECS module electrical connector and the locking clip

    Cowl side trim panels and the windshield side garnish moldings on both sides

    Feed the wiring harness through the cowl and seat the wiring grommet

    Right side instrument panel lower insulator, connect the power point electrical connector, install the courtesy lamp to the socket and secure the insulator with pushpins

    Wiring harness from the cowl

    Wiring harness to the evaporator case

    Right front fender splash shield and the shield bolts

    Right front wheel

    EATC variable blower motor controller electrical connector

    In-line electrical harness connector

    Air conditioning pressure cut-off switch electrical connector

    Blower motor electrical connector

    Windshield washer fluid reservoir and the reservoir screw

    Left side bulkhead connector to the dash panel

    Left side bulkhead connector and tighten the bolt

    Speed control servo and the servo nuts

    Right SRS module and torque the module-to-instrument panel bolts to 62-97 inch lbs. (7-11 Nm)

    Right SRS module electrical connector

    Glove compartment isolator

    Glove box door

    Horn switch electrical connector

    Electrical connector and install the left SRS module

    Left SRS module-to-steering wheel bolts on both sides of the wheel, and torque the bolts to 90-122 inch lbs. (10-14 Nm)

    Rear airflow duct

    Carpeting

    Front seats

    Heater hoses

    3. Refill the cooling system.

    4. Connect the negative battery cable.

    5. Operate the engine to normal operating temperature. Check the climate control operation and check for leaks.

  2. #2

    P71 Year
    1999
    Join Date
    May 2011
    Location
    East Haven, CT.
    Posts
    38

    Re: Heater Core Change.

    WOW! Almost better off buying a new car........thats a lotta work........good info though.
    US MARINES Kilo 3/3 Long Range Eraser

  3. #3

    P71 Year
    2000
    Join Date
    Apr 2010
    Location
    Northern Californa
    Posts
    348

    Re: Heater Core Change.

    Yup... they really burred it in there well!

  4. #4

    P71 Year
    1999
    Join Date
    May 2011
    Location
    San Diego,Ca
    Posts
    195

    Re: Heater Core Change.

    shops will charge you average about $700 to do it.
    SGT


 

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