How to remove and replace heater core on a 1996 lincoln town car, signature series

are you sure that's the problem? wouldn't want to waste your time. heater core is a time consuming nightmare. you cant learn on youtube

Look at fig. 4 for the heater a/c dash control: HEATER CORE Altima REMOVAL AND INSTALLATION

1. Position the steering wheel in the straight-ahead position.
2. Turn the ignition switch OFF.
3. Disconnect the negative (() battery cable; then, the positive (+) battery cable. NOTE: Wait for a least 3 minutes after disconnecting the battery cables for the charge in the air bag circuit to dissipate before working on the air bag module(s).
   
4. Remove the driver's side SRS and steering wheel by removing or disconnecting the following:
   • Lower lid from the steering wheel and disconnect the driver's air bag module connector
   • Left and right side lids from the steering wheel
   • Special bolts from both side of the steering wheel using a tamper resistant Torx wrench (T50)
   • Air bag module and store it face up
   • Horn's electrical connector and remove the steering wheel nut
   • Steering wheel from the steering column using a suitable puller
5. Remove the passenger's side SRS by removing or disconnecting the following:
   • Glove box door and the glove box
   • Front passenger's air bag module connector
   • 2 special bolts using a tamper resistant Torx wrench (T50)
   • 4 passenger's air bag-to-instrument panel nuts
   • Front passenger's air bag module and store it face up.
6. Drain the cooling system into a clean container for reuse.
7. Discharge and recover the air conditioning system refrigerant.
8. Working in the engine compartment, disconnect the heater hoses from the heater core tubes.
9. Remove the instrument panel by removing or disconnecting the following:
   • Kick plate and dash side finisher on the driver's side
   • 2 lower panel-to-instrument panel screws and the lower panel on the driver's side
   • 2 lower reinforcement panel-to-instrument panel screws and the lower reinforcement panel
   • 6 steering column cover screws, the covers, the spiral cable and combination switch
   • 2 cluster lid "A" screws and the cluster lid "A"
   • 3 combination meter screws, disconnect the electrical harness connector and remove the combination meter
   • Switch panel
   • Instrument panel lower covers
   • Snap out the transmission shifter finisher (boot)
   • 4 cluster lid "C" screws and the cluster lid "C"
   • 4 audio and deck pocket-to-instrument panel screws and the audio and deck pocket
   • 5 center console screws and the center console
   • 2 center instrument panel screws and the center panel
   • front defroster grilles
   • Front pillar garnish
   • Instrument panel 3 nuts/4 screws and the instrument panel
   • 8 instrument stay assembly nuts and the stay
   • Steering member assembly 5 nuts/1 bolt and the steering member
10. Remove the air conditioning housing assembly by removing or disconnecting the following:
    • Refrigerant lines from the air conditioning housing assembly
    • Thermo control amp
    • Air conditioning housing assembly
11. Remove or disconnect the following:
    • Heater unit
    • Heater core from the heater unit Fig. 1: Exploded view of the steering wheel and air bag module
      Fig. 2: Exploded view of the passenger's side air bag module
      Fig. 3: Exploded view of the instrument panel assembly
      Fig. 4: Exploded view of the heater housing assembly and related components
      Fig. 5: View of the heater core and heater housing
      
    To install:
    
12. Install or connect the following:
    • Heater core to the heater unit
    • Heater unit
13. Install the air conditioning housing assembly by installing or connecting the following:
    • Air conditioning housing assembly
    • Thermo control amp
    • Refrigerant lines to the air conditioning housing assembly
14. Install the instrument panel by installing or connecting the following:
    • Steering member assembly and the steering member 5 nuts/1 bolt
    • Instrument stay assembly and the 8 stay nuts
    • Instrument panel and the instrument panel 3 nuts/4 screws
    • Front pillar garnish
    • Front defroster grilles
    • Center instrument panel and the 2 center panel screws
    • Center console and the 5 center console screws
    • Audio and deck pocket and the 4 audio and deck pocket-to-instrument panel screws
    • Cluster lid "C" and the 4 cluster lid "C" screws
    • Snap in the transmission shifter finisher (boot)
    • Instrument panel lower covers
    • Switch panel
    • Combination meter, connect the electrical harness connector and install the 3 combination meter screws
    • Cluster lid "A" and the 2 cluster lid "A" screw
    • Combination switch, the spiral cable, the covers and the 6 steering column cover screws
    • Lower reinforcement panel and the 2 lower reinforcement panel-to-instrument panel screws
    • Lower panel and the 2 lower panel-to-instrument panel screws, on the driver's side
    • Kick plate and dash side finisher, on the driver's side
15. Working in the engine compartment, connect the heater hoses to the heater core tubes.
16. Install the passenger's side SRS by installing or connecting the following:
    • Front passenger's air bag module
    • 4 passenger's air bag-to-instrument panel nuts
    • 2 new special bolts and torque using a tamper resistant Torx wrench (T50) to 11-18 ft. lbs. (15-25 Nm)
    • Front passenger's air bag module connector
    • Glove box door and the glove box
17. Install the driver's side SRS and steering wheel by installing or connecting the following:
    • Steering wheel to the steering column
    • Steering wheel nut and torque the nut to 22-29 ft. lbs.
    • Horn's electrical connector
    • Air bag module
    • New special bolts to both sides of the steering wheel and torque the bolts using a tamper resistant Torx wrench (T50) to 11-18 ft. lbs. (15-25 Nm).
    • Both the left and right side lids to the steering wheel
    • Lower lid to the steering wheel and connect the driver's air bag module connector
18. Refill the cooling system.
19. Connect the positive (+) battery cable; then, the negative (() battery cable.
20. Evacuate, charge and leak test the air conditioning system refrigerant.
21. Operate the engine to normal operating temperatures; then, check the climate control operation and check for leaks.

heater core is located on the front passenger side next to your ac evaporator assembly, your heater unit uses engine coolant water as a heater , the reason why you smell anti freeze because your core has a leak.
you can disassemble the unit if you have the right tool and by removing the front glove box and console panel to expose and give way to check that unit, it normally fastened by screws and a few bolts and nuts.

you will have to replace the heater core if you are confirmed the heater valve is cracked.
1. Disconnect the negative battery cable.2. Drain the cooling system and disconnect the heater hoses from the heater core tubes. Plug the hoses and the heater core tubes to prevent coolant leakage.3. Remove the 3 nuts located below the windshield wiper motor attaching the left end of the plenum to the dash panel. Remove the 1 nut retaining the upper left corner of the evaporator case to the dash panel.4. Disconnect the vacuum supply hose(s) from the vacuum source. Push the grommet and vacuum supply hose(s) into the passenger compartment.5. Remove the right and left lower instrument panel insulators.6. On 1990-00 vehicles:
1. Remove the cross body brace and disconnect the wiring harness from the temperature blend door actuator.
2. Disconnect the ATC sensor tube from the evaporator case connector.
7. Disconnect the vacuum jumper harness at the multiple vacuum connector near the floor air distribution duct. Disconnect the white vacuum hose from the outside-recirculating door vacuum motor.8. Remove the 2 hush panels.9. Remove 1 plastic push fastener retaining the floor air distribution duct to the left end of the plenum. Remove the left screw and loosen the right screw on the rear face of the plenum and remove the floor air distribution duct.10. Remove the 2 nuts from the 2 studs along the lower flange of the plenum.11. Carefully move the plenum rearward to allow the heater core tubes and the stud at the top of the plenum to clear the holes in the dash panel. Remove the plenum from the vehicle by rotating the top of the plenum forward, down and out from under the instrument panel. Carefully pull the lower edge of the instrument panel rearward, as necessary, while rolling the plenum from behind the instrument panel.12. Remove the 4 retaining screws from the heater core cover and remove the cover from the plenum assembly. Pull the heater core and seal assembly from the plenum assembly.

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.

Is there a clicking sound coming from the center of the dash at the bottom of the windshield? If so, it is the blend door motor which changes from heat to a/c. It requires the removal of the dash to replace it, It could be a vacuum leak under the center of the dash above the floor hump

Have replaced my heater core in my 2001 regular cab 4wd in december 2009. Had to pull the complete dash including the complete metal dash behind the dash that you see. Also had to remove the right passenger side inner fender well to acess the remaining two bolts that hold the heater core cover to the firewall. Its an insane job to do but the repair shop books call for 9 1/2 hrs to do the job. I'm not an expert but this is what it takes.

There are 3 small bolts across the top where the front defrost grill is. 2 large bolts directly under the headlight switch and another big bolt lower right hand corner of the glovebox area.

You have to pull the dash almost out to replace the heater core. first drain the coolant and remove the heater hoses in the engine compartment. Next lower the steering column. there are 4-5 8mm screws onthe top of the dash,and tw 13mmbolts on the sides remove the kick panels to see them. Also remove the airbag module on the tranny hump under the dash.when all is unfastened you can pull the dash back on the passengers side back and almost put it on the seat. you will see the heater core on the top of the heater box. Discharge the ac and remove the heater box fasteners in the engine compartment . pull the box down inthe cab of the truck r&r core. sound worse thatn it really is good luck

Go to Autozone and purchase a Clymer repair manuel. It will show how to remove the dash. You need to find all the screws.