Heat and Air
myhummer12
01-12-2005, 10:29 PM
After replacing intake on a 1997 Lincoln Town Car, there is a noise under the dash that sound like a door open and closing. The temp is hot in all temp ranges. Is the haet and air controls a vacuum control or replacing the intake cause this problem.
Towncar
01-13-2005, 06:26 PM
There's several possiblities:
1)The "Blend door":
Could be broken, or the actuator was disconnected somehow.
The "blend door" (A/C Air Temperature Control Door) is electronically controlled via an "A/C electronic door actuator motor", so I can't imagine how replacing the manifold would effect that one.
2) Defroster Door:
Vacuum controlled, but it dosn't move back-n-forward like the blend door, it moves up-n-down and controls the floor vs defroster air flow.
Since it moves up and down, it shouldn't flop around like the blend door can.
3) Heat Air Damper:
Also vacuum controlled via a vacumm motor. This one does move back and forth but it's deep inside Air Plenum Chamber so I don't suppose it's movement would cause too much noise, and being vacuum motor controlled I don't see how it would flop around like the blend door can.
4) Heater & A/C inlet duct door:
This one is also vacuum motor controled. It's sole purpose it to select from outside air, or recirculate internal air. This door has the same properties as the heat air damper door except for it's outside the plenum chamber and may make noticable noise if flopping around however, just like the other, it's connected tro a vacuum motor and shouldn't flop around either.
I might be able to copy you some shots of these systems if I get some spare time.
Have a look here too for some more ideas (http://www.lincolnsonline.com/cgi-bin/ultimatebb.cgi?ubb=get_topic&f=3&t=003770)
I'm going to add the Heater Air Plenum Chamber removal and intallation text to give you an idea of what connects where.
This is just an overview, details for each section are listed in the book as well.
Good luck.
Removal
1. Disconnect battery ground cable (14301). Refer to «Section 14-01».
2. Disconnect the heater water hoses (18472) from the heater core tubes. Plug the ends of the heater water hoses to prevent coolant loss.
3. Plug heater core tubes securely to prevent coolant leakage from heater core (18476) during heater air plenum chamber removal.
4. Remove three nuts located below the windshield wiper motor (17508) retaining the LH end of the heater air plenum chamber (18471) to the dash panel (01610).
5. Remove one nut retaining the upper LH corner of the A/C evaporator core housing (19A559) to the dash panel.
6. Remove LH and RH lower instrument panel insulators.
7. Disconnect two vacuum supply hoses from vacuum source. Push grommet and vacuum supply hose into passenger compartment.
8. Remove all instrument panel retaining screws and pull the instrument panel (04320) back as far as possible without disconnecting any wire harnesses.
9. Loosen the RH door sill plate and remove the RH side cowl trim panel.
10. Remove cross body brace and disconnect wiring harness from A/C electronic door actuator motor (19E616) and disconnect the sensor tube from the evaporator case connector.
11. Disconnect the vacuum jumper harness at the multiple vacuum connector near the heater outlet floor duct (18C433).
12. Disconnect the white vacuum hose from the heater and A/C air inlet duct door vacuum control motor (18A318).
13. Remove two hush panels.
14. Remove one plastic push fastener retaining the heater outlet floor duct to the LH end of the heater air plenum chamber. Remove LH screw and loosen RH screw on the rear face of the heater air plenum chamber and remove the heater outlet floor duct.
15. Remove two nuts from the two studs along the lower flange of the heater air plenum chamber.
16. Carefully move heater air plenum chamber rearward to allow heater core tubes and the stud at the top of the heater air plenum chamber to clear holes in the dash panel. Remove heater air plenum chamber from vehicle by rotating the top of the heater air plenum chamber forward, down and out from under the instrument panel. Carefully pull lower edge of instrument panel rearward as necessary while rolling the heater air plenum chamber from behind the instrument panel.
Heater Air Plenum Chamber and Air Inlet Duct
Installation
1. Route the vacuum supply hose through the dash panel and seat the grommet in the opening.
2. Position the heater air plenum chamber under the instrument panel with the A/C register duct opening up and the heater core tubes down. Rotate the heater air plenum chamber up behind the instrument panel and position the heater air plenum chamber to the dash panel. Insert the heater core tubes and mounting studs through their respective holes in the dash panel and the A/C evaporator core housing.
3. Install three nuts on the studs along the lower flange and one on the upper flange of the heater air plenum chamber.
4. Install three nuts below the windshield wiper motor to retain the LH end of the heater air plenum chamber to the dash panel.
5. Install one nut to retain the upper LH corner of the A/C evaporator core housing to the dash panel.
6. Position heater outlet floor duct on heater air plenum chamber. Install two screws and plastic push fastener.
7. If removed, position heater air damper door vacuum control motor to the mounting bracket. Install two retaining screws.
8. Connect the white vacuum hose to the heater and A/C air inlet duct door vacuum control motor.
9. Connect the vacuum jumper harness to the plenum harness at the multiple vacuum connector near the heater outlet floor duct. Install heater outlet floor duct.
10. Connect the sensor tube to the evaporator case connector on EATC-equipped vehicles.
11. Install the cross body brace and connect wiring harness to the A/C electronic door actuator motor.
12. Install the bolt to retain the lower RH end of the instrument panel to the side cowl.
13. Install the RH side cowl trim panel and tighten the RH door sill plate retaining screws.
14. Install glove compartment door (06024) and check arms.
15. Connect vacuum supply hose to vacuum supply.
16. Install RH and LH lower instrument panel insulators.
17. Install two hush panels.
18. Unplug the heater core tubes and connect the heater water hoses to the heater core tubes.
19. Fill the cooling system with coolant to replace coolant lost during removal of the heater air plenum chamber.
20. Connect the battery ground cable. Refer to «Section 14-01».
1)The "Blend door":
Could be broken, or the actuator was disconnected somehow.
The "blend door" (A/C Air Temperature Control Door) is electronically controlled via an "A/C electronic door actuator motor", so I can't imagine how replacing the manifold would effect that one.
2) Defroster Door:
Vacuum controlled, but it dosn't move back-n-forward like the blend door, it moves up-n-down and controls the floor vs defroster air flow.
Since it moves up and down, it shouldn't flop around like the blend door can.
3) Heat Air Damper:
Also vacuum controlled via a vacumm motor. This one does move back and forth but it's deep inside Air Plenum Chamber so I don't suppose it's movement would cause too much noise, and being vacuum motor controlled I don't see how it would flop around like the blend door can.
4) Heater & A/C inlet duct door:
This one is also vacuum motor controled. It's sole purpose it to select from outside air, or recirculate internal air. This door has the same properties as the heat air damper door except for it's outside the plenum chamber and may make noticable noise if flopping around however, just like the other, it's connected tro a vacuum motor and shouldn't flop around either.
I might be able to copy you some shots of these systems if I get some spare time.
Have a look here too for some more ideas (http://www.lincolnsonline.com/cgi-bin/ultimatebb.cgi?ubb=get_topic&f=3&t=003770)
I'm going to add the Heater Air Plenum Chamber removal and intallation text to give you an idea of what connects where.
This is just an overview, details for each section are listed in the book as well.
Good luck.
Removal
1. Disconnect battery ground cable (14301). Refer to «Section 14-01».
2. Disconnect the heater water hoses (18472) from the heater core tubes. Plug the ends of the heater water hoses to prevent coolant loss.
3. Plug heater core tubes securely to prevent coolant leakage from heater core (18476) during heater air plenum chamber removal.
4. Remove three nuts located below the windshield wiper motor (17508) retaining the LH end of the heater air plenum chamber (18471) to the dash panel (01610).
5. Remove one nut retaining the upper LH corner of the A/C evaporator core housing (19A559) to the dash panel.
6. Remove LH and RH lower instrument panel insulators.
7. Disconnect two vacuum supply hoses from vacuum source. Push grommet and vacuum supply hose into passenger compartment.
8. Remove all instrument panel retaining screws and pull the instrument panel (04320) back as far as possible without disconnecting any wire harnesses.
9. Loosen the RH door sill plate and remove the RH side cowl trim panel.
10. Remove cross body brace and disconnect wiring harness from A/C electronic door actuator motor (19E616) and disconnect the sensor tube from the evaporator case connector.
11. Disconnect the vacuum jumper harness at the multiple vacuum connector near the heater outlet floor duct (18C433).
12. Disconnect the white vacuum hose from the heater and A/C air inlet duct door vacuum control motor (18A318).
13. Remove two hush panels.
14. Remove one plastic push fastener retaining the heater outlet floor duct to the LH end of the heater air plenum chamber. Remove LH screw and loosen RH screw on the rear face of the heater air plenum chamber and remove the heater outlet floor duct.
15. Remove two nuts from the two studs along the lower flange of the heater air plenum chamber.
16. Carefully move heater air plenum chamber rearward to allow heater core tubes and the stud at the top of the heater air plenum chamber to clear holes in the dash panel. Remove heater air plenum chamber from vehicle by rotating the top of the heater air plenum chamber forward, down and out from under the instrument panel. Carefully pull lower edge of instrument panel rearward as necessary while rolling the heater air plenum chamber from behind the instrument panel.
Heater Air Plenum Chamber and Air Inlet Duct
Installation
1. Route the vacuum supply hose through the dash panel and seat the grommet in the opening.
2. Position the heater air plenum chamber under the instrument panel with the A/C register duct opening up and the heater core tubes down. Rotate the heater air plenum chamber up behind the instrument panel and position the heater air plenum chamber to the dash panel. Insert the heater core tubes and mounting studs through their respective holes in the dash panel and the A/C evaporator core housing.
3. Install three nuts on the studs along the lower flange and one on the upper flange of the heater air plenum chamber.
4. Install three nuts below the windshield wiper motor to retain the LH end of the heater air plenum chamber to the dash panel.
5. Install one nut to retain the upper LH corner of the A/C evaporator core housing to the dash panel.
6. Position heater outlet floor duct on heater air plenum chamber. Install two screws and plastic push fastener.
7. If removed, position heater air damper door vacuum control motor to the mounting bracket. Install two retaining screws.
8. Connect the white vacuum hose to the heater and A/C air inlet duct door vacuum control motor.
9. Connect the vacuum jumper harness to the plenum harness at the multiple vacuum connector near the heater outlet floor duct. Install heater outlet floor duct.
10. Connect the sensor tube to the evaporator case connector on EATC-equipped vehicles.
11. Install the cross body brace and connect wiring harness to the A/C electronic door actuator motor.
12. Install the bolt to retain the lower RH end of the instrument panel to the side cowl.
13. Install the RH side cowl trim panel and tighten the RH door sill plate retaining screws.
14. Install glove compartment door (06024) and check arms.
15. Connect vacuum supply hose to vacuum supply.
16. Install RH and LH lower instrument panel insulators.
17. Install two hush panels.
18. Unplug the heater core tubes and connect the heater water hoses to the heater core tubes.
19. Fill the cooling system with coolant to replace coolant lost during removal of the heater air plenum chamber.
20. Connect the battery ground cable. Refer to «Section 14-01».
ajsturm8
04-12-2010, 10:11 PM
How do I remove the dash from my 97 Lincoln TC Executive to get to the air heater plenuum assembly?
Towncar
04-15-2010, 01:32 PM
How do I remove the dash from my 97 Lincoln TC Executive to get to the air heater plenuum assembly?
The main bolts are under the right and left kick panels.
The main bolts are under the right and left kick panels.
homeskillet43
07-08-2010, 07:55 PM
How do I remove the dash from my 97 Lincoln TC Executive to get to the air heater plenuum assembly?
Take a look at this tech tip http://www.lincolnsonline.com/tech/00020.html.
Take a look at this tech tip http://www.lincolnsonline.com/tech/00020.html.
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