Question about 2006 Lincoln Mark LT

7 Answers

I have a problem with my heating/air conditioning control. No matter which feature I set it to (defrost,floor , floor-defrost, floor-panel) it always blows out of the dash panels and nowhere else. The blower works fine and the air conditioning, but it just won't switch over to a different area. The indicaters show up like they are supposed to. I don't know if this is electrical or mechanical.

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  • donaldalbrec Jul 09, 2010

    Is there a electrical relay or module somewhere like the fuseblock that I can check?

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7 Answers

You will need to first try and oil your blend door acuator. There is a technical service recall on this issue. (see info below) This part controls the flow of air to the vents and when it sticks open, the air flow can not be adjusted. If you lube it and it still don't work, you will need to replace it. Click on the link below to view the part you will need:

http://cgi.ebay.com/ebaymotors/Temperature-Blend-Door-Motor-Lincoln-Mark-LT-04-09-10-_W0QQcmdZViewItemQQhashZitem35a581748aQQitemZ230409991306QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories


GRINDING NOISE FROM CLIMATE CONTROL— TSB 08-8-9
CHANGING AIR DISTRIBUTION MODES—BUILT
AFTER 11/29/2005
FORD: LINCOLN:
2005-2008 F-150 2006-2008 Mark LT
5. Clean all existing lube from cam. ISSUE
Some 2005-2008 F-150 (excludes Heritage) and 6. Liberally apply Motorcraftâ PTFE Lubricant to
2006-2008 Lincoln Mark LT vehicles built after the cam tracks. (Figure 2)
11/29/2005 may exhibit a grinding noise from the
climate control system while changing air
distribution modes.
ACTION
Perform the following Service Procedure to correct
the condition.
SERVICE PROCEDURE
1. Set control head to panel mode.
NOTE
DO NOT ENERGIZE THE MODE DOOR MOTOR
WITHOUT IT BEING CONNECTED TO THE
UPPER PLENUM.
Figure 2 - Article 08-8-9
2. Leaving the motor plugged in and installed to
7. Reassemble components in reverse order of the cam plate, remove the four bolts that attach
removal. the cam plate to the upper plenum. (Figure 1)
8. Cycle the control head from panel to defrost
mode a few times until the noise is eliminated.
PART NUMBER PART NAME
XG-8 Motorcraftâ PTFE Lubricant
WARRANTY STATUS: Eligible Under Provisions Of
New Vehicle Limited
Warranty Coverage
IMPORTANT: Warranty
coverage limits/policies are
not altered by a TSB.
Warranty coverage limits
are determined by the
Figure 1 - Article 08-8-9 identified causal part.
3. Remove cam plate.
4. Remove cam.

Posted on Jul 10, 2010

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  • Master
  • 11,896 Answers

That would be a problem with the blender door which is very common, or the motor that moves the door depending on which setting you have it on. The bad part is that the door is inside the venting behind the dash panel and is a pain to get to. The doors can get stuck in one position.

Posted on Jul 09, 2010

  • Nate Stansfield
    Nate Stansfield Jul 10, 2010

    Not that I can recall. This is what it consist of:



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  • Lincoln Master
  • 1,851 Answers

Hi,
These things can drive one crazy for a little while. The good news is - there is a fix. This is not a job for the amateur as the dash has to be at least partially removed and then the diagnoses can be completed. Your question as to mechanical or electrical is impossible to tell until you get to both units. Both units are under that wonderful dash. These fixes are usually relatively inexpensive IF left to a pro. The problem is that even with the dash off [ and it is crazy hard to get right - ] you would not know where to begin. Please - leave it a professional to remove and repair the unit. You will thank me in the end.
Thanks
Gary @ Fix Ya

Posted on Jul 09, 2010

  • Gary Rice
    Gary Rice Aug 31, 2010

    Hi,
    Did you ever get this problem solved? What was the culprit?

    Gary @ Fix Ya

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  • Lincoln Master
  • 6,826 Answers

This is probably mechanical. There may be a vacuum hose detached behind the dash board in the climate control area. This prevents the vacuum motor from operating the flapper that switches the air flow from vents at chest level, to heater at the floor and defrost on the windshield, and combinations thereof.

If you don't hear the vacuum motor operating many times this can point to a malfunction in this system as well.

Whether it is electrical or mechanical doesn't seem to lower the labor cost of determining what is actually occurring in your situation.
---
Poor Heater System Performance CAUTION
Check all fluid levels and adjust as needed, before operating vehicle for extended periods at idle.

  1. Start the engine.
  2. Idle the engine until the thermostat opens (upper radiator hose will be hot) Is the engine at normal operating temperature (approx. 200° F)? If yes, go to the next step. If no, go to step 16.
  3. Set the mode selector to FLOOR mode.
  4. Set the heater control selector to the warmest temperature setting.
  5. Set the blower speed the lowest setting.
  6. Carefully feel the inlet and outlet heater hoses at the heater core. Is the inlet heater hose significantly hotter than the outlet heater hose? If yes, go to step 14. If no, go to the next step.
  7. Set the mode selector to PANEL mode.
  8. Select the maximum blower speed.
  9. Select the warmest temperature setting.
  10. Place a thermometer into the center I/P PANEL air outlet and affix a second thermometer to the heater core outlet heater hose.
  11. Record the temperature at the center I/P PANEL air outlet and at the heater core outlet heater hose. Are the two temperature readings about equal? If yes, go to the next step. If no, go to step 13.
  12. Inspect and repair the cowl, cowl area, recirculation door, and the HVAC evaporator/heater core case for cold air leaks. Repair any problems found, go to step 17.
  13. Inspect the temperature door operation. Repair any problems found, go to step 17.
  14. Turn OFF the engine. Back-flush the heater core. Start the engine. Select the FLOOR mode and the lowest blower speed. Select the warmest temperature setting. Feel the temperature of the inlet and outlet heater hoses at the heater core. Is the inlet heater hose feel significantly hotter than the outlet heater hose? If yes, go to the next step. If no, go to step 17.
  15. Replace the heater core. When the repair is completed, go to step 17.
  16. Check for low engine temperature problems, Repair or replace as needed, go to step 17.
  17. Operate the system in order to verify the repair. If the system operates properly, the repair is complete. If the heater still does not work properly, repeat the entire procedure.
Insufficient Defrosting CAUTION
Check all fluid levels and adjust as needed, before operating vehicle for extended periods at idle.
  1. Start the engine, select the DEFROST mode, and select the maximum blower speed. Does sufficient air flow from the defroster outlets? If yes, go to the next step. If there is insufficient airflow, go to step 9.
  2. Measure the engine operating temperature. Does the engine reach normal operating temperature (approx. 200° F)? If yes, go to the next step. If the engine does not reach normal operating temperature, go to step 7.
  3. Select the minimum blower speed. Select the warmest temperature setting. Carefully feel the inlet and outlet heater hoses at the heater core. Is the inlet heater hose significantly hotter than the outlet heater hose? If yes, go to step 10. If the hose temperature feels approx. the same, go to the next step.
  4. Test the operation of the A/C compressor clutch. Does the A/C compressor clutch engage? If yes, go to step 6. If the compressor clutch does not engage, go to step 5.
  5. Inspect A/C compressor clutch and controls. Repair or replace as needed, go to step 13.
  6. Determine if the A/C system is operating within specifications. If yes, go to step 8. If no, go to step 11.
  7. Check the low engine temperature problem. Repair any problems found, go to step 13.
  8. Inspect for correct operation of the recirculation door. If the door is operating correctly, go to step 13. If the door is not operating properly, go to step 12.
  9. Check air delivery system. Repair any problems found, go to step 13.
  10. Check the heater core for blockage. Repair or replace as needed, go to step 13.
  11. Check A/C performance. Repair or replace as needed, go to step 13.
  12. Repair the recirculation door concern. When the repair is complete, go to step 13.
  13. Operate the system in order to verify the repair. If the system is operating properly, the procedure is complete. If the system is still not providing proper defrosting, repeat the entire test.
---
Also, this might help understand what the climate control electronics looks like behind the bezel:

Removal & Installation To Remove:
I have a problem with my heating/air conditioning - ford-10-00-3011.gif

  1. Remove the finish panel from the center of the instrument panel.
  2. Remove the screws and climate control assembly.
To Install:
  1. Install the climate control assembly and screws.
  2. Install the instrument cluster finish panel.
prev.gif next.gif

Posted on Jul 08, 2010

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  • Master
  • 2,272 Answers

Either there is a vacuum leak on the vacuum line or the doors are blocked from where the air enters the other areas or the actuator which moves the door is blocked or broken .It has to be checked. Inspect the small vacuum line that runs between the battery and the firewall.
It usually is the culprit.

it is the one behind the battery that runs into the firewall. If you are not able to test or locate the leak then easy way is to take the car to any local garage and get the vacuum leak tested.Its called the pressure test and the leak will be located in few minutes if any.Any local car garage will get it done. To get the picture .Please check fig mentioned below:--Its a bluish grey color line that you have to check for any leak.The line touching the pink wire.The grey color u shaped. I have a problem with my heating/air conditioning - bb043ea.jpg
Thanks. Keep updated for any more query. You can rate this solution and show your appreciation.


Posted on Jul 08, 2010

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  • Master
  • 6,784 Answers

Hi. The vents inside your vehicle are controlled by a cable, electrical servo or vacuum servo(in your case;electrical servo). If the temperature blend door is not functioning properly it will cause warm air from the heater to exit the vents or the directional patterns will be fixed to one area of flow(stuck in a particular directional flow). To check this, start the car and allow the engine idle, next turn the blower motor speed on low, switch the temperature control from warm to cold while your ear is close to the vents. You should hear the door move inside the heater box as it swings from open to close. If not, inspect for a vacuum leak or a shorted motor in the servo areas inside the dash. repair the leak or replace the servo motor, if needed. You can also preform this test while switching the directioal flow from defrost to panel or floor. There should be some sort of movement within the dash, signaling that your servos are functioning. if not, the servos or control module will be suspect.

Posted on Jul 07, 2010

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  • Lincoln Master
  • 11,800 Answers

Actually it might be both: the air is routed thru pipes inside the dash by some flaps that open and close; these flaps are electrically commanded. In your case that flaps are stuck and without any testing noone can say for sure if the problem is mechanic or electric. But because it looks like the air routing system is stuck on one setting an electrical fault in the controller is almost sure. This will require a hands-on approach, the car must be seen by a specialist, time to take it to a dealer to remove the central console and test the system.

Posted on Jul 07, 2010

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Posted on Jan 02, 2017

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Need pitcure of vaccum lines on 1999 Ford Ranger v6 3.o air and heat blows only threw the defroster.


26392097-cvaukpwazi2vnl4fgradjhua-2-2.gif

Item Part Number Description 1 18A318 Vacuum Control Motor-, Panel/Defrost Door 2 18A478 Panel/Defrost Door (Full Vacuum Position) 3 - Defrost Air Flow 4 - Side Window Demister Air Flow 5 18B545 Temperature Blend Door (Full Heat Position) 6 19860 A/C Evaporator Core 7 19A813 Air Inlet Duct Door (Full Vacuum Position) 8 - Outside Air Inlet 9 18A318 Vacuum Control Motor-, Air Inlet Duct Door 10 - Recirculated Air Inlet 11 18527 Blower Motor 12 19A566 A/C Vacuum Reservoir Tank and Bracket 13 - Vacuum from the Engine Intake Manifold 14 19B888 A/C-Heater Function Selector Switch 15 - Vacuum to the 4x4 Hub Solenoids 16 18495 Water Diverter Valve (Full Vacuum Position) 17 18476 Heater Core 18 18A559 Floor/Panel Door (Full Vacuum Position) 19 - Floor Air Flow 20 18A318 Vacuum Control Motor-, Floor/Panel Door 21 - Panel Vent Air Flow

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Tip

Tips for operating Air conditioning system on Toyota Hilux and someother...


To cool off your Toyota after it has been parked in the hot sun, drive with the windows open for a few minutes. This vents the hot air, allowing the air conditioning to cool the interior more quickly.

Make sure the air intake grilles in front of the windshield are not blocked (by leaves or snow, for example).

On humid, do not blow cold air on the windshield. The windshield could fog up because of the difference in air temperature on the inside and outside of the windshield.

Keep the area under the front seats clear to allow air to circulate throughout the vehicle.

On cold days, set the fan speed to high for a minute to help clear the intake ducts of snow or moisture. This can reduce the amount of fogging on the windows.

When driving on dusty roads, close all windows. If dust thrown up b the vehicle is still drawn into the vehicle after closing the windows, it is recommended that the in intake be set to FRESH and the fan speed to any setting except "OFF".

If following another vehicle on a dusty road, or driving in windy and dusty conditions, it is recommended that the air intake be temporarily set to RECIRCULATE, which will close off the outside passage and prevent outside air and dust from entering the vehicle interior.

HEATING

For best results, set controls to;
Fan speed ---- Any setting except "OFF"
Temperature----Towards WARM (red zone)
Air intake ---- FRESH (outside air)
Air flow ---- FLOOR
Air conditioning ---- OFF

For quick heating, select recirculated air for a few minutes. To keep the windows from fogging, select fresh after the vehicle has been warmed.

Press the "A/C" button on for dehumidified heating.

Choose floor/windshield air flow to heat the voltage interior while defrosting or defogging the windshield.

AIR CONDITIONING

For best results, set controls to;

Fan speed --- Any setting except 'OFF"
Temperature --- Towards COLD (blue zone)
Air intake --- (outside air)
Air flow --- PANEL
Air conditioning --- ON

For quick cooling, move the air intake selector to recirculate for a few minutes.

VENTILATION

For best results, set controls to;

Fan speed --- Any setting except 'OFF"
Temperature --- Towards COLD (blue zone)
Air intake --- (outside air)
Air flow --- PANEL
Air conditioning --- ON

DEFOGGING

The inside of the windshield

For best results, set controls to:

Fan speed --- Any setting except 'OFF"
Temperature --- Towards WARM (red zone) to heat; COLD (blue zone) to cool
Air intake --- FRESH (outside air)
Air flow --- WINDSHIELD
Air conditioning --- ON

The outside of the windshield

For best results, set controls to:

Fan speed --- Any setting except 'OFF"
Temperature --- Towards WARM (red zone)
Air intake --- FRESH (outside air)
Air flow --- WINDSHIELD
Air conditioning --- OFF

On humid days, do not blow cold air on the windshield. The windshield could fog up because of the difference in air temperature on the inside and outside of the windshield.

DEFROSTING

The outside of the windshield

For best results, set controls to:

Fan speed --- Any setting except 'OFF"
Temperature --- Towards WARM (red zone)
Air intake --- FRESH (outside air)
Air flow --- WINDSHIELD
Air conditioning --- OFF

To heat the vehicle interior while defrosting the windshield, choose floor/windshield air flow.

on Feb 14, 2011 | Toyota Pickup Cars & Trucks

1 Answer

How do I remove the center console where the heater control switches are located on a 2006 Pt Cruiser GT


DESCRIPTION A manual temperature control (MTC) single zone type heating-A/C system or a manually controlled heater-only system is standard equipment on this model, depending on market.
To maintain the performance level of the heating, ventilation and air conditioning (HVAC) system, the engine cooling system must be properly maintained. The use of a bug screen is not recommended. Any obstructions in front of the radiator or A/C condenser will reduce the performance of the A/C and engine cooling systems.
The engine cooling system includes the radiator, thermostat, radiator hoses and the engine coolant pump. Refer to 7 - Cooling for more information before opening or attempting any service to the engine cooling system.

All vehicles are equipped with a common heater, ventilation and air conditioning (HVAC) housing (1). The heating-A/C system combines heating, ventilating and A/C (if equipped) capabilities in a single HVAC housing mounted within the passenger compartment beneath the instrument panel. The HVAC housing includes:
  1. Mode-air doors (2)
  2. A/C evaporator (A/C system only) (3)
  3. Recirculation-air door and actuator (A/C system only) (4)
  4. Blower motor (5)
  5. Mode control cable (6)
  6. Temperature control cable (7)
  7. Heater core (8)
  8. Blend-air door (9)
On heater-only systems, the A/C evaporator is omitted from the HVAC housing and is replaced with an air restrictor plate.
Based upon the system mode selected, conditioned air can exit the standard heater-only or optional heater-A/C housing through one or a combination of the three main housing outlets: defrost, panel or floor. The defrost and panel outlets are located on the top of the HVAC air distribution housing and the floor outlets are located on each side of the distribution housing. Once the conditioned air exits the HVAC housing, it is further directed through molded plastic ducts to the various outlets within the vehicle interior. These outlets and their locations are as follows:
  1. Defroster Outlet- A single large defroster outlet is located in the center of the instrument panel top cover, near the base of the windshield.
  2. Side Window Demister Outlets- There are two side window demister outlets, one is located at each outboard end of the instrument panel top cover, near the belt line at the A-pillars.
  3. Panel Outlets- There are four panel outlets in the instrument panel, one located near each outboard end of the instrument panel facing the rear of the vehicle and two located near the top of the instrument panel center bezel.
  4. Front Floor Outlets- There are two front floor outlets, one located on each side of the center tunnel near the dash panel.
  5. Rear Floor Outlets- There are two rear floor outlets, one located on each side of the floor panel center tunnel near the front of each rear seat foot well.
  6. REMOVAL
    WARNING: Disable the airbag system before attempting any steering wheel, steering column, or instrument panel component diagnosis or service. Disconnect and isolate the negative battery (ground) cable, then wait two minutes for the airbag system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the airbag system. Failure to follow these instructions may result in accidental airbag deployment and possible serious or fatal injury.


    NOTE: Illustration shown with instrument panel removed for clarity. (Refer to 23 - Body/Instrument Panel/BEZEL, Instrument Panel - Removal).(Refer to 24 - Heating and Air Conditioning/Controls/CONTROL, A/C and Heater - Removal).(Refer to 23 - Body/Instrument Panel/COVER, Steering Column Opening - Removal). 5. Remove the screw (1) that secures the temperature control cable (2) to the left side of the HVAC air distribution housing (3). 6. Disconnect the temperature control cable from the blend door pivot lever (4) and remove the cable from the vehicle.
    REMOVAL

    WARNING: Disable the airbag system before attempting any steering wheel, steering column, or instrument panel component diagnosis or service. Disconnect and isolate the negative battery (ground) cable, then wait two minutes for the airbag system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the airbag system. Failure to follow these instructions may result in accidental airbag deployment and possible serious or fatal injury. (Refer to 24 - Heating and Air Conditioning/Controls/CONTROL, A/C and Heater - Removal).(Refer to 08 - Electrical/Clock - Removal).(Refer to 08 - Electrical/Power Windows/SWITCH, Power Window - Removal).(Refer to 24 - Heating and Air Conditioning/Distribution/OUTLET, Air - Removal).

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My air condition and heat works on defrost only sometime comes out vents last seconds didn't matter were controller set


Not sure what year, make or model vehicle is in question, but the issue is due to an actuator that has gone bad. Sometimes referred to as a mode actuator or blend door actuator. This actuator controls where air/heat will blow from (defroster vent, forward vents, floor vents or combo, etc.). Good luck. Ron @ Speed-O-Repair.

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Reset climate control


Some are vacuum controlled ( most are ) and some electronically. Could be a vacuum hose connection, or faulty in dash control unit. try going to a in between setting and see if anything happens( though i doubt it ). A lot of models do not always put air condition air to the floor, mid area is common.Unless you use to get air to the floor, check owners manual for control settings...

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Climate Control - Heat and cool work fine. Air flow is directed to defrost /floor. No indication (Sound or sight) that the vacuum diaphrams are being activated. The display on the dash matches the...


Does your vehicle have manual or automatic climate control ? You system is stuck in floor an defrost mode ?

03 mercury grand marquis hvac air flow .-13qahwfdndst2y1hypmr2cdq-4-0.gif Item Part Number Description 1 18A318 Vacuum control motor-floor/defrost door 2 - Defrost air flow 3 18A478 Floor/defrost door 4 18476 Heater core 5 19860 Evaporator core 6 19805 Blower motor 7 - Outside air inlet 8 19A813 Air inlet door 9 18A318 Vacuum control motor-air inlet door 10 - Recirculated air inlet 11 18B545 Temperature blend door 12 18A559 Panel door 13 - Panel air flow 14 18A318 Vacuum control motor-panel door 15 - Floor air flow 16 - Vacuum from the engine intake manifold 17 19A563 A/C vacuum check valve 18 19A566 Vacuum reservoir tank and bracket 19 19980 EATC control
Pull the control panel an check for vacuum

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VACUUM APPLICATIONS CHART-ELECTRONIC AUTOMATIC TEMPERATURE CONTROL Switch Port Vacuum Harness Hose Color Func- tion Manual Override Selector Buttons OFF MAX A/C NORM A/C VENT FLOOR FLOOR/ DEF DEF 1 White Air inlet 2 Yellow Floor/ panel (partial) 3 Red Full floor 4 Blue Panel 5 Black
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1 Answer

Heat does not come out passenger side of the car but comes out drivers side


There is a blend door problem.

---
prev.gif next.gif HEATING AND AIR CONDITIONING Refer to Section 1 for discharging and charging of the air conditioning system. The heating system provides heating, ventilation and defrosting for the windshield and side windows. The heater core is a heat exchanger supplied with coolant from the engine cooling system. Temperature is controlled by the temperature valve which moves an air door that directs air flow through the heater core for more heat or bypasses the heater core for less heat. Vacuum actuators control the mode doors which direct air flow to the outlet ducts. The mode selector on the control panel directs engine vacuum to the actuators. The position of the mode doors determines whether air flows from the floor, panel, defrost or panel and defrost ducts (bi-level mode).

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1 Answer

1998 Chevy S10 pickup air condition compres is on instead of heat


First be sure that you do not have the controls set to defrost the windows since on just about all vehicles nowadays with the controls set that way the air conditioner will be turned on...even if it is not so warm outside. So...be sure that you do not have any of the controls set to defrost and that the heater is turned all the way on.

It sounds like though that the control for the vents is not operating properly. This is a combination of mechanical movements of the vent flaps and small "air motors" that operate the flaps. These air units are controlled by air vacuum taken from the engine compartment through tiny hoses. If the hoses get cracks, holes or come loose from their fittings then your vents will not move correctly so it is a matter of looking and tracing each one of the hoses to make sure they are fastened correctly, have not come loose and are not cracked or leaking. The problem can even be in the engine compartment where the hose(s) connect to the engine vacuum system...so it will take lots of looking carefully with flashlights etc....good luck.

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Climate Control buttons don't work


are you saying u can't change the air temperature? do the blower speeds work ok? can u change the locations the air comes from, i.e. dash registers, defrost, floor?

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Appears to be stuck in the defrost position and sounds like a possible vacuum leak to controls. Look on the firewall under the dashboard. Maybe you can see a vacuum diafhram with a small hose disconnecedt. Look on passenger side first.
If not, Chk to see if a vacuum hose going through the firewall from the engine compartment has come loose. good luck

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