Question about 1998 Mercury Sable

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Air conditioning vents

My 1998 Sable's vents all across the instrument panel and the rear seat quit working. The defroster vents work and the floor vents work, but nothing in between. Any ideas?

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  • Anonymous Mar 16, 2014

    996 2004 instrument panel is working but looks like the LCD is actualy leaking/spreading outside of the actual digits it's a very small amount but spreading? this is my 3rd porsche never come across this before any ideas???

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  • 1,263 Answers

You have a servo motor that operates the blend air doors in your dash. this is probably the reason . you have to take it to a shop for them to replace it. disassembly of the dash without breaking it is difficult with out the right tools. please rate this solution thanks.

Posted on Aug 30, 2008

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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).

Oct 31, 2016 | Cars & Trucks

1 Answer

How to repair


i'd think that the vent adjuster knob/slider is not working correctly strip out the heater panel around the control knobs and check the vent direction is working properly either stiff operation so a little wd40 on the cable would probably do the trick or some thing causing the vent itself to not move

May 01, 2014 | 2004 Ford Crown Victoria

1 Answer

Air flow at middle instrument panel outlets not working.


sound like you are in defrost mode if air going to the window.you vent mode for air flow through instrument panel or bi level some air flow through instrument panel and some airflow direct to floor.your vechicle has climate control. dealership has to check out programmer to climate control in which dealership has to recalibrate check the programmer.

May 23, 2013 | 1998 Buick LeSabre

1 Answer

Why does my 1998 ford explorer stop blowing out of the front vents and start blowing hot air out of the floor vents and defrost vents when i start up a hill but when i get to the top it starts working...


Y You should check the filter goes on the floor vent.has to be change,and just in case it is a machine special to check air conditions,but not every one have it,the manufacturer or representative seller garage shop,they fixed but expensive

Sep 20, 2012 | 1998 Ford Explorer

1 Answer

The ac on my 1998 ford ranger only blows out the defrost vent and floor vent. How do I fix it?


Almost sounds like the actuators are inop. depending on which style you have, some are electrical motors and some are vacuum. These control the mode doors which move to deflect air to various vents.

Jul 03, 2012 | Ford Cars & Trucks

1 Answer

No heat or defrost in my 2000 mercury sable


If you are referring to the air won't blow through the defrost vents or on the floor, you may have a stuck or broken blend door actuator. This part diverts air through the different settings: defrost, vent, floor etc. If you aren't getting warm or hot air regardless of the settings, you may either be low on coolant or have a bad thermostat.

Oct 15, 2011 | 2000 Mercury Sable

1 Answer

The blower on my a/c on 2002 chevy trailblazer only blows from the floor vents and the defroster vents but not the dashboard vents how can this be fixed. Also, it only works on 5


It sounds like you have two problems. First a question though; Is your heating and air conditioning control on the dash automatic (has two knobs that rotate and a display screen in the middle), or manual (has two levers that move up and down for driver/passenger temp and a separate fan knob and mode knob).

In response to the vents being stuck on defrost and floor, from experience i can say that the most likely cause is the mode actuator has failed. If your battery has recently gone dead, that could have brought the problem to the surface. When the battery has gone dead, the heating and air conditioning controls relearn all the positions of the actuators behind the dash when the vehicle has been re-started. If there is a position sensor failing (which happens quite often) in one of the actuators, the heating and air conditioning controls won't be able to learn the correct position of the actuator and (in your case) defaults to the defrost/floor position.

The only way to fix that would be to replace the actuator. I would like to know what type of heating and air conditioning controls you have (manual or automatic) before i say anything on the blower only working on 5.

Aug 05, 2011 | 2002 Chevrolet TrailBlazer

2 Answers

Ac is blowing out of defrosterandnot panels in the dash. Air is cool cold air will blow out of rear seat panel/vent 1998 ford explored


The most common cause is a bad blend door actuator which controls air flow throughout the cabin. When air flow only flows from 1 section (either floor, vent, or defrost) it's an indication that the blend door actuator is either stuck or broken.

Jun 02, 2011 | 1998 Ford Explorer

1 Answer

Electrical problem under dash How do I remove dash?


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Instrument panel upper trim panel

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Instrument panel


  1. Disconnect the negative battery cable.
  2. Disable the Supplemental Inflatable Restraint (SIR) system.
  3. Carefully pry upward, using a small, flat-bladed tool, to remove the defroster grille.
  4. Remove the Sunload and Headlamp Auto Control sensors from the defroster grille.
  5. Working through the defroster grille opening, remove 3 upper trim panel retaining screws.
  6. Remove the heater/air conditioning vents from the front of the instrument panel by releasing the tab on each side from inside the vent and pulling out.
  7. Working through the vent openings, remove 4 upper trim panel retaining screws and remove the upper trim panel.
  8. Remove the instrument cluster.
  9. Remove the right and left A/C vent trim panels.
  10. Open the trap door in the rear of the glove compartment and remove the passenger inflatable restraint wiring connector from the retaining clip on the rear of the glove compartment assembly.
  11. Remove the 4 glove compartment-to-instrument panel retaining screws.
  12. Pull the glove compartment assembly outward enough to access the wiring connectors for the glove compartment switches. Label and detach the wiring connectors.
  13. Remove the glove compartment assembly from the instrument panel.
  14. Remove the retaining screws and courtesy lamps from the right and left sound insulators and remove the sound insulators.
  15. Remove the steering column opening filler trim by grasping at the front and rear edges and pulling downward.
  16. Remove the 4 retaining bolts and the steering column opening bracket.
  17. If equipped with full console, remove the console.
  18. If equipped with mini console, remove the radio.
  19. Remove the headlamp switch module.
  20. Remove the 2 bolts and the hood latch release.
  21. Move the driver's seat to its full rearward position.
  22. Remove the steering column.
  23. Remove the 8 instrument panel retaining screws, detach the wiring connector at each side of the instrument panel, and remove the shims at the lower mounting screws.
  24. Remove the instrument panel with the aid of an assistant.
To install:
  1. With the aid of an assistant, position the instrument panel in the vehicle.
  2. Attach the wiring connector at each side of the instrument panel, install the shims and the 8 instrument panel retaining screws.
  3. Install the steering column.
  4. Install the hood latch release with the 2 bolts.
  5. Install the headlamp switch module.
  6. If equipped with mini console, install the radio.
  7. If equipped, install the console.
  8. Install the steering column opening bracket and the steering column opening filler trim.
  9. Install the right and left sound insulators.
  10. Position the glove compartment assembly and attach the wiring connectors to the switches.
  11. Push the glove compartment into place and install the retaining screws.
  12. Place the passenger inflatable restraint wiring connector on the retaining clip on the rear of the glove compartment assembly and close the trap door.
  13. Install the right and left A/C vent trim panels.
  14. Install the instrument cluster.
  15. Position the upper trim panel on top of the instrument panel, making sure the sensors are through the trim panel.
  16. Install the upper trim panel retaining screws through the heater/air conditioning vent openings.
  17. Gently push the heater/air conditioning vents into place.
  18. Install the upper trim panel retaining screws through the defroster grille opening.
  19. Install the Sunload and Headlamp Auto Control sensors to the defroster grille.
  20. Gently push the defroster grille into place.
  21. Enable the SIR system.
  22. Connect the negative battery cable.

Dec 01, 2009 | 1995 Cadillac DeVille

1 Answer

97 Sierra no heat on passanger defrost or floor


I assume you have the dual climate control feature on your truck. it sounds like you have door problems. The heating system has several doors inside the box and duct work that divert the air from defrost to face and feet...i'm not 100% sure if the ones in your truck are electronic or vaccum, but i think they are electronic. From time to time the actuators that control the door go out, as every electric motor does. You need to find the ones that have quit and replace them. It is possible that the arm(s) on the actuator(s) have broken loose from the doors and are working but not pushing or pulling the doors properly...if might help to remove the front seats...just to help save your back....working under the dash is hard on your body....and it take a good half day to remove the dash, so working under it is actually less work.

Feb 28, 2009 | 1998 GMC Sierra

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