Question about 1997 Chevrolet Lumina

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Air conditioning When selecting MAX A.C. from A.C REC.the air flow from the outlets ceases. Selecting A.C. REC. cold air comes out of the outlets at a normal rate and temp. as selected. All functions of the heating controls are O.K.

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You need the AC mode/function switch to be replaced, it controls the different modes the AC/Heater are set to and where the air goes within the air ducts..

Posted on Aug 03, 2008

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1 Answer

Air condition not cold


The cooling agent may not be working. I would check the wiring to see if there is a kink. If there isn't any air flow, check the basics like the outlet.

Elisa Jed ' http://www.jandsheatingandair.ca/en/services.html

Mar 20, 2014 | 1995 Lincoln Mark VIII

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

Air conditioner blows cool not cold air


- Keep the knob on RECIR and not FRESH.
- Put the air con ON, blower on max speed.
- Open the hood, inspect the inspection window glass located on the liquid line.
- If foam like bubbles are seen, charge the refrigerant gas, till the glass window is seen clear. Never overcharge the system.
- If the problem persists, check the following:
Refrigerant volume
Refrigerant pressure
Heater control base (for Hatchback)
Heater control base (for Sedan)
Air conditioning pressure sensor
Compressor and pulley
Expansion valve -
Air conditioning amplifier
ECM
CAN communication
The following diagram may help you identify the components.


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Feb 18, 2014 | 2000 Toyota ECHO

2 Answers

Toyota tundra floor heat quit


sounds like vaccuum line problem or vaccuum assist

Jan 13, 2014 | 2002 Chevrolet Tahoe

1 Answer

Bmw x3 2006 air conditionning system does not work properly. driver side is cold but not enough. center is lightly cold beside driver but no fresh air to passenger side. Passenger side is not cold. With...


you will have to inspect the blend doors. These are the ones that control the flow of the air in the AC duct. It is under the dashboard. There might be loose linkages or parts that you may just need fitting or a bad motor for the door.

Sep 26, 2011 | 2007 BMW X3 3.0si SAV

7 Answers

AC does not blow cold air Compressor Works evac and recharged system, replaced condensor,expansion valve front unit, filter dryer and pressures are 60 low 250 high side. Replaced compressor twice after...


Its possible that your vent controller is not working. Is the air coming out the defrost vents? If yes, this is the default when there is no vacuum to the switch. In this case, check the small plastic vacuum line that is connected to the engine intake manifold and going into the firewall. Make sure this line is connected to the manifold and the hose is not cracked. If this is good, go inside the car and see if you can trace that line to the control switch. If the line is good to the switch, see if you can pull the vacuum connector from the switch for troubleshooting. with the engine on, check for vacuum on the line from the engine with your finger. If the vacuum is there, your switch is probably leaking and needs to be replace.

A lot people
have the exact same issue, what has happened is the little door that opens and closes for your fresh and recirculate function is broken, the bad notice is that this job is very expensive because to fix involves removing the dash (run anywhere from US$ 700).

Keep in mind that... all vehicles are equipped with a common heater, ventilation and air conditioning (HVAC) housing. The system combines air conditioning, heating, and ventilating capabilities in a single unit housing mounted within the passenger compartment under the instrument panel. The HVAC housing includes:
- Blower motor
- Blower motor resistor block
- Heater core
- Evaporator coil
- Blend door and actuator
- Defrost door and actuator
- Mode door and actuator
- Recirculation door and actuator

Based upon the system and mode selected, conditioned air can exit the HVAC housing through one or a combination of the three main housing outlets: defrost, panel or floor. The defrost outlet is located on the top of the housing, the panel outlet is located on the face of the housing and the floor outlet is located on the bottom of the housing.

Once the conditioned air exits the unit housing, it is further directed through molded plastic ducts to the various outlets in the vehicle interior. These outlets and their locations are as follows:
- Defroster Outlet - A single large defroster outlet is located in the center of the instrument panel top cover, near the base of the windshield.
- 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.
- 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.
- Front Floor Outlets - There are two front floor outlets, one located above each side of the floor panel center tunnel near the dash panel.

The heating and air conditioning systems pulls outside (ambient) air through the cowl opening at the base of the windshield, then into the plenum chamber above the heating, ventilation and air conditioning (HVAC) housing. On models equipped with air conditioning, the air passes through the evaporator coil. Air flow can be directed either through or around the heater core. This is done by adjusting the blend door with the temperature control knob on the A/C-heater control located the instrument panel. The air flow can then be directed from the panel, floor and defrost outlets in various combinations using the mode control knob located on the A/C-heater control. Air flow velocity can be adjusted with the blower speed selector located on the A/C-heater control.

Hope this helps.

Jul 28, 2011 | 2003 Kia Sedona

2 Answers

When air comes on it goes to windshield then later to floor before coming out the front vents what would cause this?


Hi there,

There are 2 types of Air-conditioning fitted to vehicles:

1) Manual Air - this is where you turn your temp dial to either Cold (Blue) or Hot (Red) and the heater will continue produces the same temperature at all times, until you manually change the setting.

2) Auto/Climate Air-conditioning - this is the INTELLIGENT aircon system, with many sensors placed around the car's interior. This system allows you to select your desired temperature in degrees (e.g. 18 deg C). Once you have chosen your desired temperature, the system then measures the inside temp at each sensor location. The sensor readings are sent back to your aircon computer and this is where the magic happens:

The computer then directs a priority airflow to the areas of your vehicle which would enable the system to reach 18 degrees, in the shortest possible time (this is why airflow changes between various vent outlets). As the system approaches your desired temperature, you will notice the airflow will slow down just enough to maintain a comfortable 18 deg - this is why they call it CLIMATE aircon.

However, if you choose to override the vent direction (i.e. selecting face vents only), they system will take a couple of seconds to respond to your command.

Cheers,



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May 13, 2011 | Mercury Marquis Cars & Trucks

1 Answer

2005 Escape. Warm air comes through vent while selector is on cold. This is while on regular air flow selection.


Check to see if the temperature door is moving. When set on max the coolant is shut off to the heater core aloowing max cooling.

Nov 08, 2009 | 2005 Ford Escape

1 Answer

Fan doesn't come on in the variable setting. only when turned to the max. On max there is no cold air


Check the blower motor resistor pack is not faulty.
The resistor pack (for speed control) is usually located in the blower fan ducting in the air flow .

Sep 23, 2009 | 2002 Honda Odyssey

1 Answer

Temperature Control not working on 1999 Ford Explorer


Sounds like your temperature actuator is not moving or your temp door is broken. On max a-c ,coolant is shut off to your heater core allowing only cold air in.

Jan 16, 2009 | 1999 Ford Explorer

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