I have a V70- 2000- about 2 years ago my AC lights flashed and the AC would not work, had the motor replaced. Now my AC blows cold air, never very strong but in the afternoon, when the temp outside is hotter, the AC does not work as long. It continues to blow air but it seems to blow outside air. When I turn the AC off for a short time it then again blows cold air. I have had it to the shop and had 1/2-3/4 lb freon added. Can you help because it is still very hot where I live.

year make model in ALL questions please.

There may be air in the coolant system, especially after changing a thermostat. Did you burp it?

Google the following

year make model burping coolant system

year make model fuse box diagram

Sounds like a loose wire in the fan circuit

the heater vacuum motor and lines needs to be checked.Also get the blend door checked.

NO HEAT ON FLOOR VENTS

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As per your problem mentioned. There are few solved help links to troubleshoot these problems. Go through the list and Click the link below:----

2000 Toyota Avalon: No heat on Passenger Side?

http://whatisbyme.blogspot.in/2012/05/2000-toyota-avalon-no-heat-on-passenger.html

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No heat on Oldsmobile Silhouette?

http://technoanswers.blogspot.in/2012/02/no-heat-on-oldsmobile-silhouette.html

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Heater blows cold?

http://schematicsdiagram.blogspot.in/2012/02/heater-blows-cold.html

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Heat blows cold on drivers side and hot on passenger side?

http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html

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Hot air on the driver's side vents only?

http://repairhelpcenter.blogspot.com/2012/01/hot-air-on-drivers-side-vents-only.html

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Temperature gauge does not move and no heat when heater is ON?

http://technoanswers.blogspot.com/2012/01/temperature-gauge-does-not-move-and-no.html

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1992 Toyota Camry: A/C Control light Flashing and A/C not Blowing Cold?

http://technoanswers.blogspot.in/2012/04/1992-toyota-camry-ac-control-light.html

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No heat, blower blows only cold?

http://technoanswers.blogspot.in/2012/02/no-heatblower-blows-only-cold.html

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Ford F150 Ac only blows through defrost vents?

http://technoanswers.blogspot.com/2012/01/forf-f150-ac-only-blows-through-defrost.html

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Dodge A/C come out of defrost vents only?

http://technoanswers.blogspot.com/2012/01/dodge-ac-come-out-of-defrost-vents-only.html

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Ac vacuum line on dodge cummins?

http://technoanswers.blogspot.com/2012/01/ac-vacuum-line-on-dodge-cummins.html

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Ford ranger AC blows cold through defrost vents instead on cabin vents?

http://technoanswers.blogspot.com/2012/01/ford-ranger-ac-blows-cold-through.html

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2005 Chrysler PT Cruiser: A/C Blows Warm?

http://whoisbyme.blogspot.in/2012/06/2005-chrysler-p8t-cruiser-ac-blows-warm.html

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2009 Mercury Grand Marquis: A/C blows Cold From Defrost Vent Only?

http://whoisbyme.blogspot.in/2012/06/2009-mercury-grand-marquis-ac-blows.html

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AC not blowing through Vents on 2007 Chevy Trailblazer?

http://schematicsdiagram.blogspot.in/2012/04/ac-not-blowing-through-vents-on-2007.html

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Passenger side temperature is warm air out of dash vents?

http://schematicsdiagram.blogspot.in/2012/04/passenger-side-temperature-is-warm-air.html

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These will help.

Thanks.

Air Temperature Control Blend Door Failure No Heat

In all modern cars there is a tiny DC electric motor driven gear drive that moves a plastic door that blends heated and cooled air from the AC and the heater core, this is called (interestedly enough) the air temperature control blend door actuator. The motor that moves this door fails because the door starts sticking from warping, most common complaint is no heat but it can be no AC as well. To replace these parts (blend door and blend door actuator) you must remove the entire dash from the car. Always have this problem confirmed by a dealer or qualified repair shop as it is a very expensive repair.

I have the same problem starting on mine. The first answer above is totally wrong. The actuators that control the doors are 12 volt electric no vacuum. There are three actuators on the drivers side under the panel by the gas pedal. I haven't worked on mine so I can't tell you which one it is but all are the same part and interchangeable take a new one and try it in each position until it works.There is one in the center console and one under the passenger side by the blower motor the console is for rear HVAC and the passenger one is for recirculation after installation it will have to be calibrated . Turn ignition to ON not start push the power button and the recirculation button at the same time hold for 5 seconds lights should start flashing leave it for two minutes or the lights stop flashing. If they don't stop recalibrate until they do. If they won't stop drive for eight miles and it will stop on it own. (but not fixed)

Hello brad is my name,did you charge enough freon to the system,yes or no.get back brad.

If you dual climate control sounds like it the mode door actuator that controls driver and passenger temp. If it went bad again then there is something wrong with the mode door itself causing the actuator to short out

replaced clutch, driver ac belts on 2000 montero sport a/c is still not blowing cold any ideas

On the bottom of the air unit is the lever that changes temps. It likes to fall out of place.I propped mine back with a piece of half-inch copper pipe a couple of years ago.Remove glove box then panel on front side of console to access.

blower morter, look at fuse under the hood