Question about 1999 Oldsmobile Alero

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Ac will not work...heat works but ac will not..air comes out but it is not cool and when i switch vent from feet to window it does not work...

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Most likely your A/C gas has run out or your A/C compressor is faulty. do you feel a drop in power when you engage the air conditioning?

Posted on Jun 17, 2009

  • Caleb Judd Jun 17, 2009

    There will be a screw cap on one of you A/C metal pipes under the hood. unscrew it and briefly press the needle in the middle to see if there is gas in the system.


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2 Answers

Vents won't blow hot or cold air. Comes from defrost and feet when you put fan on.


It's the vent actuator, it moves the baffle that changes the direction of the air flow.
Here is a video of a broken vacuum hose that creates the same problem.

It could also be a failed actuator.

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Heat comes tru passengers side console vents and normal thru drivers side


look under dash to make sure vent door is working proper

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Cool air wont work But heat works


Take to Midas,they also do a.c. work,they do mine and give a warranty and good price.

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My ac was working fine then one day it stopped and now only hot air blows out the mechanic said the ac is fine and works good but there is a vent door that switches the ac to heater and he said it was...


There is a blender that controls the air flow to go through the heater core for heat, and the evaporator for AC. It very well could be stuck.

You maybe able to try and get it to get unstuck by running the cars AC and switching from heat to AC back and forth and see if it gets unstuck. Just turn it on full blast and go from heat to cool.

If that fails, then you may need to service it. There should be a Lever Marked VENT under the dash, usually by the Brake and other pedals on the Driver's Side. Close the VENT and that will stop the Air from coming in and leave the A/C Blowing through the outlets(Vents).

I also read this online if you have an electronic climate control. "On climate control press off and heat button and let go quickly. Then press automatic. The display will start rotating eventually displaying a code 025,125 , 024 etc. Then press defrost to stop. You may hear blend door operating atb that time. It worked for my climate control."

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1 Answer

Heater control to feet has never worked 95% of the time since new


sounds like vent flap valve wire has come off (under dash beried in plastic cowling.....

Feb 14, 2010 | 2006 Honda CR-V

1 Answer

With AC on only the driver receives cool air. The passenger side receives hot air from the dashboard vents. The car was spent the summer stored in the Arizona heat. When started the headlights would not...


There's a possibility that the AC vents are jammed. Try to expose the system behind the dashboard and if nothing else works try to loose them by hand. Then lubricate the moving parts and also your mate could enjoy the cool.

Oct 24, 2009 | 1994 Buick Park Avenue

1 Answer

Air blows only on windshield even when placed on vents or feet


you may have abad slector door acuator.which is alittle motor bolted on the heater box.It move a door in box to direct air flow to right location.hope this helps.

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1 Answer

Ventalation system not working on my chevy blazer 1996


Is it your ventilation not switching, or your blower motor not blowing air?

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check the hoses connected to the vacuum advance ball, it has probably begun to decompose...

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