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Air conditioner blows hot air gauge shows red

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  • Cars & Trucks Master
  • 21,873 Answers

Year make and model, and what gauge ?

Posted on Jul 20, 2013

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Posted on Jan 02, 2017

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lastech
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SOURCE: air conditioner blows hot cold and sometimes not at all why?

hello,seem you need to send your car to authorized dealer to scan the problem,maybe the solution is only synchronizing all the flap,ty

Posted on Apr 25, 2009

  • 192 Answers

SOURCE: air conditioner blows hot air from dash

On most cars when you push a button or slide a lever to change your choice of location where you want the air to blow out louvers move inside the dash to redirect the air to your chosen location. When you switch from heat to AC other louvers move. These louvers are often powered by vacuum lines running from the engine. If one of these louvers is stuck or if you have a vacuum leak in one of the lines it may be causing your problem.

Posted on May 12, 2009

  • 136 Answers

SOURCE: air conditioner blows hot air, checked coolant and it is full

There are a few different possibilities for a vehicle doing this. A low refridgerant level can, or a temp control on the dash is not operating properly.

Posted on May 18, 2009

  • 1348 Answers

SOURCE: air conditioner started blowing hot air

your a/c compressor is not working.
you have to have the system checked by an air conditioning place or the dealer as to what the cause is.

Posted on May 23, 2009

  • 91 Answers

SOURCE: after boost air conditioner started blowing hot air

BLOWING HOT AIR YOU MAY HAVE A RESTRICTION ON THE SYSTEM, OR MAYBE A REAL BAD LEAK THAT UR FREEON IS ALL GONE,

Posted on May 28, 2009

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1 Answer

Air conditioner blows heat, conditioner was charged, freon, checked relay switch, fuse, door blend alol fine still hot air, was told maybe a block in V shape hose is it temp control value Help


Only way to tell if A/C Evaporator Core Orifice tube is plugged is by looking at A/C gauge readings , An if it is plugged you more then likely need a new compressor , they become plugged with metal particles from worn out compressor. Your best bet would be to take your vehicle to a qualified repair shop .

Jun 27, 2016 | 1998 Lincoln Navigator

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I have a 2003 envoy and my air conditioner blows cold air on one side of panels and on other side it blows hot air?


your A/C may need freon....More likely R134a is the gas that will be working with your system.You will need a manifold gauge to check it ... A car will need 'topping up' once every 6 to 9 months if its used often .If its not used often possibly once every 3 to 5 months. The blue gauge should read from 35 to 40 PSI while the red gauge (high pressure) should be 200 to 225 PSI.

Mar 04, 2014 | Cars & Trucks

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Problem with heating up and staying heated.


Thermostat is sticking or heater core is blocked.do not keep running it or it is going to ruin the engine. It is running hot regardless if is blowing cool or hot air. Do not keep using the car.

Apr 16, 2017 | 1997 Oldsmobile Bravada

1 Answer

Suburban overheating and air conditioner blowing hot


If you have a viscous fan hub have it replaced as it is not working. The problem you have is that the engine is not driving the fan to draw air through the radiator when idling so the engine overheats . When moving the air flow from driving cools the radiator and so the temp goes back down. If you have electric fans have the codes read to find the fault or check why the electric fans are not working.

Jun 17, 2013 | Chevrolet Cars & Trucks

2 Answers

1990 dodge dakota 2.5 over heats temp gauge erratic


For car running hot and overheating issues, I suggest to you go through this help links. Click this link below and go through the troubleshooting procedure to take care of the problems: ----

temp gauge goes erratic? http://technoanswers.blogspot.com/2012/01/heater-blows-intermittently-and-temp.html

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Temperature gauge keeps fluctuating up and down close to red? http://technoanswers.blogspot.com/2012/01/temperature-gauge-keeps-fluctuating-up.html

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Car runs hot? http://howtobyme.blogspot.com/2011/11/car-runs-hot-in-traffic.html
-----------All types of car overheating problems and troubleshooting?

http://technoanswers.blogspot.com/2011/11/all-types-of-car-overheating-problems.html
Car freeze overnight and started overheating while driving?http://technoanswers.blogspot.com/2012/01/car-freeze-overnight-and-started.html-----------Engine Overheats and heater blowing cold?

http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

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Car overheats and Air blows hot at idle?
http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html
--------overheating? http://schematicsdiagram.blogspot.com/2011/12/buick-century-overheating.html
----------Car engine Overheats and transmission starts slipping?http://schematicsdiagram.blogspot.com/2011/12/car-engine-overheats-and-transmission.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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This details will help.Thanks.

Feb 07, 2012 | 1990 Dodge Dakota

1 Answer

Air conditioner cold then hot


If the A/C blows cold at first, then gets hot, it may be because there is air and moisture in the system. What happens is that as the thermodynamic cycle of moving heat goes on, water in the system will freeze at the expansion valve, stopping refrigerant flow.

If you put a proper set of A/C gauges on it, the low pressure side would show zero or a negative pressure, while the high side would be >150... Usually low should be between 25 and 45, but because the system is frozen up, nothing moves, so the compressor is acting more or less as a vacuum pump.


Solution:
Have a professional evacuate the system, replace the receiver/dryer, add a bit of oil and then charge the system.

Jul 10, 2010 | 1998 Dodge Ram

1 Answer

Air conditioner wont work


You need to check your freon level. Go to your auto parts store and pick up a can of freon with a gauge and follow the directions on the can.

Jun 07, 2010 | 1995 Nissan Maxima

1 Answer

Air conditioner not blowing cold air. We put coolant with gauge reading 25 lbs pressure. We think the compressor is coming on. The pipe coming out of the compressor is cool but, the air coming into the car...


Is the air actually blowing into the car?But it's just hot?It sounds like your blower motor is not turning to blow air.you have a fuse,check the switch that controls the blower,and the blower motor it self.

Jul 27, 2009 | Saturn L-Series Cars & Trucks

1 Answer

Air conditioner blows hot air . gauge shows full .


It needs to be re-gassed. Take the car to an Auto Mechanic to get the Air-Conditioning re-gassed. They might also need to check it for leaks to make sure the gas stays in.

Jul 26, 2009 | 1994 Mitsubishi Diamante

1 Answer

Air conditioner is not blowing cold air,


What pressure did you have? And Is the front of the compressor turning when you have this pressure. Also feel the two lines going to the compressor, one should be hot and one should be cold.

Jun 28, 2009 | 2000 Chrysler Town & Country

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