Question about 1999 Chevrolet Blazer

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I charged my freon the compressor clutch turns but it still blows hot air

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You should check your refrigerant pressures. It is possible that, although the compressor shaft turns, the compressor may not be functional. It is also possible that there is a restriction in the refrigerant loop.

Posted on Aug 22, 2010

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2010 SONATA BLOWS HOT AIR


Make sure the compressor is turning - check out the compressor clutch for operation. Also check the operation of the thermostat which turns on/off the clutch.

Sure the freon is in there? If you have a nasty leak it will come out as fast as you put it in. Also check the low pressure shut off valve. If stuck in the open position the clutch will not activate the compressor.

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A/C blowing cold air when car is cold, but clutch disengages when car heats up


Low of freon, have it charged to proper lvls with CORRECT freon/refridgerant

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Arcondition blows hot air, freon in the blue and clutch on compressor engage


Make sure your blend door is closing all the way and that the actuator actually works.

Aug 23, 2012 | Cars & Trucks

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The a/c on my chevy corsica only blows hot air


Is the compressor working when the engine is running ?
Have you checked for power to the ac clutch and the freon charge ?

Jul 25, 2012 | Chevrolet Corsica Cars & Trucks

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Air Conditioner Not Functioning


It may still be low on freon. It can hold several cans.
High side should be around 250psi and low around 35 or 45psi at idle if system is charged.
If you raise engine speed the low can drop below 20psi and switch off the compressor if the system is low on freon.
Could be a restriction in the system, bad relay, or bad a/c compressor-clutch.

Jun 25, 2012 | 2006 Lincoln Navigator

1 Answer

The ac is blowing out only hot air


  1. Have your A/C's Freon pressure tested. If it is low, have it charged with new freon.
  2. If your Freon is at the correct level, your Compressor or Compressor Clutch may have gone bad.
  3. When you turn your A/C on, can you tell if the compressor kicks on? Usually you will feel a slight shudder from the engine, or you will hear the RPM's slightly raise and then level out. The temperature blend door may be stuck (if a/c compressor kicks-in)

Feb 21, 2011 | 2001 Honda Accord

2 Answers

My ac is blowing hot air even after I charge it. When I turn it on the compressor does not chip in but when I check it, it seem to be working fine. what could cause it to blow hot air?


Has your a/c system ever been completely replaced?If not then the freon you used was wasted(sorry to say).1994 has a/c systems which used R-12 freon.In 1995 the a/c systems were redesigned and use R-134a freon because it is less harmful to the environment.The 2 freons are completely incompatible for use with the other's system.Shops have to have special permits just to buy,sell,use,dispose of the R-12.If your system has been changed over,there is a leak and it needs to be checked out.
Good luck! Greg

Aug 19, 2010 | 1994 Volvo 940

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2003 COROLLA S AIR CONDITIONER BLOWS HOT AIR.5 DAYS AGO MECHANIC "CLEANED LINES AND PUT IN FREON" FOR $135.00. STILL BLOWING HOT AIR.


If it blew cold air after freon added and 5 days later blew warm, you may have a leak in the system. Also check and see if compressor comes on if not you may have an electrical issue, relay for compressor,coil on compressor, etc.......

Jul 24, 2009 | 2003 Toyota Corolla

3 Answers

A/c in jetta blows hot air, its been charged, compressor comes on.


you need to have it diagnosed by a professional. These are complicated systems even to a trained tech. You may be over or under charged, have a clogged expansion valve, have a leak or many other issues. This model has a rcv refrigerant control valve inside the compressor which regulates the pressure of the compressor. If you notice the compressor never shuts off like conventional auto a/c's do the only time the clutch works is when you turn it on or off. Can be complicated.

Jun 02, 2009 | 1998 Volkswagen Jetta

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