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2002 suburban A/C only blows hot air. Blower motor works, compressor works (when by passing switch), pressure correct and no freon loss.

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

firenut119
  • 66 Answers

SOURCE: AC/Heater control problem

In the dash there is a part called the blend door and blend door motor. This allows you to have warm air, and not just cold AC or hot heated air. This motor goes out and whatever position it "dies" in is what kind of air you get. The part is relatitively cheap but the labor cost is huge, because the dash needs to be removed for access.

Posted on May 05, 2009

  • 74 Answers

SOURCE: 1999 gmc 1500 sierra truck v8

The clutch in compressor is controlled by a pressure switch. Start there.

Posted on Jun 25, 2008

j_del
  • 1586 Answers

SOURCE: A/C blowing hot air. Compressor

Could be the expansion valve. That's what allows the temperature to actually drop in the system - the contents of the AC system are under pressure, and are at a certain temperature. When the freon goes through the expansion valve, the pressure drops suddenly and dramatically, which "flash chills" the freon, allowing the air to blow cold. If it fails, you may get lukewarm air from the AC despite everything else working. Also though, check to see whether the AC evaporator fan (underhood) is working - on some cars, if it doesn't turn on, the compressor won't be run enough to cool the air.

Posted on Jul 29, 2008

ftw1952
  • 10319 Answers

SOURCE: 99 Suburban A/C Not working

The A/C pressue switch may be bad as well. Also the mode switch on the control head inside the vehicle. There are many other exsisting problems pertaining to a/c. I suggest a manual from Auto Zone for many faults can be noted especially wiring can be at fault

Posted on May 23, 2009

  • 14036 Answers

SOURCE: 2000 Ford Taurus AC compressor not working;

if compressor clutch dont kick in .it has a open in clutch coil.

Posted on Jun 01, 2009

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1 Answer

Will no freon prevent me from adding freon if the compressor wont engage without it


Sort of.
If the system is empty, you would need to jumper the low pressure switch to power the ac clutch to put the first can or two of freon in.
Keep in mind the system is supposed to be vacuumed out before adding freon, so if it is full of air you won't be able to put the full amount of gas in.

Sep 28, 2012 | 1999 GMC Suburban

2 Answers

The AC on my 2002 chevy S 10 just suddenly stopped blowing cold air. The freon is full and the compressor is coming on. Any advice would be helpful in this Texas heat. Thanks


If the freon is full and the compressor clutch is working,is the blower working, need more details, if it is, you could have a blocked orifice filter. or a bad high pressure switch located at the rear of the compressor.if the high pressure switch loses voltage or goes out, your cool air will come to a dead halt. check the high pressure switch for voltage. good luck!

Aug 08, 2011 | 2002 Chevrolet TrailBlazer

2 Answers

The air condition doesn't blow cool air when it's on. what could it be?


freon leak, check to see if compressor is kickin on, look under hood for a/c compressor. the front will move with the pulley if its working, ... if not working its low on freon or low pressure switch is bad,

Apr 02, 2011 | 1991 Lincoln Town Car

2 Answers

AC blows hot air but AC compressor works


if the compressor works and your freon is charged it may be the blower flapper door....disconnect battery for 10 minutes and then re-connect to reset the electronics that control the flapper

Jan 12, 2010 | 2001 Mercury Sable

1 Answer

Blows hot air clutch does not engage compressor. ac switch on fan blower on high replaced ac diode cause it kept blowing 10a fuse


you either have a power loss problem but more likley your low on refrigerant. if its low, there is numerous pressure sensors that will not allow it to engauge to protect the compressor. you got to put a gauge on it. standing system at 80"F should have about 80-90 lbs. standing pressure.

Aug 25, 2009 | 2002 Saturn L-Series

1 Answer

A/C -- Blower controls not working


usually you have a leak in the system low on freon this dual system take more than 2 pound of freon second the blower works only on high you need the blower motor risistor usually it is mounted next to the blower motor

Aug 08, 2009 | 2002 Chrysler Town & Country

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

3 Answers

A/C is blowing hot air


you may have a leak in your system or the ac condensor could be bad.

Jun 20, 2009 | 1997 GMC Safari

1 Answer

1999 gmc 1500 sierra truck v8


The clutch in compressor is controlled by a pressure switch. Start there.

Jun 25, 2008 | 1999 GMC Suburban

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