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A/C Problem. Cannot add freon. Blows hot air. A/C clutch does not engage.

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You should evacuate and then recharge the system sounds like there is air in the system

Posted on Jul 12, 2010

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2 Answers

Air conditioner blows hot but freon is full


Your compressor could be faulty. Check to see if it engages when you press the AC button with the car running.

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

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Air conditioning


It doesn't sound like you have low Freon, but you could. The clutch not engaging indicates low Freon. The fact that it works are all would indicate that it is not low on Freon. The only thing that would be wrong is the pressure switch is not working when it gets hot. The pressure switch works by shorting the float side connection to ground then there is enough pressure in the system.

Aug 03, 2012 | 2003 Dodge Caravan

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Just moved to AZ. and our ac does not work. when we turn it on it just blows hot air, clutch is not kicking in either, does that mean we need to get a new clutch or do we need freon or what.. thank you


You will need to add freon. Freon loss has most likley occured and if so, there is a leak somewhere in the system. The clutch will not engage if the freon level to too low.

Jun 30, 2011 | 1995 Jeep Grand Cherokee

1 Answer

My 2006 jeep liberty ac blows hot air and the clutch doesn't engage ,it turns ok with your hand.


Check fuses, if ok, then check for freon pressure, if low on freon, low pressure switch, will keep a/c compr. from coming on, so it don't get damage due to low on freon, recharge a/c system, if low and check for leaks.

Sep 08, 2010 | 2006 Jeep Liberty

1 Answer

What would cause AC clutch to not engage when ac is turned on 1999 Siverado Z71,It blows air but its hot air even when on max AC someone said that the clutch on commpressor wasnt engaging do you have to...


This could be a few things.
1- Check fuses for A/C
2- Check to make sure the unit has freon
You have a switch on the accumulator that is called a low pressure shut off switch. It prevents the compressor from running when the freon is low. I would suggest if it is not a blown fuse, have a certified A/C repair garage take a look at this.

Aug 25, 2010 | 1999 Chevrolet Silverado 1500

1 Answer

Air condirioner blows hot air 1996 dodge caravan se


Check to see if air conditioner clutch pump is engaging on engine. If it is you are probably low on freon.

Jul 29, 2010 | 1996 Dodge Caravan

1 Answer

My ac wont get cool.......it blows hot air and(caddy seville 95)


Below is a guide to troubleshoot and check system function. This can be done by most folks.

Look at the front of the ac compressor and have someone turn on the ac from inside the car. The front of the pulley(clutch) will spin when turned on.

If it does not spin, the low pressure switch (LPS) is not satisfied. Meaning there is not enough freon in the system to operate the system. Means low freon capicity because of a leak.

The LPS can be jumpered to cause the compressor to run (clutch to engaged) which will draw the freon in the system.

The LPS is usually a two wire sensor on the suction of the compressor. (between evaporator and compressor) Unplug the sensor and install a jumper, this will engage the clutch. Connect a new can of freon
and fill to system capacity.

The capacity of the ac system will be on a label under the hood, do not overfill. Probably about 2 lbs. Local parts stores (Auto Zone and Advance) will have freon with stop leak. This may help the leak. They also make a freon with a UV dye. I always add a single can with dye so that if stop leak does not work I can find the leak in the future.

The system should be filled until suction pressure is about 30 to 38 psi..

Remember the flow for the a/c system is :
1. From the compressor a high pressure (HP) gas goes to the condenser in front of the radiator.
2. From the condenser a HP liquid goes to an expansion device (orifice tube or expansion valve)
3. From expansion device the low pressure gas enters the firewall to the evaporator.
4. From evaporator the low pressure liquid/gas mixture goes through the dryer2_bing.gif back to the compressor suction.

May 29, 2010 | 1995 Cadillac Seville

2 Answers

Air conditioning doesn't work. only blows out hot air


Check and see if the clutch on the front of your compressor engages. If not it could have a leak and not have any freon in it. If it has freon then you have an electrical malfunction on the ac system.

May 18, 2010 | 2002 Mercury Sable

1 Answer

A/C Blows hot air Cant tell if compressor is working


gm was designed that when the freon gets low the clutch will not engage giving you warn air
top up system with freon and you will be on your way

Jun 30, 2009 | 2000 Chevrolet S-10

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