Question about 1999 Ford Escort

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Ac compressor won't come on even when pressure switch connector is shorted. only blows hot air. ford 2005 crew cab

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Adjust the air gap on the compressor to specs.

Posted on Oct 26, 2008

Check both high pressure and low pressure switches if a/c still won't come on check resistance at the clutch your a/c clutch is bad and will have to be replaced.

Posted on Jul 24, 2008

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2009 chevy AVEO 5 ac blows hot air


The guage needs to read between 35/40 psi.. If its much higher you may be overfull, this causes it to not cool.. Fix by letting some freon out, then top it back to needed pressure.. If pressure is correct, it would be a clog in the system.. Usually an orafice tube or accumulator..good luck!

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The ac blows cold and then hot while driven


If you can duplicate the problem parked, see if the compressor is running when it stops blowing cold.
Could be low on freon, a faulty ac clutch, relay, or other electrical problem.

Aug 08, 2012 | 2003 Ford F250 Super Duty Crew Cab

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2003 Nissan Frontier 4 cyl, AC has stopped blowing cold air, how do I fix this?


Depends on the problem.
Is the compressor working when the engine is running ?
Is one ac line hot and the other cold ?
Have you checked to see if it is low on freon ?

Aug 01, 2012 | 2003 Nissan Frontier Crew Cab

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I have a 2001 Ford Mustang V6, the ac is blowing warm air. We checked the refrigerant and it is full. The ac compressor will kick on for a few seconds and then kick off. Why is the compressor not staying...


it's either low (in spite of your readings) or your a/c clutch is not working correctly or you have too big an air gap in the clutch.
First, just disconnect the 2 pin connector from the a/c pressure cycling swithc and jumper the 2 pins with a wire to force the clutch to stay engaged. See if it blows cold then, and stays engaged. You can run this way for about 15 minutes before you have to pull the plug.
report reulsts.

please don't forget to rate.

Sep 01, 2011 | 2001 Ford Mustang

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Ac started blowing hot air on my 2005 chevy z71 half ton crew cab ac blower was working fine just started blowing hot air


The seal package in your unit leaked out the freaon. It will have to be resealed again and recharged.

Jul 27, 2010 | 2005 Chevrolet Silverado 1500 2WD

4 Answers

A/C is blowing hot air. Freon is full, compressor


Not sure how you know if the freon is full without the unit running. There are a number of switches which can keep your A/C from coming on. There is a low pressure switch which is usually located on the larger line and sometimes located on a silver cannister (called an accumulator) which is the low side of a compressor circuit. There is also a high pressure cutout which is usually located on the back of the compressor unit. Both of these switches can be jumpered out to see if they are the reason for the compressor not working. You remove the two wire connector to either switch and place a small jumper wire between the two wires on the connector block. The other reason my be a low idle cutout switch and this will also usually be located near on on the compressor. You can also test it the same way as the other switches. If it is the low pressure switch then of course you will need to add freon which you can purchase from any auto parts store. They usually come with instructions and all the equipment needed to add in freon. If it is high pressure, then some of the freon should be recovered from the system by a technician. If is the low idle cutout then you will have to take it to a mechanic to understand why it is idling so low. Hope this helps.

Jul 16, 2010 | 2004 Kia Sedona

1 Answer

2005 Ford f 150 AC blowing hot air compressor not coming on. What should I cheek first.


The first thing to check is the pressures in the ac system. If it is too low on R134 the low pressure switch will prevent the compressor from turning on.

Jun 17, 2010 | 2004 Ford F150

2 Answers

1999 Ford F150 AC fully charged with freon is blowing hot air


there are few things you need to check out:
1. if the compressor is overcharged it will shut down and you won't get any cool air
2. the thermostat for your cooling system is bad
3. the link to adjust the temperature is too short (did you feel the switch loose when changing temperature from hot to cold)?
hope this helps.

Jun 06, 2010 | 1999 Ford F150 Regular Cab

1 Answer

2005 KA blowing hot air out when set to cold


start car.turn on air conditioner high cool .raise hood look to see if the compressor clutch is engaged and running.if yes your ac air door could be stuck closed or the air door vacuum actutator not receiving vacuum.a vacuum line is broken or off. or the control switch bad.that control the AC and heater mode. if compressor clutch is not engagged.check for power at compressor clutch.if yes compressor clutch coil open. or the air conditioner refrigerant R 134 is low take car to a private garage with a good reputation. they wont be expensive as the dealership.have them hook car air conditioner to a manifold gauge set to check your refrigerant low side and high side pressure.

Jun 24, 2009 | 1999 Ford Taurus

1 Answer

AC blows hot


I think you should check the air manifold on the control panel and try to find any broken or loose hose.
In addition, check the heat/cold dial knob, under the dash, there is a panel selector for hot air or cold air.
Also check for any broken vacuum hose under the hood.

Jun 07, 2008 | 2000 Ford F250 Super Duty Crew Cabs

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