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Compressor cycles on and off blowing cold air runs for a while compressor cuts off will not cycle back on blows hot air

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  • Ford Master
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You have a leak, have the system recharged with dye, you are low on freon

Posted on Aug 04, 2010

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4 Answers

2004 sebring air conditioner stops and starts


Low freon will cause the compressor to short cycle, when the compressor runs the pressure in the low line is pulled down and the low pressure switch turns it off. Not running the pressure builds up and turns it back on. In the old days there was no low pressure switch, with no freon to carry the oil the compressor was destroyed.

Jun 28, 2014 | 2004 Chrysler Sebring

1 Answer

Compressor turns, holds a charge but does not blow cold air even when I turn on the outside air it blows warm air


OK, this is air-conditioning 1-0-1

You say that i holds a charge, and the compressore turns, but does the comprressor cycle on and off, as this is indicating that there is enough charge, and once there is low pressure detected, it turns the compressor on, and when it reaches a high pressure, the compressor cycles off.

Lastly, when engine running and AC on, if you feel the 2 pipes going in to the firewall, one should be hot, the other should be cold ???...is this happening ???

Mar 28, 2011 | Ford F-150 Cars & Trucks

1 Answer

Air conditioner starts out blowing cold air,apparently actuator sticks causing the system to blow very hot air. Hours later a/c blows very cold air again, only to blow wry hot air again after about 30...


1.)If your System is OVERCHARGED this Will Occure due to the EVAPERATOR FREEZING UP
2.) Also if your HVAC Control Modual is Malfunctioning this will Aslo Cause this Condition, It Controls the BLEND DOORS that OPEN for COLD or HOT AIR Look Into these Items and Also Look Into wethrt the A/C Compressor Cycles OFF when it GETS OFF this Will POINT at the HVAC CONTROLER if it Cycles Off When Set For A/C or COLD Air

Aug 19, 2010 | Chevrolet C1500 Cars & Trucks

1 Answer

Air conditioner starts blowing cold air then blows warm


This is most likely the cycling of the AC unit. As the compressor pressurizes the 134a Freon you get the cold air, once it reaches a certain pressure it cuts out. If you are low on Freon it will cycle out more often. Check your freon level with a gauge to see if your within the proper tolerance. If the compressor runs for a period and doesn't reach the right pressure it will cut out to keep from damaging your compressor so it is important to keep the correct amount of freon in the system.

Jun 21, 2010 | 2002 Dodge Stratus

1 Answer

My 2002 Expedition air conditioner will sometimes blow hot air and others cold air


I would check the following possibilities:
1. Is compressor clutch working? - You need to do this when the ac is blowing hot air only - locate compressor drive pulley on engine - rubber belt wraps around it. Start engine and set to max ac. When the ac is blowing hot air, look at the center of the compressor drive pulley using a good flash light - watch it for a while, it should be spinning with the pulley - this means the compressor is engaged. If not, the compressor is not engaged. If your ac is blowing hot air, then the compressor should be engaged and running (trying to cool). If it is not engaged, then your compressor clutch is probably going out. Could be low voltage to clutch, but more likely the clutch is worn out and only working some of the time. Note: if working normally, the compressor clutch will engage and disengage in cycles- but the air should always be cold. If clutch is bad, compressor would need to be replaced (sold as one unit). This is tricky to diagnose and could take some time - you need to do it when ac is blowing hot air but set to max cooling.

2. Low on refrigerant or refrigerant has moisture in it? If your ac blows cold initially after being off for a while, then heats up, and continues to regularly cycle back and forth between hot and cool air, then the system may be low on refrigerant or the refrigerant may have moisture in it that is freezing and restricting refrigerant flow. An a/c shop can check refrigerant level and even replace refrigerant if moisture is suspected.

Could be other issues, but I would start with these.

Good luck

May 07, 2010 | 1999 Ford Expedition

1 Answer

A/C is not blowing cold air


if the a/c compressor clutch is not engaging, you will never have any cold air. if the system has too much or too little freon in it, that will also mess it up. If system is undercharged, the compressor will short cycle, instead of staying on till the thermostat tells it to disengage. I suspect your problem is in the compressor and that is where i would look first.

Jun 25, 2009 | 1997 Plymouth Grand Voyager

1 Answer

1999 powerstroke air cond,blows cold at startup but after about 10 minutes it blows hot then it will blow cold again.


After the A/C turns hot , check to see if compressor is still cycling. If not the system may need recharging.

Jun 22, 2009 | 1999 Ford F250 Regular Cab

1 Answer

99 F250 diesel: A/C blows cold (fully


I think what happens is that you're burning out the compressor. If you got the windows down while you're blowing the a/c? it's working over time which is why they have two cycles. The image that displays the circle motion is meant for the windows to be up and the charge will last longer and with the windows down...click the one that shows outside air coming into the car. It might not be as cold as the other option but at least you'll have some cool air while you're at it.

Jun 08, 2009 | 1999 Ford F250 Regular Cab

1 Answer

A/c problems


check the dryer maybe its blocked

Aug 04, 2008 | 1996 Jeep Grand Cherokee

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