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Another A/C problem

 
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  #1 (permalink)  
Old 30 Apr 2008, 09:48 pm
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Join Date: Oct 2007
Posts: 14
Post Another A/C problem

On my 04 non turbo 4.7 pt. I am having trouble with the a/c not taking
any freon, I have the hose connected to the low side. The compressor is
kicking on and off while the a/c is on. I noticed that when the cooling
fan came on the air would get cooler and when the fan shut off it blew warm
air. I have a R-134 recharge hose with a gauge handle. The needle
would go over in the red meaning overcharged and when the cooling fan
comes on the needle would move down in the green sayin filled. I hope
someone can make some sence of what I'm trying to explain.
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Old 02 May 2008, 01:53 pm
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Location: Huntington Beach, CA, USA.
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Default Re: Another A/C problem

My first take is that you don't have enough r134 in the system to keep the compressor engaged. The low pressure switch keeps turning it off. You have to jump the low pressure switch to keep the compressor turning to fill the system.
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Old 02 May 2008, 10:37 pm
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Default Re: Another A/C problem

Ok I will try that and see what happens.
Thank you Cal
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Old 03 May 2008, 10:57 pm
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Default Re: Another A/C problem

Cal, where is the low pressure switch located?
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Old 25 Jun 2008, 08:36 pm
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Default Re: Another A/C problem

TTT TTT
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Old 25 Jun 2008, 09:41 pm
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Default Re: Another A/C problem

There's 2 switches that I know of....




Pressure Cycling Switch
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Old 25 Jun 2008, 09:56 pm
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Default Re: Another A/C problem

Thank you Crewzin, is it the one in the bottom pic? i unhooked the pressure
cycling switch and used a jumper wire but nothing happened.
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Old 25 Jun 2008, 10:03 pm
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Default Re: Another A/C problem

Sorry, I don't mess around with AC. Not sure which switch it is. CAL mentioned the Low Pressure Switch but the Haynes manual has no mention of that particular switch.
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