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Strange A/C problem.

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Old Mar 19, 2010 | 07:43 PM
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TYZ78F150
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From: Stafford, VA
Strange A/C problem.

last week the a/c wasn't getting cold, and I figured out I needed a can of freeon. So now the compressor cycles properly. The new problem is now the front a/c won't get cold unless the rear a/c is in use. Usually it's the other way around I know. So whats the deal?
 
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Old Mar 20, 2010 | 06:56 AM
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What are the pressures readings you are getting?
 
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Old Mar 20, 2010 | 07:38 AM
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Do you hear the compres cycling on and off? even with ac off? if so let me know.
 
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Old Mar 20, 2010 | 08:23 AM
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From: Stafford, VA
Originally Posted by housedad
What are the pressures readings you are getting?
Well when I have my guage hooked up to the low side on the accumulator, it shows 45 w/out the compressor running, and when the compressor kicks on, it slowly drops to 25. On my guage it shown 0-25 is green and "LOW", 25-45 is "FULL" and is blue. Seems to be cycling properly. I did notice that when the rear is turned on, the compressor runs constantly, which may be making the front colder. It shouldn't be that way though. Isn't it hard on the compressor to run constantly? I keep the can of freeon hooked up for a while to see if it will draw more in and it doesn't.
 
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Old Mar 20, 2010 | 08:25 AM
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From: Stafford, VA
Originally Posted by dadsexcursion
Do you hear the compres cycling on and off? even with ac off? if so let me know.
No. The compressor won't cycle until I turn it to A/C.
 
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