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Ac help

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  #1  
Old 07-17-2015, 04:00 PM
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Default Ac help

Ok so during the winter I had someone else (****ty shop in retrospect) swap my motor. Now my ac doesn't work and they went out of buiness so I can't ask him if he disconnected my ac lines or discharged my freon. I don't know what my next step is. Should I just take it to a reputable shop to have them vacuum the system and charge it?
 
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Old 07-17-2015, 04:57 PM
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Either that, or just pick up one of the recharge cans, with a Gauge, plug it in, see what it says......
 
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Old 07-17-2015, 05:26 PM
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I did. It says normal however the ac clutch keeps clicking on and off as if it's low on freon. I don't have the tools or know how to check the high pressure side
 

Last edited by drtydn; 07-17-2015 at 05:31 PM.
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Old 07-17-2015, 07:37 PM
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What does pressure say when the compressor kicks off?
 
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Old 07-18-2015, 03:29 PM
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15 psi but looks overcharged when it kicks on
 
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Old 07-18-2015, 06:46 PM
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Too low. That's why the compressor is kicking out.

Should be a chart on the side of the can, that tells you what low side pressure should be, for the given ambient temp. Keep added refrigerant until you get there.
 
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Old 07-19-2015, 08:12 AM
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The chart tells me to read it when it's kicked on, not off. And when it kicks on it reads too high
 
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Old 07-19-2015, 08:23 AM
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Default Ac help

My ram did that when I swapped out the condenser. I was filling it and it started cycling and would spike than shut off. It scared me but it took a whole other can actually before it leveled out
Also. Yes you always check while running so you read proper compressor pressure
 
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Old 07-19-2015, 09:34 AM
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Something is awry there then.. Pressure on the low side should go DOWN when the compressor is running. Which port are you plugging in to?
 
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Old 07-19-2015, 09:38 AM
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Default Ac help

If it doesn't have enough pressure the compressor can't pump it through and shuts back off. The compressor creates the low side with a orifice or valve and if there isn't enough pressure to activate the valve it spikes up and shuts off. It doesn't get enough pressure to lower the low side. I may be wrong but I've had that issue filling 3 vehicles up
 



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