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post #1 of 3 (permalink) Old 03-22-2005, 08:16 PM Thread Starter
Join Date: Mar 2005
Posts: 16
Need A/C help

I just replaced my head gasket and now my A/C won't work all of a sudden. I'm not sure if it's electrical or what. The compressor won't cycle on at all. I went to Advance auto and bought a kit with a large can of freon with leak sealer and conditioner and a hose with a low pressure side gauge on it. When I put it on the low side line, it reads around 120...deep in the red should be around 40 from what I understand. Now this measurement is without the compressor even running at all. The AC is turned on and on high but the compressor won't cycle on at all and I still get this high reading. In fact it hasn't run in 2 months now, since the engine was apart for that long. (I got injured after taking off the heads and had to wait 2 months before I could reassemble everything). I was afraid to try to put in any freon for fear the can would explode in my face with that high reading.

After all that work doing the head gasket I thought I was finally done and saved a lot of money too and now this....any ideas? Any help would be greatly appreciated.


Sorry for multiple posting on this, I'm new here and I couldn't figure out how to delete the other post. I wanted to change the title.
stingray is offline  
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post #2 of 3 (permalink) Old 03-22-2005, 10:10 PM
Join Date: Dec 2002
Posts: 241
Dont worry about changing titles... we're smart people. I think. =]

Sounds like maybe the clutch is toast, or at least its not plugged in.
brokenmachines_e2 is offline  
post #3 of 3 (permalink) Old 03-22-2005, 10:52 PM Thread Starter
Join Date: Mar 2005
Posts: 16
It sounds electrical to me too. It's plugged in at the compressor, and the plug in the pressure switch is in. I cleaned the contacts on both too. Where are the rest of the electrical connections for the compressor? Is there a fuse or link or relay?

I'm concerned about the high reading on the low side, even though the compressors not running, doesn't make sense to me. BTW, it's r134a, not freon, I should have been more specific. I had it converted 3 years ago when the compressor and condenser were replaced.
stingray is offline  

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