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Air Conditioner

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Old Aug 3, 2011 | 08:18 PM
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Default Air Conditioner

Red 1996

Air not working. Final check was to jump pressure switch. When i do this, The AC clutch ingage. So, It's either the Pressure Switch or, Low R134. Two Questions...
1: What is th eeasiest way to check the switch
2: If i need to change the switch, will i lost R134 anyway ?

Thanks
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Old Aug 4, 2011 | 10:54 PM
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I would see if there is any R134a in the system first. Yes, if you remove the switch any refrigerant will escape the system. I do NOT suggest this. If you have a leak find it and fix it. You may need to recharge with some a/c dye in the system too and then use a black light and some yellow glasses to find the leak. You will need access to an A/C machine to do this the right way. Can be done "back yard" mechanic style, but I do NOT recommend. The EPA will NOT approve....
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Old Aug 5, 2011 | 03:46 AM
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I replaced one of my A/C switches without losing any freon. I don't remember the details, but I believe there's a Schrader valve in the fitting that the switch screws into.
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Old Aug 5, 2011 | 09:11 AM
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!. Check for codes:

http://www.corvetteactioncenter.com/...agnostic+Codes

2. The computer may need to be reset. Disconnect the battery for 30 seconds or more-then reconnect.
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Old Aug 5, 2011 | 01:26 PM
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Originally Posted by Wildride
!. Check for codes:

http://www.corvetteactioncenter.com/...agnostic+Codes

2. The computer may need to be reset. Disconnect the battery for 30 seconds or more-then reconnect.
Thanks good info. I didnt know about this.
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Old Aug 5, 2011 | 04:43 PM
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Always nice to have some gauges on there to see what kind of pressure you have in the system...
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Old Aug 5, 2011 | 04:55 PM
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Originally Posted by Cliff Harris
I replaced one of my A/C switches without losing any freon. I don't remember the details, but I believe there's a Schrader valve in the fitting that the switch screws into.
Been awhile but I think Cliff is correct

When you jump the switch does the compressor engage and the system cool? If so freon should be OK. If not then freon is most likely gone. If so I would go the dye route.

Last edited by Muffin; Aug 5, 2011 at 04:58 PM.
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