AC No Power to Compressor
Le Mans Master
Joined: Mar 2001
Posts: 6,638
Likes: 287
From: Ann Arbor Michigan
There is a low pressure switch (see attached schematic) that stops the compressor from engaging (no 12V to the clutch) if the Freon is low. It should be closed if you have enough Freon. Pull the connector and check that the switch is closed if not, you need a charge.
Gary
http://www.corvetteforum.net/c3/tune.../index16.shtml
Gary
http://www.corvetteforum.net/c3/tune.../index16.shtml
Thread Starter
Acct suspended by request 19 April 2011
Joined: Jul 2009
Posts: 478
Likes: 0
From: La Porte In
I have the store can of freon. Put the adapter on the hose. Reads right between blue and green. Showing freon. Is the thing accurate? What happens if I try to add freon without the compressor running?
Thanks
Thanks
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
If you want to be sure use your 12v testlight to check for 12 v on both sides of the low pressure switch. You will find the switch on the line thin line running down the passenger side fender,should have green wires or green and blue wires.
Check the link Duke put up.
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Race Director
Joined: May 2006
Posts: 16,528
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From: Dayton, Ohio
Instructor
Joined: Aug 2003
Posts: 104
Likes: 0
From: Newfane NY
Behind the RH dash is the blend door, Do the vents blow hot with the temp selector in full right position and back to cold when full left???
No change could be your temp selector cable.
With compressor running, system charged, and the lines not getting cold...Hummmm
Can you post a pic of the way you are testing the pressure???
No change could be your temp selector cable.
With compressor running, system charged, and the lines not getting cold...Hummmm
Can you post a pic of the way you are testing the pressure???
