a/c not working..... do I need a tech to check.......?? - Saab 9-5 Bulletin Board - Saabnet.com
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a/c not working..... do I need a tech to check.......??
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Posted by Smeter [Email] (more from Smeter) on Sat, 21 Jul 2007 15:18:14 Share Post by Email
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The car in question is a 2000 9-5; 2.3 4 cylinder lpt.

I am trying to determine why the a/c is not cooling the air inside the cabin. When I hook up my a/c guages (Robin Air) with the acc unit set to "lo" on both driver and passenger side, I get about 34 p.s.i. on the low side. In my mind this tells me there is enough freon in the unit to cool it. So, the problem must lie with somewhere in the electrical portion of the system. I would like to check the following:

1) what signal the pressure sensor in the condensor is sending to the trionic
2) check temp sensor on the evap

How can I do this without using a tech2?

As always... any help would be appreciated.

TIA

posted by 70.48.231...

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