A/C Unit no power

1995 NISSAN TRUCK
90,000 MILES
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POORMAN
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The A/C unit in my Nissan Pickup truck receives no power. When the A/C is turned on, there is no power to the compressor. What are the probable causes to this? Thank you.
Jun 25, 2012 at 9:22 PM
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SATURNTECH9
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The first thing you have to check is the ac pressures if there too high or low the ac compressor will be disabled.
Jun 25, 2012 at 9:26 PM
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POORMAN
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Hey saturntech9,
What would be a normal ac pressure? I'm not sure if the reading I am getting is too high or too low.
Jun 25, 2012 at 9:33 PM
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SATURNTECH9
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The pressure with the ac compressor off should be around 80-100 psi on the high and low side.
Jun 25, 2012 at 9:51 PM
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POORMAN
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How do you turn down the AC compressor?
Aug 12, 2012 at 10:13 PM
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SATURNTECH9
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You dont turn the ac compressor down.You still havent told me what the ac pressures are on the high and low side with the ac compressor off?
Aug 12, 2012 at 10:36 PM
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POORMAN
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I don't have a gauge for the high side, but the low side came out to be about 120 psi.
Aug 13, 2012 at 1:10 AM
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SATURNTECH9
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Thats enough pressure to let the compressor come on.Does the compressor come on?Also do you have a test light?
Aug 13, 2012 at 2:58 AM
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POORMAN
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The compressor does not come on.
Aug 24, 2012 at 8:37 PM