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Went to recharge my a/c on 2001 Dodge grand caravan with freon 134a,when I hooked up the the pressure gauge it registered 75 PSI on the low side so I did not add freon. what would cause the pressure to read in the warning area of the gauge? and how to fix it. The way I read the charts the pressure should be around 40 PSI.Also the Freon can was not attached to the filler hose equipped with gauge so it was not reading can pressure.

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Ac compressor not turning on when supposed to

Posted on Jul 03, 2016

Testimonial: "Compressor runs fine clutch engages and disengages thru cycles"

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What are the AC pressures supposed to be on a 2000 Monte Carlo?


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Can i recharge the air conditioning in my 2001 pontiac grand am se 2.4L myself


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AC compressor:


It will normally come on by itself once you add the 134a if doesn't come on by itself I'm thinking you have a bad pressure swith in which is locacted in the A/C line in itself up on the passenger side by the firewall you can uplugged it there and jumper the 2 contacts together if the compressor kicks on it is either a bad pressure switch or there still isn't enough 134a in the system.

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