Question about 1997 Dodge Caravan

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Air conditioning no longer works

I parked the car with working ac about 9 months ago. I started it up last week and the ac doesn't work any more. I put a set of gauges on it and the low side measured about 110 and the high side about 130. I put a little freon in and the low side is about 120 and the high is about 140. Any idea what is wrong? The compressor clutch does turn on.

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  • pastro Nov 10, 2008

    I hooked up the gauges again and noticed that both valves were on. I shut one off and the pressures made sense, 25 and 150 or something like that. I put some r134a in and it works fine.



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It could be a loose compression compressor.

does the compressor sounds a little bit noisy? and increases as you rev the engine?

with the pressures that you gave, it seems that the compressor can not **** the gas from the lowside to transfer it to the high side. that is what we called loose compression.

i'm not sure if an oil charge could change the situation. it could be a mechanical problem already that can not be solve by adding oil to the system.

but i wonder why it would do that. it was just not used for 9 months.

good luck on the compressor, hope you can solve it by adding oil. if not, you have to replace the compressor.

tnx 4 using fixya,


Posted on Nov 08, 2008

  • francis rivero Nov 10, 2008

    ok..that's good. i thought you got loose compression because of the pressures that you gave. it's a good thing that the valves were just both open.

    glad to hear you have it running now.

    tnx 4 using fixya,




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