A/C clutch issue? - General Technical Questions - Tech Section

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Posted: Fri Sep 21st, 2018 11:06 pm

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Undrstm8ed
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Recently, last couple days what seems to be the A/C clutch seems to kick on more and more and makes a rattling noise. I have not popped the hood as of yet to identify the exact noise but just wanted to pitch the thought and see what may be involved. Can the A/C clutch be replaced without having to depressurize the system on the Factory 93-97 compressor?

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Posted: Sat Sep 22nd, 2018 10:01 pm

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Bird76Mojo
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You may have a refrigerant leak if the A/C clutch is cycling more. If the clutch is badly worn then I suppose it is possible that it might unlock frequently and you're hearing it locking up again, but my money would be on a refrigerant leak or a partially clogged orifice tube/filter. If the orifice tube is clogging it can cause one "side" of the A/C system to be at higher pressures than normal, which can case cycling issues. AND, if that orifice tube is clogging up, then your compressor is eating itself up internally. (the internal compressor seals)

Your best bet would be to have a shop diagnose it for you. Hopefully you know of a good honest shop, because at many shops, working on the A/C system can run in to spending some serious money.

In the meantime, you might remove the power connection from the compressor and check the metal contacts inside of it. They get rusty quite easily and lose connection intermittently. Cleaning them with micro files or small picks might help and use some good electrical contact grease inside the connector.

GB :)

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Posted: Sun Sep 23rd, 2018 12:32 am

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Undrstm8ed
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Aware of the orifice tube thoughts.. All of that is new, or within a yr or two. The compressor however is near 25 years old. Its the only thing I didnt replace. A/C has been great for the last 2 years or so I've had it. And i'm far from the rust belt , not that its impossible but I keep the underhood and the truck itself pretty immaculate from rust concerns.

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