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a way to test a not installed car a/c compressor?

daffy_gurl 1983 asked:


wanting to buy a used a/c compressor off a “friend of a friend’s neigbour” (b/c i am on a fixed budget and the baby can’t stand teh heat)but i wanna make sure the thing works before i pay him $$ is there a way to hook it up to something(battery or tester thingy ) to get to work or a way to get a volt reading or something ? is there something in particular i should look for to make sure it will run?
ok i mention i was on a budget therefore$ 200 is out of the question, my dad and brother would be doing it since my brother as access to a lift and full use of a shop. we also do our own work to a our cars so i am sure they would know what is needed to install the parts. i just wanted to ask since everyone here is sleeping and i am bored and don’t want to wake them up to ask them a random question
Ebay also has some good deals so i might just go there..

2 Responses to “a way to test a not installed car a/c compressor?”

  1. Firebird says:

    No. Stop right where you are. Who’s going to install this? What are you planning to do about getting it charged up? It’s going to cost you quite a bit of money just to install the junky compressor.

    Before you do anything else, go to acsource.net and look up the cost of brand new compressors. Most cars it’s $200 or so.

  2. UCANTCME says:

    THE LARGER PORT OF THE COMPRESSOR IS THE SUCTION AND YOU CAN CLOSE OFF THE OTHER PORT WHICH IS THE DISCHARGE AND TURN THE FRONT HUB OF THE CLUTCH.

    THE SUCTION WILL **** AND THE DISCHARGE WILL BLOW.

    CHECK THAT THE HUB WILL ENGAGED BY GROUNDING THE CASE AND RUNNING A HOT WIRE TO THE CLUTCH COIL, THE HUB SHOULD BE PULLED TOWARD THE CLUTCH WHEN 12 VOLTS IS APPLIED.

    THIS WILL GIVE YOU A 50/50 ABOUT THE COMPRESSOR BUT THERE IS NO WAY TO TELL IF IT WILL COMPLETELY WORK UNTIL IT IS INSTALLED.

    DON’T FORGET ABOUT REPLACING THE RECEIVER DRIER AS WELL AND YOU WILL HAVE TO HAVE IT PROFESSIONAL RECHARGED WITH OIL AND FREON.

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