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AC compressor not coming on - Ram 3500 Dodge Cars & Trucks

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You may have a fuse burnt out,there is also a diode on the compressor that could be no good.the freon level in the system can also be low and the system will have to be checked for leaks and then repaired if needed and refilled with freon.the a/c control may also not be working,this is not common.

Posted on Apr 05, 2011

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If the ac compressor is frozen meaing it will not turn..when the electric clutch on the front engages.. it would cause the pulley to stop turning.. and the belt would have a hard time staying on a non rotating part.

Or if the belt tension-er is bad..or the belt is worn.. when the additional load of the compressor kicks in.. it jumps off.

Finally it could be a combination of all three..


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1 Answer

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sounds like a ac compressor relay is not working. check the relay panel usually there is another relay of the same type to switch out and see if that works.

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