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P0645 dodge - do i need this relay

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the ac don't work and the compressor makes a bad nosie it don't make it with the fuse out so do I need this relay in the car will it harm the van in any way if it does not have it

Vehicle: 2003 dodge grand caravan sport

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The relay is for the a/c compressor, it should not harm anything if you have it pulled out.

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