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Answered 2008-08-01 03:39:18

well you said it. Oil pressure switch or oil pressure sending unit.most cars have both.If it has one wire it is an oil pressure sending unit. if it has a plug with 2 or more wires it is an oil pressure switch and sends a signal to the onboard computer. remove the wire either a nut or usually a plug.some sending units take a special socket but if you can get a wrench on it turn it counter clock wise and unscrew it. when you get the new one it will have a red material on the threads, this is a sealant.thread the new switch snug and put you plug back on.

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