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Originally Posted by OilLeaks
So just to clarify... I check the wires for voltage one at a time by putting the red multimete probe on one wire & the black probe on a common grounded area? One should read 5v & the other 0v? The wires are green / black.
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Yup, you got!
A good ground is any unpainted aluminium part of the engine. Make sure to press the ground probe firmly to ensure a good connection.
Quote:
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Originally Posted by OilLeaks
Under normal circumstances, if the oil temp sensor is unplugged, does the car default to a high reading or what should happen?
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If the oil temp sensor is unplugged, the indicated temp should be around -40C / -40F.