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Oil pressure drops to zero at idle an goes back up with engine speed?
Wiki User
∙ 15y ago
1. low oil
2. probably have a electronic oil pressure sensor, senor can fail. mechanical gauges have a oil line running to the back of the gauge and don't fail unless the oil line is cut, and that would leak lots of oil fast, running your engine out of oil.
3. short in wireing
Wiki User
∙ 15y ago
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