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Oil pump sensor check Mercury Oil Injection

Hi,

We have a measurement on the oil pump sensor that says.. measure the blue white wire to ground and you should have 5vdc +- 1vdc. Also every 2 rotations of the motor, this voltage should drop to less than 1vdc.

in my instance, I have 4.75 vdc constant. There is NO DROP every 2 revolutions. The white wire to sensor has 11.7vdc

Is this indicative of a oil pump sensor problem?

thanks in advance
 
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