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Old 14-01-2012, 06:48   #1
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Yanmar4JH2HTE Oil Pressure Sender Problems

My 1998 Yanmar 4JH2HTE oil pressure gauge reads max as soon as I turn on the key and stays there when the engine is running. I know I have good oil pressure but there is a problem somewhere in the circuit. When I disconnect the wire to the sender the needle goes to 0. When i install the wire to a replacement sender and ground the sender the gauge reads maximum again. I believe it should read 0 with no oil pressure. What would make the gauge move when power is turned on and then read 0 when the sender is disconnected other than either a faulty gauge or sender? How do I properly test or diagnose the sender unit and gauge?
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Old 14-01-2012, 07:29   #2
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Re: Yanmar4JH2HTE oil pressure sender problems

See ➥ http://www.cruisersforum.com/forums/...sting-645.html
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