TwinTurbo.NET: Nissan 300ZX forum - It is most likely your sending unit
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Subject It is most likely your sending unit
     
Posted by bliZZard (CNY) on May 13, 2010 at 8:03 AM
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In Reply To Low Oil Pressure Help! posted by RayN on May 13, 2010 at 07:47 AM
     
Message The same thing happened with me when I first bought my Z. I thought I was in serious trouble, but it turns out the inlet to the oil pressure sending unit is very small and can become clogged. It would drop to zero for a while, then come back. If everything has been fine up till now, take the sending unit off and drill the inlet hole slightly bigger.

If you had zero oil pressure, the motor would already be in bad shape and you would be hearing a lot more racket.

     
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