Question about 1991 Nissan 300ZX

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Fluctuating Oil Pressure and Engine Dies

My problem is not a constant, one day the car runs like a dream and the next, it doesn't. While driving or idling, the Oil Pressure well go from 30 psi to around and above 90 psi. Then it will stay at 90 and then suddenly drop to below 30.

Also the car will just die. It can be while I'm driving or just letting it idle. It will act as if it has run out of fuel, but I'll have a full tank. If I'm driving, sometimes I can feather the gas pedal and bring it back, but other times I just have to pull over and give it gas and hope that it works.

I've replaced the fuel pump, fuel injectors and the fuel filter. I just don't know what to do with it anymore.

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  • Nissan Master
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Engine oil breathers blocked remove and flush out.hope this helps please let us know.adrian

Posted on Feb 18, 2009

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