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> I just recently purchased a beautiful 73
> 240z. It drives wonderfully but the oil
> pressure gauge has me confused. The car
> idles at 500rpm and in stop and go traffic
> when I sit for awhile the oil pressure gauge
> drops to 0 as soon as I move and the rpm get
> to 1000+ it returns to normal levels. Is
> this a gauge thing or should I be alarmed?

Tod,

Relax.
You've just discovered the notoriously bad oil pressure sending unit that afflicts early Z's.
It does exactly as you describe.

If it really bugs you--you can get a new Nissan oil pressure sending unit that will give you the correct reading(but the thing is about $56!)

Don't get the ten dollar aftermarket jobs from your local parts superstore--it will be worse than the unit you have now!

I went that route--and ended spending the $56 anyway buying the real Nissan job.

John
 
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