My oil pressure gauge is jumping.
 

There isnt anything wrong with the pressure if so i wouldnt have an engine left so im thinking that it must be the gauge or the sensor.

Any suggestions??

You must be new to RX-7 world. Mazda RX-7 oil pressure sending units have always been a POS. You will condsider yourself lucky if one works perfectly for more than two years.

The 1st gen ones were worse than the 3rd gens such that I installed a mechanical oil pressure gauge in my 1st gen.

i sure am, i have owned my RX for about 2 weeks