Gauges Not Working

Unfortunately these cars suffer from faulty sensors and gauges, so it's conceivable that they could be fuckered at both ends.

Sensors:

The fuel level sender is accessible through the rear hatch. You can pull it out, reconnect it to the harness and manually move the float up and down to narrow
down if the sender or the gauge is defective.

I swear oil pressure sensors are a consumable with older Nissans. I'd replace the sensor to see if the gauge works properly.

Same with temp gauge, cheap to replace, not to difficult to remove.

Gauges:

Usually the cause is faulty/cracked solder joints and possibly aged capacitors (more common in the oem stereos) in the circuits. This board member touched up the solder joints and got his working again.

I believe it is the senders. The fuel and temp gauge both had come on for a few minutes the other day. Im assuming that since the worked for a minute it is likely the senders going out. I believe the oil to also be the sender since the gauge is still turning on and moving, it just goes all the way up and stays there. I dont think it is actually a high oil pressure issue.

Oil Pressure was just the sender. From what I found the sender for the temp change is the sensor on top of the head. I Changed that one and still have nothing for the temp. Other ideas?

Test the sensor to see if it was the problem.