Post by
Hijacker »
https://forums.nicoclub.com/hijacker-u9394.html
Wed Jun 17, 2009 2:34 am
The stock gauge isn't exactly accurate, but it's better than nothing.
Since your motor is an S13 motor and your chassis is an S13 chassis, the stock sensor is the correct type. However, it's possible that it's dead. A new one from Nissan costs under $20 IIRC. The sensor reports directly to the gauge cluster, so your ECU has nothing to do with it.
Given that you're having other gauge problems, though, you may want to look for corrosion or missing screws on the cluster. The screws that hold the gauges to the cluster also act as grounds. If your cluster looks to be in good order, then you may just have some bad sensors in the fuel tank sender and dash temp sensor.