Yes, I have a lot to learn in this area. Here is my issue:
78 Cherokee with a 1990 360. Aftermarket/separate temp, volt, and oil pressure gauge. Fuel gauge on the dash is still operable-ish. Poly tank installed at some point.
When I fill her up to the brim with gas, upon the first crank gauge reads anywhere from 1/2-3/4 full. Starts to move down slowly from there with each additional shut down and crank. It will usually get to "E" and I expect I still have half a tank or so.
I have checked the ground at the frame and that seems to be good.
So my question is, what process should I undertake in figuring out what might be the issue? I know on my CJ, the fuel gauge power is transferred over from the power to the temp gauge. But in the Cherokee's case, the original temp gauge is not hooked up. But with the gauge still working, I assume it is still receiving power. Just would like to have a working gauge if possible, instead of playing the guessing game on actual fuel left.
Thanks.