Gas Gauge Reading E When Full

[Dmac0312]

Hey guys I'm having some trouble with my fuel system, i took out the sending unit in order to restore my tank a bit and i re installed it twice and my gas gauge is still reading low when i have plenty of gas in the tank, i took it out a second time to see if the float was stuck but I'm not quite sure if it was or not, how can i tell if the float is stuck and is there a certain way to put the sending unit back in the tank to assure the float won't be stuck?

[darkenfire]

I know they switched polarity in the gauges in 1991.  I have an 89 tank and sender and a 96 gauge cluster, so mine reads full when empty and vice versa.  You did put the same sender back in,right?  Maybe you somehow hooked the wires up backwards when reinstalling it?  If it was that easy, I'd go switch mine so it was right ...

[GirsMJ86]

My '91 read E when full because there was an older sending unit installed and the wires were not swapped correctly. Swap your wires and get back with us, also make sure the ground is clean.

[Dmac0312]

yes it is the same sending unit that i took out, i will switch the wires and see what happens, hopefully thats the easy fix :banana:

[onlyinajeep726]

I've been thinking that perhaps an easier way to correct the Renix vs. HO backwards gauge issue is to make an overlay to stick on the face of the gas gauge that has the "E" and "F" swapped.  Something to get used to, but it could work.  However, the low fuel light would be a different issue.