Fuel Sending Units and A-Body Fuel Tank Map

Mike69cuda said

I have an aftermarket sender and I have got it working pretty good with a Meter Match. I think it might be +/- about a gallon accurate. I have been refilling the gas a various readings on the gauge to check accuracy.

Being the lazy guy that I am, I just used the charts I found here on the forum and programmed the meter match with resistors. It was very easy, no crawling under the car and getting a face full of gas like I usually do when I mess with a fuel tank. I had my dash out, so I did it all on the bench.

I also replaced the ivr, which I understand you have to do to use a Meter Match. I made my own ivr, being a cheapskate. Mine is a rally dash, so the ivr was in the fuel gauge, so I had to have the dash out to do it.

I will post my procedure and the resistor values sometime soon, but can talk you through it if you want to do it before I get to it.

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Hi and thanks for your response.
You seem to be very skilled with electric devices, which I am not much so it might be simple for you but I really don't want to go that far to make the fuel indicator work, there must be a simple way at least to read accurately the full tank and the low fuel...
I have a few old family cars from 70's that my dad bought new and all of them have the slant fuel tank bottom and none of the readers ever told the correct % of fuel left in the tank, the 1st half takes longer to spend and when the meter showed half tank, it actually had 1/4 but we got used to that... what cannot happen is having a wrong reading when the fuel is low... risking run out of gas...
I paid good money for the cheap aftermarket sending unit which should be made as stock but have no idea how to test it.
Once I must have the original sending unit I guess I'll try to compare both and perhaps use the resistor from the old rusted out unit in the new one, if it works...