mjr46

no problem


I don't think that'll solve the issue I mean fresh wiring is nice but you need a sender with the proper calibrated resistance for your new gauge to operate correctly..IIRC in the instructions it said you can purchase them if needed???

mjr46

for 84-85 = same but for 81-84 looks like there is a split in production and resistance values could be the difference since gauge looks and packages are diferent in earlier years

http://www.latemodelrestoration.com/...0%201&comp=LRS

http://www.latemodelrestoration.com/...0%201&comp=LRS

Project 5.GO!

Heeeeeyyy! It sounds like your guage is doing the same as mine. Mine reads slammed full (past the top of the guage) all the time, until I get really low, then in the last gallon or two, it will go down through the entire guage within 10 miles. Oh, and I learned that when the guage reads empty, it's actually empty...

Am I to assume that I can just pull the tank and there, conveniently located in a very easy to reach area will be the sending unit, which after a screw and plug will be quickly replaced without any complicated calibration, and we all live happily ever after? In other words, can I do this without screwing something up in the process?

projectresto83

Well years back my brother and I swapped to an efi tank to run a efi setup in my 83 but I decided to stay carbed. The EFI unit reads the opposite direction of what it is supposed to and the ohms readings are completly different too. So when I have pretty much anything over 2 gallons it reads empty then when it ets close it starts dropping quickly. I'll go around corners and it will move to the full mark and then slowly go back to empty or where ever it want to read. The strip the sending unit reads is all worn down and old.

The sending unit for your car is located in the center of the tank on the top. It isn't always easy to get the lock ring loose so be sure to soak it in PB blaster and take your time tapping it off. Get a haynes manual if you don't have one just in case lol. It is pretty easy to replace. I think I am gonna have to get the gauge that is in whatever car I get the tank/ sending unit from just to make sure that it all works together.

mjr46

^^^^^^^^^^^if you plan on installing a 84-85 style sending unit in your efi tank, you'll need to remove the baffle, when I finally decided to get rid of my 85 cfi/efi tank to use a 85 carb sending unit I ditched the tank due to rust and used a 85 carb tank as it has no baffle set up in it

projectresto83

Yup, I heard that awhile back. Thats why I am just gonna go ahead and get the tank,sending unit, and gauge if I can't find an 83 body. Thanks for the advice though!