Fuel sender problems

[71 swinger]

I have a Triangle Engineering fuel cell, the sending unit that was purchased with the cell didnt work so I purchased one through summit and it still does not work.   

I have a 70-10 sending unit from summit
Autometer Phantom gauge  pt # ATM 5815   73-10

When the car is empty it reads empty
when the car read full it is full
between empty and full it reads empty

I dont know if I should try a new gauge or just pull everything out and go with  0-90 chevy set up.

Anyone have any sugestions?

[NYrr496]

Take the sender out of the cell, put a meter across the sending wire and ground and move the float through it's arc.  Make sure the meter is reading Ohms.

[71 swinger]

I have already tested the sender and it does not ohm out the way it should, it is just like the first sender 30 empty 10 full.
It stays at 30 right until it reaches full.

I have read that the Mopar style fuel cell sending units have had alot of problems im on my second one that does not test good, thats why I ask if i should put a chevy gauge and sender and call it done.

Dan

[cu440da]

 

Interesting. My autometer with replacement stock sender is acting similarly.