So just checked the mailbox and the sending unit was in there. up

I went out and measured the resistance with the float low (equivalent to empty tank) and it measured around 78ohms.

When I raised the float to simulate a full tank the resistance went down to about 16 ohms at about 4/5 full and then creep back up to 78 ohms at full. I did this a bunch of times and it was fairly consistent. Then I tried it by raising the float very slowly and I could get it to read 13 ohms at full. I tried doing this repeatedly (raising it slowly) but could not always get a 13 ohms reading every time (sometimes ~20 ohms, sometimes ~30 ohms and every now and again 78 ohms).

Does this sound right or do you guys think this OEM sending unit has an issue?

70 Cuda 340 4 speed - now stroked to 416ci (SOLD)
2017 Mustang Shelby GT350