gas and temp gauge

[ACK]

Originally Posted by 65truckowner

I did some testing today. I pulled the sender out of the tank and used my meter to check ohms. At full it was 30 then went down as I moved the float down. Then I checked at the fuse and had 12 volts. I turned my meter to continuity and touched the two blades on the back of the gauge I did not have continuity, is this right? Also when I had the sender out of the tank I hooked up the wire to the stud and moved the float up and down and the gauge did not move from the first mark on the gauge.

This is getting a tad beyond my knowledge. If the gas gauge is 90 OHM, which is very possible for a '65, the 30 OHM sending unit will only tell the gauge it's no more than 1/3 full.

Here's some multimeter data from my C10 30 OHM gas gauge that may or may not help:

OHM set to 2000, readings taken from the brass spades and not the nuts due to wide fluctuation in readings:
Resistance between the 2 spades is 40
Resistance between left spade and bottom bar is between 24 - 35
Resistance between right spade and bottom bar is between 5 - 17
Resistance between ground (gauge casing) and bottom bar is between 56 - 66

Resistance tone was given between the bar on the bottom and the right spade, also the left spade and simultaneous contact with both the bar on the bottom and gauge casing; no tone between the 2 spades.

Keep us posted on your travels. BTW, is it me or does the back of the gauge look kinda like a pissed off muppet.