Fuel Gauge at Full

[Dead Parrot]

If you have a 30 ohm sender, the reading on your ohm meter of 18 ohms seems about perfect for a half tank of gas. Pretty sure senders are linear in response. 0 = empty, 30 or 90 depending = full. Open circuit on a 73-87 gauge will cause the gauge to go past full to about a 3 o'clock reading.

Don't know when they switched from 30 to 90 ohm senders and gauges. The 73-87 family are 90. They are the ones I am most familiar with.

[The Rocknrod]

Originally Posted by Dead Parrot

If you have a 30 ohm sender, the reading on your ohm meter of 18 ohms seems about perfect for a half tank of gas. Pretty sure senders are linear in response. 0 = empty, 30 or 90 depending = full. Open circuit on a 73-87 gauge will cause the gauge to go past full to about a 3 o'clock reading.

Don't know when they switched from 30 to 90 ohm senders and gauges. The 73-87 family are 90. They are the ones I am most familiar with.

Thats what I thought also but it still doesnt work. Also see post #11 in Red. I use an ohmmeter and read between the two posts on the back of the gauge (nothing else hooked to them) I got 37.4 ohms.