Gas Gauge Tests Okay

[55 Fargo]

Hi all, just came in from the Chrysler Den of inequity,aka the garage.

I ran 2 leads from my gas gauge in car. I grounded each wire one at a time, It would make the gauge rise to full, the other lowers the gauge to empty. They both appeared to make the gauge do it's job, so bonus, did something right for a change.

So hopefully once I get my new sender it will continue to work. The gauge moved very stickily in either direction the first few times, but was loosening up.

This gauge may not have moved internally for who knows maybe 40 years.

I will run 2 new14 gauge wires from the gauge to the sender, I will also ground the sender and tank with a seperate wire and hopefully all will be well again............Fred

[Plymouthy Adams]

The "sticky" action is normal and will most always be like that on initial energize as the circuit must heat up..the stop action of the needle is when the 5 volt internal regulator hits the 5 volt mark and opens the contact..the slow dampened movement of the meter allow for the guage to stay in place...then the bi-metal cools and the contacts close allowing the needle again to move till correct reading is optained..this operation prevent flux of needle when fuel slosshes around in the tank. Once the needle stablizes..you will not see any more fluxiation.

[Normspeed]

Fred, good luck, but I still say the most accurate fuel gauge in an old Mopar is likely to be: lick index finger, hold out window of moving car, when motor stops you just ran out of gas.