The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 67-72 Chevy Truck fuel gauge diagnostics 101

**TBONE1964** · 08-23-2014, 02:15 PM

Next, I will show the ohm meter readings for the fuel gauge and the fuel tank sending unit. The sending unit is not from a 67-72 truck but it is a 0 - 90 OHM scale and will be the same as the truck except the float arm is shorter.

As you can see, I have hooked up the ohm meter to the fuel gauge in several different ways so you can see the meter reading differences. I always test with the resistor installed and tight on the gauge as it would be in a normal situation.

I will repeat this on the fuel sending unit so you can see the reading changes depending on the float level.

08-23-2014, 02:15 PM	#2
TBONE1964 Cluster King Join Date: Nov 2012 Location: Junction City, OR Posts: 5,263	Re: 67-72 Chevy Truck fuel gauge diagnostics 101 Next, I will show the ohm meter readings for the fuel gauge and the fuel tank sending unit. The sending unit is not from a 67-72 truck but it is a 0 - 90 OHM scale and will be the same as the truck except the float arm is shorter. As you can see, I have hooked up the ohm meter to the fuel gauge in several different ways so you can see the meter reading differences. I always test with the resistor installed and tight on the gauge as it would be in a normal situation. I will repeat this on the fuel sending unit so you can see the reading changes depending on the float level. Attached Images __________________ Contact me on all of your gauge cluster needs. I specialize in restoration, repair and parts sales for 67-72 Chevy and GMC trucks. email me at tbonegarris@yahoo.com I am also a dealer for Counterpart for gauge cluster parts only. Also see my facebook page, CG&C