HeciDeci
Junior Member
- Joined
- Sep 8, 2023
- Posts
- 1
- Reaction score
- 0
- Location
- Amherst, VA
- First Name
- Tom
- Truck Year
- 1984
- Truck Model
- K10
- Engine Size
- 350ci
Hello All,
I'm having an issue with my fuel gauge only being 50% accurate, the truck has a new 20 gallon tank, new sending unit, verified the tank ground, and the truck has about 10 gallons in it. The fuel gauge only shows a 1/4 tank, it should show 1/2. If I ground the sensing wire, the gauge goes to empty, as it should. If I disconnect the sensing wire, to my knowledge, the gauge should peg way past full. However, it only goes to full and stops. Checking resistance at the sending unit peg, to ground, I have 61 ohms, so the sending unit is working correctly. However, checking the sensing wire to ground at the bulkhead connector, I only show 25 ohms. If disconnect the sensing wire, and check it to ground, I get 45 ohms on the sensing wire. It should be an open circuit, correct? What is the deal with this thing? I'm at a loss with it. Any help is appreciated.
Thanks,
Tom.
I'm having an issue with my fuel gauge only being 50% accurate, the truck has a new 20 gallon tank, new sending unit, verified the tank ground, and the truck has about 10 gallons in it. The fuel gauge only shows a 1/4 tank, it should show 1/2. If I ground the sensing wire, the gauge goes to empty, as it should. If I disconnect the sensing wire, to my knowledge, the gauge should peg way past full. However, it only goes to full and stops. Checking resistance at the sending unit peg, to ground, I have 61 ohms, so the sending unit is working correctly. However, checking the sensing wire to ground at the bulkhead connector, I only show 25 ohms. If disconnect the sensing wire, and check it to ground, I get 45 ohms on the sensing wire. It should be an open circuit, correct? What is the deal with this thing? I'm at a loss with it. Any help is appreciated.
Thanks,
Tom.
