What’s the R&R procedure if it’s faulty?īelow is a picture of my fuel gauge after I removed the instrument cluster for closer inspection.What are the resistor's general specs (ohms, wattage)?.With the sender wire still disconnected, the wire that leads into the trunk (let the wire from the tank dangle), needs to be grounded to a good clean ground. Where is the resistor? Should it be visible on the back of the fuel gauge or somewhere inside? Disconnect the sending unit wire from tank.I certainly don’t want to buy a $150 gauge if the problem is actually a $10 resistor. I don't see a wire-wound or ceramic resistor on the back of my fuel gauge, but I’ve not been able to find any pictures of the back of the gauge with the resistor in place. I have read that “the one quarter indication when full” problem may be caused by an issue with the resistor on the fuel gauge itself: that either the resistor is faulty, or, in some cases, the resistor was not reinstalled with the gauge as it should have been. From this I concluded that the wiring harness was not faulty, and that the gauge was indeed working (although maybe not correctly). 1973 Chevrolet El Camino - Fuel Sending Unit Dont see the part you searched for Search your part number using our part interchange & find interchangeable parts for your. The fuel gauge indicated a little less than empty (as expected). Shop for the best Fuel Sending Unit for your 1973 Chevrolet El Camino, and you can place your order online and pick up for free at your local OReilly Auto Part. I then connected a jumper from ground to the tan wire terminal on the trunk harness (not the brown wire to the tank) for a zero resistance scenario. In this case the fuel gauge in the instrument cluster indicated a little more than full (as expected). Test 2 – Tested the Wiring Harness & Gauge – Unplugging the tan fuel tank sending unit wire from the trunk harness creates an infinite resistance scenario. From this, I concluded that the sending unit was not faulty. I also checked other levels in the tank with known amounts of gas in the tank and the resistance was what I expected. I read 0 ohms empty and (approximately) 90 ohms full. Test 1 – Tested the Sending Unit – I unplugged the tan fuel tank sending unit wire from the harness in the trunk and read the resistance at the wire connected to the tank sending unit. Thanks in advance for any of your thoughts. I’ve performed some tests and read as much as I could from various sources (including this forum), but I haven't found this exact issue and now I need some help. Gas Tank Sending Unit - 3/8 Outlet w/ Return Line - 64-67 Chevelle El Camino GTO Cutlass Skylark Part 881-3464-3R, Retail: (USD) 40.99 Availability: In. One of the issues is that the fuel gauge reads approximately one quarter full when the tank is full. It has a handful of minor issues that I am happily working through. It’s in great shape and I couldn’t be happier. After nearly 20 years since I owned my ’69 Firebird, I finally bought a ’69 Camaro.
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