The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - where to I find 90 ohm resistor for the fuel gauge?

66mustangguy · 02-08-2015, 01:01 AM

sorry here is more info.

71 gmc suburban - just replaced the sending unit and tested it out for 0 - 90 ohms and it reads correctly. gauge will read full when wire is disconnected, but will read empty when grounded so unloaded the gauge seems to work. when its all connected, full tank of gas will only show 1/4 tank on the gauge.

so I am at a loss. I have read that the resistor is the likely culprit. any help is greatly appreciated.

02-08-2015, 01:01 AM	#3
66mustangguy Registered User Join Date: Jan 2014 Location: hillsboro Posts: 14	Re: where to I find 90 ohm resistor for the fuel gauge? sorry here is more info. 71 gmc suburban - just replaced the sending unit and tested it out for 0 - 90 ohms and it reads correctly. gauge will read full when wire is disconnected, but will read empty when grounded so unloaded the gauge seems to work. when its all connected, full tank of gas will only show 1/4 tank on the gauge. so I am at a loss. I have read that the resistor is the likely culprit. any help is greatly appreciated.