Gas Gauge Help? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Piper71c10 · 08-29-2004, 03:02 PM

My gauge reads over full all the time. I've checked the sending unit, and the wire to the unit, but I don't know what to do next. Any help?

Piper

60-66 Nut · 08-30-2004, 11:04 AM

Piper,try unhooking the wire at the sender,turn the key on,and watch the gauge.If the gauge doesn't move,then touch the wire momentarily to a good ground.This won't be the same resistance as the sender,but it should tell you if the gauge is working at all or not.If the gauge doesn't move either way,you probably have either a bad gauge or the wire could be broken or shorted to the gauge.If it does move,then more than likely it's the sender.Hope that helps.Lynn

Piper71c10 · 09-01-2004, 08:05 PM

Thanks for that tip! Should've thought of it myself, but that worked, and I discovered that my sending unit was bad. Threw another one at it, and BAM! The tank reads correctly. Whoduve thunk?

Piper

60-66 Nut · 09-02-2004, 09:12 AM

Anytime.Glad that worked for 'ya.

fellerb · 02-27-2005, 03:47 PM

Who did you buy the sender from?

Fireman Bill

Piper71c10 · 02-27-2005, 09:42 PM

I didn't buy one, I had one lying around from another truck....

Piper

08-29-2004, 03:02 PM	#1
Piper71c10 Unending Project Join Date: Aug 2003 Location: Sequim, WA Posts: 337	Gas Gauge Help? My gauge reads over full all the time. I've checked the sending unit, and the wire to the unit, but I don't know what to do next. Any help? Piper

08-30-2004, 11:04 AM	#2
60-66 Nut Professional Beer Tester Join Date: Aug 2004 Location: Louisiana Posts: 453	Piper,try unhooking the wire at the sender,turn the key on,and watch the gauge.If the gauge doesn't move,then touch the wire momentarily to a good ground.This won't be the same resistance as the sender,but it should tell you if the gauge is working at all or not.If the gauge doesn't move either way,you probably have either a bad gauge or the wire could be broken or shorted to the gauge.If it does move,then more than likely it's the sender.Hope that helps.Lynn __________________ 60 Ford F100 Custom Cab 61 Apache Short Fleetside 64 C10 Short Stepside 65 C80 409 V8 5spd(X-Firetruck) 83 GMC 350 Olds Diesel 85 GMC Short Bed 86 GMC Short Bed 90 GMC R3500 Crew Cab 92 GMC 1500

09-02-2004, 09:12 AM	#4
60-66 Nut Professional Beer Tester Join Date: Aug 2004 Location: Louisiana Posts: 453	Anytime.Glad that worked for 'ya. __________________ 60 Ford F100 Custom Cab 61 Apache Short Fleetside 64 C10 Short Stepside 65 C80 409 V8 5spd(X-Firetruck) 83 GMC 350 Olds Diesel 85 GMC Short Bed 86 GMC Short Bed 90 GMC R3500 Crew Cab 92 GMC 1500

09-01-2004, 08:05 PM	#3
Piper71c10 Unending Project Join Date: Aug 2003 Location: Sequim, WA Posts: 337	Thanks for that tip! Should've thought of it myself, but that worked, and I discovered that my sending unit was bad. Threw another one at it, and BAM! The tank reads correctly. Whoduve thunk? Piper

02-27-2005, 03:47 PM	#5
fellerb Registered User Join Date: Feb 2005 Posts: 2	Who did you buy the sender from? Fireman Bill

02-27-2005, 09:42 PM	#6
Piper71c10 Unending Project Join Date: Aug 2003 Location: Sequim, WA Posts: 337	I didn't buy one, I had one lying around from another truck.... Piper



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