Fuel Gauge - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Colesnsty68 · 11-06-2010, 09:13 PM

Ok, so after putting in a new dash and tach, i went to start it,and after having it run for a while, i noticed that the needle was pegged way past full. so after flipping the tank selector alot and looking through the wires and such, im kinda at a loss. i've browsed thru the older posts and couldn't find anything. and i know it worked an hour before, well cuz i was using then. So any input would be appriceated!
Thanks,
Cole

sixshooter798 · 11-07-2010, 12:49 AM

I had the same issue after installing a carburetor. The gauge itself may be bad, or perhaps a round plug on the firewall just to the driver's side of the intake manifold may have come unplugged. That was my problem.
Other than that, maybe there is an issue with the printed circuit? I'm sure someone else will chime in with further advice.

motornut · 11-07-2010, 09:41 AM

that usally is the sender unhooked

vtwinsport · 11-07-2010, 10:36 AM

Quote:

Originally Posted by Colesnsty68

Ok, so after putting in a new dash and tach, i went to start it,and after having it run for a while, i noticed that the needle was pegged way past full. so after flipping the tank selector alot and looking through the wires and such, im kinda at a loss. i've browsed thru the older posts and couldn't find anything. and i know it worked an hour before, well cuz i was using then. So any input would be appriceated!
Thanks,
Cole

One of your sending wires is grounding out somewhere. Check the sending lead from the tank to the gauge. Remove the sending unit ground strap and clean the contact areas and re-attach. Also, you might try taking out the sending unit from the tank, cleaning the contact areas on the tank and sending unit base and re-installing. I had to do that once after checking all other wires.
good luck

Colesnsty68 · 11-07-2010, 07:11 PM

Turned out that i had just loosened the plug in the firewall. simple mistake of mine, but thank you!

bucannon · 11-07-2010, 10:55 PM

lucky, i had to drop my tank and re-attach a ground wire to get my gas gauge to stop lying and saying it was past full hahahaha

sixshooter798 · 11-08-2010, 01:53 AM

Quote:

Originally Posted by Colesnsty68

Turned out that i had just loosened the plug in the firewall. simple mistake of mine, but thank you!

Problem solved is such a great feeling, especially when you don't have to chase wires.

11-06-2010, 09:13 PM	#1
Colesnsty68 Registered User Join Date: Jun 2009 Location: Arvada, Colorado Posts: 210	Fuel Gauge Ok, so after putting in a new dash and tach, i went to start it,and after having it run for a while, i noticed that the needle was pegged way past full. so after flipping the tank selector alot and looking through the wires and such, im kinda at a loss. i've browsed thru the older posts and couldn't find anything. and i know it worked an hour before, well cuz i was using then. So any input would be appriceated! Thanks, Cole __________________ 1970 Chevrolet custom camper 20 2000 F@$d F250 Powerjoke "And i still like bologna on white bread now and then" -Alan Jackson

11-07-2010, 12:49 AM	#2
sixshooter798 Desert Rat Join Date: Jul 2010 Location: Mojave Desert Posts: 169	Re: Fuel Gauge I had the same issue after installing a carburetor. The gauge itself may be bad, or perhaps a round plug on the firewall just to the driver's side of the intake manifold may have come unplugged. That was my problem. Other than that, maybe there is an issue with the printed circuit? I'm sure someone else will chime in with further advice.

11-07-2010, 09:41 AM	#3
motornut 78K & 79C Jimmys Join Date: Nov 2009 Location: Ottawa Ont CANADA Posts: 7,901	Re: Fuel Gauge that usally is the sender unhooked __________________ John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350

11-07-2010, 07:11 PM	#5
Colesnsty68 Registered User Join Date: Jun 2009 Location: Arvada, Colorado Posts: 210	Re: Fuel Gauge Turned out that i had just loosened the plug in the firewall. simple mistake of mine, but thank you! __________________ 1970 Chevrolet custom camper 20 2000 F@$d F250 Powerjoke "And i still like bologna on white bread now and then" -Alan Jackson

11-07-2010, 10:55 PM	#6
bucannon Salty Sailor Join Date: May 2009 Location: Savannah, Ga Posts: 603	Re: Fuel Gauge lucky, i had to drop my tank and re-attach a ground wire to get my gas gauge to stop lying and saying it was past full hahahaha __________________ 86 c-10 Custom Deluxe Savannah, Georgia



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