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#1 |
Registered User
![]() Join Date: Oct 2009
Location: Phoenix, AZ
Posts: 475
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Fuel Gauge Help
I took out my instrument cluster this afternoon to install and connect up my clock. After I put it back, when I turned on the ignition the fuel gauge needle moved round to the 4 o'clock position and remains there. It has always worked correctly until now. Everything else in the cluster works (including the clock).
Any ideas? Thanks, Richard
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1971 C10 Longbed, 350/TH350 |
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#2 |
Registered User
Join Date: Dec 2007
Location: Riverside, Ca
Posts: 407
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Re: Fuel Gauge Help
Your gauge is grounding out somewhere. that will cause it to always read full like that. Considering you had the cluster out i would check there first and if that doesn't turn up trace it all the way to the sending unit. Its shorting somewhere.
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#3 |
Msgt USAF Ret
![]() ![]() Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,714
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Re: Fuel Gauge Help
You have lost the connection between the sending unit and the fuel gauge. It is a tan wire and runs from the center terminal of the sender to the fuse panel and from there to the cluster plug at the no.4 pin. If you ground the fuel tank sender wire the gauge should go to empty. The same should happen if you ground the fuel terminal on the fuse panel.
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VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
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#4 | |
Registered User
Join Date: Dec 2007
Location: Riverside, Ca
Posts: 407
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Re: Fuel Gauge Help
Quote:
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#5 |
Registered User
Join Date: Jan 2011
Location: Redmond, OR
Posts: 758
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Re: Fuel Gauge Help
No offense to Devilpup, but go with Vettevet's advice. He has helped me and others through similar problems many, many times.
Open circuit causes the gauge to go to 3 o'clock, grounded makes it go to 9 o'clock.
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68 Chev C20- son has it now 83 K20 - bought from son 70 C20 - in progress |
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#6 |
Registered User
Join Date: Dec 2007
Location: Riverside, Ca
Posts: 407
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Re: Fuel Gauge Help
No offense takin. Everyone can be wrong or backwards once in a while. Just trying to help out. Let us kno what u find out and good luck.
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#7 |
Registered User
![]() Join Date: Oct 2009
Location: Phoenix, AZ
Posts: 475
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Re: Fuel Gauge Help
You guys are awesome - thanks. Turns out that when I inserted the cluster plug, the little flap on the printed circuit for pin #4 got pushed aside enough so that there was no contact, even though it looked to be OK. When I put it together properly, problem solved.
Thanks again, Richard
__________________
1971 C10 Longbed, 350/TH350 |
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#8 | |
Msgt USAF Ret
![]() ![]() Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,714
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Re: Fuel Gauge Help
Quote:
The main thing is that you were trying to help and that's never a bad thing. VV
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VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
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#9 |
Restoration Virgin!
Join Date: Jan 2008
Location: Huntersville, NC
Posts: 8,298
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Re: Fuel Gauge Help
looks like I'll be using this one shortly
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Geoff with a G 1968 Chevy C10 SWB The Mistress 1972 Custom Deluxe C20 Suburban A Suburban Named Isabella 1966 Ford Mustang Mama's High School Graduation Present |
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