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Something NEW for the Bolters!

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HEI for your 216/235/261 Stock Distributor!

Kits are easy to install and do no harm to your vintage distributor.

The entire kit instructions are available at:


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#784552 - Wed Sep 28 2011 06:57 PM Fuel Gauge Chevy C-10 / '66 Truck
WR Offline
New Guy
Registered: Tue Sep 27 2011 11:35 PM
Posts: 13
Loc: Florida,USA
Hi Friends, I recently bought a 1966 Chevy C-10 and the fuel gauge was disconnected. After connecting the wiring to the back of the gauge, the wire to the fuse block and cleaning the ground at the sender unit and turning the key to the on position, the needle went to empty. I checked previous posts regarding to the fuel gauge and sender unit and performed the differents trouble shooting with the jumper cable to ground the sender unit and fuel gauge but the gauge needle never moved again. The gauge has good ground, 12 volts at the cable that connects to it and 12 volts at the fuse in the fuse block. As per previous post the ohms at the sender unit should be 0-90 and mine is reading 241. Based on the ohms reading the sender unit is not working properly. Let me know if there is any other test that I should perform. PLease advise.

Thanks
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#784707 - Thu Sep 29 2011 12:00 PM Re: Fuel Gauge Chevy C-10 / '66 Truck [Re: WR]
jon1963 Offline
Shop Shark
Registered: Thu Oct 29 2009 03:51 PM
Posts: 596
Loc: fayetteville, nc
You might try posting this in the electric bay


Edited by jon1963 (Thu Sep 29 2011 04:07 PM)
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1963 c-10 shortbed stepside 427 BBC T16 HD 3 speed
1963 c-10 shortbed fleetside 348 "w" 1st gen big block & powerglide
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#784870 - Thu Sep 29 2011 09:33 PM Re: Fuel Gauge Chevy C-10 / '66 Truck [Re: WR]
WR Offline
New Guy
Registered: Tue Sep 27 2011 11:35 PM
Posts: 13
Loc: Florida,USA
Ok, Thanks
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#785448 - Sun Oct 02 2011 07:56 AM Re: Fuel Gauge Chevy C-10 / '66 Truck [Re: WR]
4-5-6 Chevy Trucks Offline
Shop Shark
Registered: Wed Nov 17 2004 12:00 PM
Posts: 2720
Loc: Kansas City, KS
The factory sending units and fuel gauges were 0-30 ohms, so you may have a non-factory sending unit of a different ohm range, than the factory fuel gauge. This problem is not uncommon. Do the ohm range test, through the float range on the sender, with your ohm meter. It should not exceed 30 ohms +/- a few ohms.
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4-5-6 Chevy Trucks
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#785533 - Sun Oct 02 2011 03:08 PM Re: Fuel Gauge Chevy C-10 / '66 Truck [Re: WR]
WR Offline
New Guy
Registered: Tue Sep 27 2011 11:35 PM
Posts: 13
Loc: Florida,USA
I removed the sender unit and it says 30 ohms at the level float. I tested again and now is reading correct from 0 to 30 ohms. I installed the sender unit again, tested it and it is reading between 6 and 7 ohm. I connected all the fuel system and gage its still going to Empty. Any recommendations?

Thanks
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#785988 - Tue Oct 04 2011 06:58 AM Re: Fuel Gauge Chevy C-10 / '66 Truck [Re: WR]
DThela Offline
Shop Shark
Registered: Sun Sep 10 2006 12:00 PM
Posts: 566
Loc: Rhode Island
ground check!
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1963 GMC Suburban
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#785996 - Tue Oct 04 2011 08:11 AM Re: Fuel Gauge Chevy C-10 / '66 Truck [Re: DThela]
johntsmith Offline
Shop Shark
Registered: Fri Sep 24 2010 03:39 PM
Posts: 782
Loc: Tampa Bay FL
Make sure the guage is wired correctly.
_________________________
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#786153 - Tue Oct 04 2011 07:03 PM Re: Fuel Gauge Chevy C-10 / '66 Truck [Re: johntsmith]
wrenchin Offline
New Guy
Registered: Mon Oct 03 2011 08:14 PM
Posts: 20
Loc: WA state
Hate to ask the obvious but are you sure there are at least a few gallons in the tank? my 65 would read empty well before the bottom of the tank
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#786209 - Tue Oct 04 2011 09:36 PM Re: Fuel Gauge Chevy C-10 / '66 Truck [Re: wrenchin]
WR Offline
New Guy
Registered: Tue Sep 27 2011 11:35 PM
Posts: 13
Loc: Florida,USA
I checked the ground and the gauge still reads empty. I added more gas to the tank and the ohms at the sender unit increased. I removed the gauge, connected to 12V and ground, and the needle never moved. Does the gas fuse at the fuse block has power with the ignition key off? I think the gauge it's not working.
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#787395 - Sun Oct 09 2011 04:43 PM Re: Fuel Gauge Chevy C-10 / '66 Truck [Re: WR]
oldblu65 Offline
Shop Shark
Registered: Mon Oct 03 2005 12:00 PM
Posts: 220
Loc: Just east of Mowbray
If your gauge reads full all the time( with the key on ) , that generally means you have a break in the wiring between the gauge and sending unit . If it reads empty all the time , generally you're looking at a short somewhere in the wiring between the two units . At least , that's what I've been told by people smarter than myself !
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#787418 - Sun Oct 09 2011 06:41 PM Re: Fuel Gauge Chevy C-10 / '66 Truck [Re: oldblu65]
DThela Offline
Shop Shark
Registered: Sun Sep 10 2006 12:00 PM
Posts: 566
Loc: Rhode Island
if you put 12v across the guage and it didn't move it's probably shot. measure the resistance of the guage out of the circuit, if it's zero it's shot.
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1963 GMC Suburban
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#789318 - Sun Oct 16 2011 02:41 PM Re: Fuel Gauge Chevy C-10 / '66 Truck [Re: oldblu65]
WR Offline
New Guy
Registered: Tue Sep 27 2011 11:35 PM
Posts: 13
Loc: Florida,USA
Fuel gauge is working now. I found that the ground at the instrument cluster was bad.

Thanks all.
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#799393 - Sun Nov 20 2011 07:06 AM Re: Fuel Gauge Chevy C-10 / '66 Truck [Re: oldblu65]
Tramp Offline
Shop Shark
Registered: Mon Feb 12 2007 12:00 PM
Posts: 644
Loc: central kansas
I had the same problem with my 64' and what I found that fixed it was replacing the wire between the units. Somewhere there was a break in the wire and as soon as it was done, I had smoke in the wire again and no more problems with the gauge. Hope you get yours taken care of and find what it takes to get it going again.
Tramp
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