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#1 |
Thats just prime!
Join Date: Mar 2002
Location: TEXAS
Posts: 720
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What is the deal with my fuel gauge? I turn the key to the on position and the pointer goes half a tank past full. Then I turned the truck on and the pointer went back to empty where it was (and always is). Whats with that?
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*69 GMC short bed stepside with a wimpy six that can barely pull itself. *99 Chevrolet Camaro Z-28 1 Bad 5.7ltr LS1 |
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#2 |
L.E.D. Tail lights, Baby!
Join Date: Jan 2002
Location: Corona, Ca
Posts: 290
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Maybe the radiation from your glowing pumpkin whacked it out.
You may have a bad sending unit. I had a nissan that was fin until you got to half a tank, then it just fell to E. That's what the problem with my old nissan.
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Prov 3:5-8 "Hook 'em" L.E.D. Taillights for sale NOW!!! If interested, visit: www.earlyclassic.com or our website: www.jmcled.com All 67-72 GM Taillights are on sale untill 5 p.m. on Dec 15th, with Guaranteed Christmas delivery! joel.mcwaters@jmcled.com |
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#3 |
Registered User
Join Date: Jul 2002
Location: St. James, MO
Posts: 1,239
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Check the wiring to the sending unit, and check the ground. A friend of mine gives the foloowing four step process for trouble shooting electrical problems:
1) Check the ground. 2) Check the ground. 3) Check all the other wires for unwanted ground. 4) Check the ground.
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'69 Longstep K-10: 327/SM465/T-221/Closed Knuckle Dana44/12-bolt. |
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#4 |
Back from the Dead
Join Date: Dec 2001
Location: Salem, Oregon
Posts: 522
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I found tis problem in the fuel cell in my 72' when I bought the truck. It turned out to be a bad sending unit. So after I replaced the unit, the gauge was stil jumpy when the fuel would slosh around in the tank. The easy fix to a jumpy needle was a good ground. Hope this helps.
Kenny
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The only Carb that matters to me is the one under my hood! Salem, Oregon |
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#5 |
Thats just prime!
Join Date: Mar 2002
Location: TEXAS
Posts: 720
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Hmm...2/3 say the problem lies with the ground...Nah I'm thinkin the radiation from my glowing pumpkin is makin it jumpy!
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*69 GMC short bed stepside with a wimpy six that can barely pull itself. *99 Chevrolet Camaro Z-28 1 Bad 5.7ltr LS1 |
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#6 |
Now the others dig........
![]() Join Date: May 2002
Location: San Antonio, TX
Posts: 1,520
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where would the ground be for the fuel gauge?????
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68 Chevy C10 Stepside Black Primer 78 GMC Longbed White 09 Chevy Silverado Shortbed Granite Blue LOOKING FOR A 67 4 DOOR IMPALA!!! ![]() MEMBER OF THE DRUM BRAKE CLUB Bachelor of Music in Jazz Studies Texas State University-San Marcos, TX Certified Music Educator I hope Mom is up there watching and being my Guardian Angel "I've got a fever.....and the only prescription.....IS MORE COW BELL" -The Legendary: Bruce Dickenson "F#$@ 'em up!!!!!!" -The Legendary: Rogelio Escobar ![]() TRUCKY LINKS http://67-72chevytrucks.com/vboard/s...d.php?t=457750 http://67-72chevytrucks.com/vboard/s...d.php?t=461184 http://67-72chevytrucks.com/vboard/s...d.php?t=472848 http://67-72chevytrucks.com/vboard/s...d.php?t=417541 http://67-72chevytrucks.com/vboard/s...d.php?t=477788 |
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#7 |
Registered User
Join Date: Jun 2002
Location: SPRINGFIELD MO.
Posts: 126
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what if your fuel gage never moves what is that?
andy
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the sun even shines on a dogs a$$ some days!!! |
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#8 |
Strongman Garage
![]() Join Date: Apr 2000
Location: Salinas, CA
Posts: 10,241
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a very efficent engine
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Kalle 68 GMC Suburban 1500 4x4 SOLD 69 Pontiac Lemans 99 Silverado 4.8 5 speed ECSB [ Facebook Instagram Subscribe on YOUTUBE |
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#9 |
I Love This Stuff!
Join Date: May 2002
Location: Winnipeg, Manitoba, Canada
Posts: 739
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I'm not sure if anyone has mentioned this yet but what about the "ground" ???
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My Rides 1967 C10 In Pieces for now ![]() 1985 Ford B700 SourPuss Bus - BIG BLUE 2003 Silverado CITY WORKER YELLOW!! |
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#10 |
Registered User
Join Date: Jun 2002
Location: SPRINGFIELD MO.
Posts: 126
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kick a$$ so i never need to fill my truck up with gas-- this board rules!!!
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the sun even shines on a dogs a$$ some days!!! |
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#11 | |
Now the others dig........
![]() Join Date: May 2002
Location: San Antonio, TX
Posts: 1,520
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![]() Quote:
![]() JHickson6, Maybe this will get there attention.... WHERE IS THE GROUND FOR THE FUEL GAUGE?!??!?!??!
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68 Chevy C10 Stepside Black Primer 78 GMC Longbed White 09 Chevy Silverado Shortbed Granite Blue LOOKING FOR A 67 4 DOOR IMPALA!!! ![]() MEMBER OF THE DRUM BRAKE CLUB Bachelor of Music in Jazz Studies Texas State University-San Marcos, TX Certified Music Educator I hope Mom is up there watching and being my Guardian Angel "I've got a fever.....and the only prescription.....IS MORE COW BELL" -The Legendary: Bruce Dickenson "F#$@ 'em up!!!!!!" -The Legendary: Rogelio Escobar ![]() TRUCKY LINKS http://67-72chevytrucks.com/vboard/s...d.php?t=457750 http://67-72chevytrucks.com/vboard/s...d.php?t=461184 http://67-72chevytrucks.com/vboard/s...d.php?t=472848 http://67-72chevytrucks.com/vboard/s...d.php?t=417541 http://67-72chevytrucks.com/vboard/s...d.php?t=477788 |
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#12 |
Thats just prime!
Join Date: Mar 2002
Location: TEXAS
Posts: 720
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THATS WHAT I'M TRYING TO FIGURE OUT TOO!!!
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*69 GMC short bed stepside with a wimpy six that can barely pull itself. *99 Chevrolet Camaro Z-28 1 Bad 5.7ltr LS1 |
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#13 |
Transcendental Trucker
Join Date: Dec 2001
Location: Rockaway Beach, OR
Posts: 374
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I assume we're talking about the tank behind the seat.
It doesn't have a ground wire (at least mine doesn't), it grounds through the tank itself, probably through the bolts that hold the tank to the cab. I'm not exactly sure how you'd go about grounding it any better..
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Patrick Sullivan | sullivan@oregoncoast.com Rockaway Beach, Oregon 1972 Chevy Cheyenne C-20 1998 Dodge Dakota 4x4 So, fill to me the parting glass And drink a health whate'er befalls... Then gently rise and softly call Goodnight and joy be to you all! |
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#14 |
Senior Member
![]() Join Date: Jul 2000
Location: North Texas
Posts: 3,499
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Don't forget the brass float in the tank. Mine was leaking and did weird stuff depending on the gas tank level and temperature. Turned out it had a little gas in it. You can buy the float or entire sending unit from any of the 67-72 parts vendors.
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Mike 1969 C10 LWB -- owned for 35 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 24 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then! |
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#15 | |
Registered User
Join Date: Jul 2002
Location: St. James, MO
Posts: 1,239
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Quote:
You ground it better by pulling the bolts out, cleaning the rust out of the threads and from around the holes, and putting the clean bolts back in. Of course, the ground could also be iffy around the sending unit. Then again, as I said before, it could be the sending wire, too.
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'69 Longstep K-10: 327/SM465/T-221/Closed Knuckle Dana44/12-bolt. |
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