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10-12-2011, 11:34 PM
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#1 |
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Registered User
Join Date: Jun 2004
Location: Los Angeles
Posts: 277
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got a new sending unit...gauge still doesnt work
I got my new sending unit today. I hooked it up without the gas tank and the fuel gauge needle still doesnt work. It stays at 1/4 full. What other things should I check?
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10-13-2011, 03:08 AM
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#2 |
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78 Big10 454
 
Join Date: Jul 2008
Location: Pismo Beach, CA
Posts: 839
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Re: got a new sending unit...gauge still doesnt work
Check the integrity of the sending unit's wiring, which means getting under your truck. On both my C-10 and my cousin's truck, the wiring was grounding out on the frame, right below the passenger side door. The clip holding the wire secure to the frame had frayed the wire's insulation and was giving both of us false readings on the gas gauge. A bit of electrical tape solved the problem.
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10-13-2011, 08:53 AM
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#3 | |
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Registered User
Join Date: Sep 2010
Location: Marble Falls, TX
Posts: 1,575
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Re: got a new sending unit...gauge still doesnt work
Quote:
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Michael Re-starting the neglected '77...http://67-72chevytrucks.com/vboard/s...=425464&page=9 |
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10-13-2011, 09:26 AM
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#4 |
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6.0 powered square
Join Date: Feb 2008
Location: Mesquite texas
Posts: 3,459
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Re: got a new sending unit...gauge still doesnt work
Do you have a good ground from the sending unit to the frame
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Aaron 1980 c-10 short bed lowered, cammed 6.0, 4l80e 3600 stall, smp tune, wilwoods, and flames best time so far best et 7.86 @87 on motor 7.57 90 on a 75 shot Build http://67-72chevytrucks.com/vboard/s...d.php?t=283326 |
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10-13-2011, 10:56 AM
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#5 |
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Registered User
Join Date: Jul 2007
Location: Tucson, AZ
Posts: 3,189
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Re: got a new sending unit...gauge still doesnt work
Aside from checking the grounds, you could have a bad gauge. I replaced both my sending units and then found out it was my gauge that was bad.
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10-13-2011, 04:03 PM
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#6 |
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Registered User
Join Date: Jun 2004
Location: Los Angeles
Posts: 277
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Re: got a new sending unit...gauge still doesnt work
I use the frame as the ground. Im going to use my angle grinder to clean up where the ground wire bolts to. My gauge cluster seems fine, the other gauges work. I guess ill take it off and inspect that as well.
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10-13-2011, 04:49 PM
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#7 |
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Registered User
Join Date: Mar 2010
Location: Beaufort SC
Posts: 583
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Re: got a new sending unit...gauge still doesnt work
Mine had a connection problem on the guage, where the printed circuit attaches to the guage. I would tap (smack, hit) the guage and then it would kick on again, kinda annoying.
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1981 Dodge D-150 (under construction) 2007 Chevy Suburban 2010 Dodge Charger R/T 1980 Kawasaki KZ 440 2004 Harley Sportster 1200 |
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10-13-2011, 07:23 PM
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#8 |
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Registered User
Join Date: May 2010
Location: laurel hill Fl
Posts: 645
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Re: got a new sending unit...gauge still doesnt work
IF it's non of the above it may be the gauge or printed circuit
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1985 C10 Custom Deluxe LWB 305/700r4 [ Goldfinger ]  1999 k3500 crew cab dually 6.5tdi/4l80e |
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10-19-2011, 10:24 AM
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#9 |
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Registered User
Join Date: Oct 2011
Location: Crestview Florida
Posts: 30
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Re: got a new sending unit...gauge still doesnt work
What did you end up doing?
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10-19-2011, 09:05 PM
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#10 |
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Registered User
Join Date: Oct 2008
Location: Rhode Island
Posts: 37
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Re: got a new sending unit...gauge still doesnt work
Im also in the club of no gas gauge, Ill have to check the ground too.
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10-19-2011, 10:08 PM
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#11 |
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Registered User
Join Date: Jan 2011
Location: San Bruno, CA.
Posts: 348
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Re: got a new sending unit...gauge still doesnt work
Mine just drops down to 1/2 full as I waste gas, but then it won't go lower.
Posted via Mobile Device
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1975 Chevy Cheyenne w/ v8 350 and TH350 Siverado interior Fleetside bed aka "The Beast" aka "Cheyerado" |
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10-20-2011, 01:27 AM
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#12 |
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Registered User
Join Date: Jun 2004
Location: Los Angeles
Posts: 277
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Re: got a new sending unit...gauge still doesnt work
I checked the wires and they seem ok. Im gonna go to the junkyard and get another fuel gauge. If that does not work well then I have no clue what to do next. I was just wondering might a fuse be the problem?
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10-20-2011, 01:46 AM
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#13 |
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Registered User
Join Date: Jan 2011
Location: San Bruno, CA.
Posts: 348
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Re: got a new sending unit...gauge still doesnt work
I don't think there's a specific fuse for it, but then again I could be wrong.
Posted via Mobile Device
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1975 Chevy Cheyenne w/ v8 350 and TH350 Siverado interior Fleetside bed aka "The Beast" aka "Cheyerado" |
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10-20-2011, 07:45 AM
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#14 |
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Registered User
Join Date: Jul 2007
Location: Tucson, AZ
Posts: 3,189
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Re: got a new sending unit...gauge still doesnt work
I would stay away from junkyard fuel gauge unless you can somehow verify that it is in good working condition. A new fuel gauge from Classic Parts is about $50. If you can "borrow" a known good working fuel gauge from another square that is the best option.
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10-23-2011, 10:39 AM
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#15 |
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Registered User
Join Date: Oct 2008
Location: Rhode Island
Posts: 37
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Re: got a new sending unit...gauge still doesnt work
Maybe you could go Dakota digital w new sending unit. After all it is very dangerous not knowing your fuel level. *helps justify you getting a baller gauge kit*
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10-23-2011, 11:31 AM
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#16 |
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Registered User
Join Date: Aug 2011
Location: Wichita, KS
Posts: 318
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Re: got a new sending unit...gauge still doesnt work
Up until recently, I thought my sending unit was bad. Turns out, the gauge needle had been installed wrong.
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Project and Truck Specs: http://67-72chevytrucks.com/vboard/s...d.php?t=483381 |
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