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07-19-2018, 05:19 PM
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#1 |
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Registered User
Join Date: Nov 2017
Location: spokane, wa
Posts: 122
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Gas Gauge LSX 77c10
I just completed a 5.3ls swap into my 77 c10. I used GM in tank pump/sending unit from a late 80's GM truck into the original 77 tank. My gas gauge isn't working, it is pegged well past full. The gauge worked prior to the swap.
Is the late 80's sending unit and the 77 gas gauge compatible?
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1977 Chevy C10 SB, Turbo 5.3ls, TH400 |
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07-19-2018, 06:15 PM
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#2 |
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meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: Gas Gauge LSX 77c10
You'd have to lookup what the Ohm range is on them. If the resistance range on the sending unit is different than the gauge, it will do weird stuff. 0-30ohm, o-90ohm etc
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING  |
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07-19-2018, 07:03 PM
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#3 |
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Post Whore
  
Join Date: May 2015
Location: Alabama
Posts: 14,671
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Re: Gas Gauge LSX 77c10
To echo what brew is saying here's a troubleshooting guide that may help....https://www.fillingstation.com/artic...ugetesting.htm
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Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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07-21-2018, 04:15 PM
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#4 |
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Registered User
Join Date: Dec 2002
Location: Cactus Patch So. Az
Posts: 4,749
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Re: Gas Gauge LSX 77c10
What happens to the gauge when you remove the connection to the fuel tank with the key on?
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53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42 |
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07-23-2018, 12:43 PM
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#5 | |
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BMW & ASE Master Certified
Join Date: Feb 2004
Location: Houston, Texas
Posts: 1,266
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Re: Gas Gauge LSX 77c10
Quote:
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1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes 1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD A poor man buy's it twice finally got my domain name back, 87chevy.com.... site rework in progress |
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