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Thread: How do I configure fuel level on Digital Dash?

  1. #21
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    25,541

    Default

    Yeah, it didn't like that dirty chassis ground. Thanks for the update.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS T/W 11R 205 heads, 232°-244° duration/.623" lift/114° LSA camshaft, 12:1 C/R, TFS R-Series FTI ported intake, BBK 80mm T/B, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 200A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, -6AN fuel system plumbing, Walbro 255 LPH pump, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/3000 RPM converter, B&M Hammer shifter, FPP aluminum driveshaft, FPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 M/T Street Comp tires.

  2. #22
    Join Date
    Dec 2015
    Location
    Connecticut
    Posts
    38

    Default

    Alright, problem is fixed! I read from the sender ground to the sender wire and got 66 Ohms which is correct for the amount of fuel that I have in the tank. Next I ran a 10 foot test lead from the ground at the tank and connected that to one side of my meter. I connected the other side of the meter to my ground location and checked for resistance. Resistance was around 1.2 Ohms, not terrible and as far as I'm concerned for now it will do as an adequate ground for the fuel gauge. Next I hooked my test lead up to my Digital Dash ground location and checked the resistance at the I/O connector for the Digital Dash. From the tank, it was bouncing all over, I checked the connection point at the tank wiring harness and found my problem. When I disconnected the factory spade terminal, I checked the tank side for resistance reading and got 66 Ohms. I cleaned the connection and put some anti corrosive conductive lubricant on the connection and clicked it back together. This time I went just after the connection and did my resistance check, jumping all around. I cut the male side spade off soldered a new one on and connected it. Fuel gauge reads correct now with no issues. I took the 1/2" piece of wire with the spade terminal on it over to the bench and inspected the crimp, solid, the shiny coating on the male spade connector. It looked gray and dull, I did a resistance check from the metal portion of the spade connector is several spots to the piece of wire on the end that I cut off. Reading all over the place. Moral of the story, get a meter, do a resistance check verify your wiring check you terminal ends and remove any connectors that arent weather tight. I'll be removing the factory connector and replacing it with a Delphi Weather-Pack single wire connector. Hope this helps if anyone has similar symptoms.

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