DID YOU KNOW?

The easiest way to troubleshoot the fuel gauge is to disconnect the gauge and check the sending unit and gauge separately. To do this, disconnect the sending unit from the gauge by unplugging the tail light harness from the mid-body harness. There should be a connector in the trunk, up around the left wheel well. This will isolate the fuel gauge from the sending unit, allowing you to check each one. Working with the tail-light harness, measure the resistance of the tan wire to ground with the fuel tank full of gas. The reading should be 90 Ohms or slightly higher. If the reading is low, then there is a problem with the sending unit, check that the float is free to move up all the way. If you are reading around 65 to 70 Ohms, the gauge will read half full (lower resistance = less gas). If this checks out correctly (around 90 Ohms) then check the fuel gauge, I use two 50 Ohm 5W resistors (easily obtained at the local electronics parts outlet). Go back to the trunk, and with the tail-light harness disconnected, place a 50 Ohm resistor from the tan wire in the mid-body harness to ground, turn the ignition switch to on, the reading should be just above half tank. Now connect the two resistors in series, so that you have 100 Ohms. Connect the 100 Ohm string between the tan body harness wire to ground, the gauge should read just above full.
  • No new posts General Discussion
    General off-topic banter. No religious, political or technical discussion.
    75 Topics
    161 Posts
    Last post by anna1342329296 View the latest post
    Fri Sep 26, 2014 4:08 am
  • No new posts Engine / Transmission / Rearend
    Engine, ignition, fuel, cooling, exhaust, clutch, transmission, rear axle
    52 Topics
    139 Posts
    Last post by silvachris4 View the latest post
    Wed Jun 04, 2014 8:36 pm
  • No new posts Suspension / Steering / Brakes
    Suspension, steering, brakes, wheels & tires
    10 Topics
    19 Posts
    Last post by Todd Z View the latest post
    Wed Jun 18, 2014 2:57 pm
  • No new posts Electrical and Wiring
    Charging, starting, lighting, gauges, HVAC
    13 Topics
    33 Posts
    Last post by Elg442 View the latest post
    Sat Jul 27, 2013 5:21 pm
  • No new posts Interior
    Inside the car...appearance, repair, upgrades
    19 Topics
    60 Posts
    Last post by hotrodder View the latest post
    Sun Apr 20, 2014 4:33 pm
  • No new posts Body & Paint
    Sheetmetal, frame and paint
    19 Topics
    44 Posts
    Last post by EVILTWINS View the latest post
    Mon Apr 21, 2014 7:47 pm
  • No new posts Shop & Tools
    Discuss your workshop and related equipment
    1 Topics
    1 Posts
    Last post by crash View the latest post
    Wed Dec 22, 2010 8:54 pm
  • No new posts Project Updates
    Post progress reports on your project car(s)
    7 Topics
    67 Posts
    Last post by 67cutlass View the latest post
    Thu Mar 06, 2014 10:28 pm

  • In total there are 5 users online :: 0 registered, 0 hidden and 5 guests
    Most users ever online was 172 on Sat Nov 17, 2012 2:39 pm
    Registered users: No registered users

    Legend: Administrators, Global moderators
  • Statistics
  • Total posts 1103 • Total topics 672 • Total images 203 • Total members 424
    Our newest member skillet34


cron