62 fuel gauge & temp gauge - NCRS Discussion Boards

62 fuel gauge & temp gauge

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  • John F.
    Extremely Frequent Poster
    • March 23, 2008
    • 2408

    62 fuel gauge & temp gauge

    I am new to dash & gauge troubleshooting. My fuel & temp gauge peg to the left sometimes or flicker when the turn signals are engaged. Any ideas? Also, a couple dash bulbs are burned out or not working. Do you need to take the dash apart to get at the bulbs. I bought a bulb kit & would like to replace all at one time.
  • Dennis C.
    NCRS Past Judging Chairman
    • January 1, 1984
    • 2409

    #2
    62 fuel gauge & temp gauge

    John,

    Could be that your fuel and temp peg to the left is that you have no fuel in your tank and your engine is cold.

    Beyond that, with some bloody persistance, you can change out all the dash bulbs - which seems like an appropriate place to start.

    With that done, I would suggest you visit the inherent Corvette ground wire issue. Many problems in our fiberglass cars with regard to wiring end up being "ground" related. A concept I suggest you become familiar with.

    Best of luck, DC

    Comment

    • Richard M.
      Super Moderator
      • August 31, 1988
      • 11323

      #3
      Re: 62 fuel gauge & temp gauge

      John,
      As Dennis suggests, I agree it sounds like a grounding issue. The Dash cluster gets grounded via a black wire in the main harness which comes from a black wire at the left inner rear engine valve cover screw. Check to see if it's there, and the black is properly attached to the back of the cluster. Also need to be sure the bolts that attach the small gauges to the cluster have good solid ground contact(no paint under nuts, etc).

      As an aside,(disconnect battery FIRST), please be sure you're brown fuel sender wire is attached to the correct terminal and properly tightened, and insulated from the pink positive lead on back of the gauge. The factory put a cardboard insultor between the gauge screw terminals, and a red warning tag for safety(pic-my 62 project car). NEVER let that fuel sender wire touch +12v !!!! OMG I get the shivers every time I think of this.......why did they do it this way??????

      Rich
      Attached Files
      Last edited by Richard M.; April 8, 2008, 07:04 AM. Reason: add photo

      Comment

      • John F.
        Extremely Frequent Poster
        • March 23, 2008
        • 2408

        #4
        Re: 62 fuel gauge & temp gauge

        Tank is almost full and engine warmed up. The temp gauge will register sometimes but then go to the left with the fuel gauge. Also is there an easyway or short -cut on the dash bulbs.

        Comment

        • Richard M.
          Super Moderator
          • August 31, 1988
          • 11323

          #5
          Re: 62 fuel gauge & temp gauge

          John, still thinking you have a ground issue. I'd check that out first......Other possibility is the pink power wires coming from the ign switch to the left gauges may be loose????

          Bulbs....remove seat for access and put some soft pillows on the floor. No real shorcut so get comfortable and replace one at a time. BTW, you do not have to remove the cluster to change them. The metal socket pops out of the hole where the bulbs insert. Tedious, but it can be done with long reaches....Rich

          Comment

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