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dash light flicker at idle

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    #1

    dash light flicker at idle

    I have an 89 Grand Marquis. Swapped to 3G alternator, maybe 2-3 years ago. It's been problem-free.

    Lately I have noticed my instrument lights flicker at idle. The idle hasn't noticeably changed. Battery is about a year old. I have had headlight relays for many years.

    At any RPM above idle the flicker goes away. Any ideas on what to look for? Get the voltage regulator checked maybe?

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    #2
    Yes get the battery and charging system checked. That would be the easiest way to start. Maybe check the idle rpm if you can. Of course ground and positive connection points are always worthy of attention.

    They still do the bat and charging tests free at the big box auto parts stores?
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      #3
      Check for loose bits. Battery terminals, chassis ground, etc.

      Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
      rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)
      Originally posted by gadget73
      ... and it should all work like magic and unicorns and stuff.
      Originally posted by dmccaig
      Overhead, some poor bastards are flying in airplanes.

      Comment

        #4
        I have several ground wires stacked up at the small factory headlight grounding bolt on the fender near the battery. I sanded them and firmly reattached, then sprayed with a shot of battery terminal protector. So far that seems to have corrected the flicker.
        Thanks!

        Comment

          #5
          Victory!

          Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
          rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)
          Originally posted by gadget73
          ... and it should all work like magic and unicorns and stuff.
          Originally posted by dmccaig
          Overhead, some poor bastards are flying in airplanes.

          Comment

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