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Thread: Digital Dashboard (fuel gauge)

  1. #1
    I post a lot... porschpow's Avatar
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    Default Digital Dashboard (fuel gauge)

    Hey guys, tried looking on how and couldn't find anything related to my problem.

    When I start my car and run it, all gauges light up on digi dash. However, what I notice is that the fuel gauge (and only the fuel gauge) blacks out. No, it doesn't show as always empty , it shows goes dark after a few minutes of the car running. It's weird.

    Have you guys ever ran into this issue? It's an '89 Townie.
    "To Find yourself, you must first lose yourself"

    -1973 Volkswagen Bus Westy
    -1986 Honda Magna 700cc
    -1989 Lincoln Town car Signature Series
    -2011 Subaru Outback

  2. #2
    Beater gonna beat sly's Avatar
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    Sounds like the VFD is having issues. Possibly the voltage regulator for the grid. Gets hot and turns off. Might have a loose connection, cold solder joint, or some other issue associated with that one display.

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  3. #3
    I'm an air-conditioned gypsy gadget73's Avatar
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    I'd wager on internal power supply issues. Probably the standard bad capacitors answer.

    86 Lincoln Town Car (Galactica).
    5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

    91 Lincoln Mark VII LSC SE, triple black (Timewarp) - poly front bushings, KYB struts and shocks, Holley SystemMax1 lower intake, SilverFox AOD valve body,

    1984 Lincoln Continental TurboDiesel - rolls coal

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    I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

  4. #4
    I post a lot... porschpow's Avatar
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    Ok. Is there a write-up about diagnosing these issues?
    "To Find yourself, you must first lose yourself"

    -1973 Volkswagen Bus Westy
    -1986 Honda Magna 700cc
    -1989 Lincoln Town car Signature Series
    -2011 Subaru Outback

  5. #5
    I'm an air-conditioned gypsy gadget73's Avatar
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    I've never seen service docs for any of this stuff. I guess that was all held secret. Radio service manuals exist so I'm assuming info for the other stuff existed somewhere but no idea where.

    There is some diag info in the service manual but largely it tends to go check the power, check the ground, check the resistance of the sending unit, if all good, replace the cluster.

    86 Lincoln Town Car (Galactica).
    5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

    91 Lincoln Mark VII LSC SE, triple black (Timewarp) - poly front bushings, KYB struts and shocks, Holley SystemMax1 lower intake, SilverFox AOD valve body,

    1984 Lincoln Continental TurboDiesel - rolls coal

    Quote Originally Posted by phayzer5 View Post
    I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

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