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Rev Guage drops out

Discussion in 'VR - VS Holden Commodore (1993 - 1997)' started by Tommy_guns, Jul 11, 2017.

  1. Tommy_guns

    Tommy_guns New Member

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    I have a 2000 vs ute and sometimes the Rev Guage will drop to zero.
    If I give the dash a good whack it will jump back up.
    I'm pretty sure I have an exhaust leak somewhere could that interfere with it?
    How can I stop it dropping down?
     
  2. losh1971

    losh1971 Well-Known Member

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    Your exhaust leak shouldn't be affecting your rev gauge.
     
  3. Tommy_guns

    Tommy_guns New Member

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    Do you know what else it could possibly be
     
  4. hako

    hako Donating Member

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    Could be a bad connection or a break in the printed circuit board. To check the back of the instrument panel look up the "How To" on replacing the small plastic cog that breaks in the speedo.

    Good Luck.
     
  5. EYY

    EYY Well-Known Member

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    Mine did that with the speedo. I just pulled the cluster apart and replaced the whole speedo unit - you can do exactly the same with the tacho. It's actually incredibly easy if you take your time.
     
  6. CCCMikey

    CCCMikey Active Member

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    Does it drop to zero while driving, or does it sometimes not wake from zero when you start and drive for a bit.

    My speedo, temp and fuel gauge all tend to get stuck at zero - especially the temp and fuel. A bang on the dash and they bounce up and stay up, so I conclude that the lubrication within the gauges has turned gummy. But they never drop to zero from an active position.
     
  7. gtrboyy

    gtrboyy Well-Known Member

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    ^^^ Nope that's common classic dry/cracked solder issue..3 pins in cluster but you have to remove dash,cluster apart to get to part that needs soldering lol.

    Flick dash with finger left hand side of dash...most high mileage commodores eventually do that & most level 2 dash have broken odometer gear.

    Should be thread in vn section sticking gauges/not working
     
  8. Tommy_guns

    Tommy_guns New Member

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    It drops to zero while driving. A bang on the dash will sometimes bring it back up but not all the time.
    Will buying a completely new cluster work?
     
  9. hako

    hako Donating Member

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    One from a wrecker may also be bad. I'd pull the insrument panel first and check for breaks in the printed circuit board.

    Good luck.
     
  10. Tommy_guns

    Tommy_guns New Member

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    It all looks fine.
    Why would it drop in and out? If there was a break I would have thought it wouldn't do anything
     
  11. hako

    hako Donating Member

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  12. The1

    The1 A Memcal a Day Keeps..

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    Tacho reads from dfi module so either that or tacho itself perhaps
     
  13. jeepster

    jeepster Member

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    I have replaced 3 instument clusters (or parts thereof) in VS. Either the speedo or fuel guage were sticking. Silicone lube would help for a while. Never had a tacho stick. Sounds like electrical.
     
  14. Tommy_guns

    Tommy_guns New Member

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    I picked up a cheap secondhand one everything works now except sometimes have to tap above the fuel and temp to get them reading. Fine once they're up so I can deal with that
     
  15. harrop.senator

    harrop.senator Well-Known Member

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    Make sure the two drivers side effects plugs up near booster are 100% clipped in properly or contact clean. Took me ages to figure out yesterday why i had intermittent tacho n fuel.
     

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