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Thread: Speedometer fluctuating, bad vss?

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  1. #1
    Super Moderator Six_Shooter's Avatar
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    Robert was simply saying that a similar phenomenon happens with ABS sensors, not that it is related to this specific issue though.
    The man who says something is impossible, is usually interrupted by the man doing it.

  2. #2
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    yar. good example that comes to mind are the front wheel speed sensors on a W-body: there is a ~many tooth reluctor at the end of the axleshaft near the wheel, so small ferrous objects that pass near it stick to the sensor, eventually enough stuff can build up on it to where it no longer produces signals, or at least consistent signals and things go wonky.

    the rear speed sensors though..... they're basically sealed inside of the hub, so it doesn't happen from the same issue. if the hub started falling apart internally, that could do it.



    inside of a trans though? LOT of iron/steel parts that could either outright break or slowly wear down into a metallic powder and either end up in the filter, on the VSS or the pan magnet. maybe on the PCS/shift solenoids too? i imagine the rather fast moving ATF would flush them easily though.
    1995 Chevrolet Monte Carlo LS 3100 + 4T60E


  3. #3
    Fuel Injected!
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    Problem fixed, was the vss going bad.
    Thanks everyone for the information, tips and comments
    Greatly appreciated.

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