Question about 2005 Ford Mustang

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2005 Mustang Speedometer Issue

My speedometer was working perfectly until I have a flat tire (first ever) had to drive with spare (donut) and after i drove it home the speedmeter in park was at 50, then 60, and so on.... after tire was repaired and replaced, the speedometer would go down in 10 mph increments until back at 0... was fine for a while... then out of the blue it is back at park past 120 mph......

anybody have a clue???

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  • Anonymous Jan 24, 2009

    hit pot hole, since fell to 120. had guy mess with it,unpluged cluster, if u bump ignition it will work its way back to 0, but as u drive it goes back up??? also gas gauge messed up 2times, temp once,tac is ok.idk

  • Anonymous Feb 02, 2009

    Happens when it is parked overnight (and it gets cold). If you stop/start engine it will go down 10 mph at a time. If you bump ignition, it will also, but it will flood manifold.

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This is pretty common on the 2005 Mustangs, it's caused by failing stepper motors in the instrument cluster, they control the movement of the gauges. There's a guide on how to fix them here - 2005 Mustang speedometer problem

Posted on Oct 25, 2010

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