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  1. M

    speedometer bouncing

    I have a 99 Expy with 5.4 and 89K miles. Speedometer is bouncing around and sometimes shuts down vehicle if it go past 100mph when sitting idle. it only does this in Neutral, Drive, and low. Park, Reverse, and 2nd there is no needle bounce. It tries to surge when in gear when as it stumbles. Any...
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