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Having an issue with part of the instrument cluster turning off, then back on while hard acceleration. Only the Tach and Speed seem to be affected. Fuel, Temp, oil, all remain ok and no loss of power or cutting out of any other electric components like dash/radio. The Alternator has been replaced, checked the connections and appear to be good. No battery light or engine codes. My guess is it'd have to be a bad connector somewhere that vibration while accelerating is causing the issue. Anyone have a similar issue or best place to start looking.
 

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I once had the intermittent gauge sweep w/battery light blink thing happening, which was caused by a failing wire in the alt pigtail. Too bad your sounds different. I'd guess a wire from one of the speed sensors, like output shaft, or a com-wire from the ECU to the cluster, maybe crank position, but I'd expect misfires if it was that one.
 
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