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None of the guages in the cluster are actually tied to the devices they read out for. They are read outs of what the ECU determines to be going on. The problem can only be 4 things. A bad wire/connection, which I doubt, a bad sensor, a bad ECU, or a bad instrument cluster. The instrument cluster isn't made to be disasembled, so don't try. Only a dealer or a competent mechananic with good electrical skills would be able to diagnose this problem.

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โˆ™ 2011-09-12 20:39:08
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Q: How do you repair a 1990 Honda Accord speedometer that is always on the highest speed even when driving?
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