My speedo intermittently flies up to and past the 100mph mark and back
again. This would be liveable apart from the fact that the radio
volume goes up and down with it. Is this just a case of replacing the
The clue is the radio volume though. The radio receives a signal from
the speed sensor so that it can vary the volume according to the
speed/engine noise. In the case of the OP, its extremely likely that the
VSS is the culprit,
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