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I have a Fiat punto-Mk1 55-1.1 1995 the speedometer, drops to 0 for a short time then works again perfectley about once a month but becoming more ofter. Is it a mechanics drive or electronic. might it be a loose connection, where do I fine the ends to check?

it was the speed sensor, on the back of the gearbox. goes quite often peter, thanks

i can not understand speedo meter how to stop