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fuse to the dash gone ???
If the tach wire shorted or melted.
There are several things that can cause your engine to misfire and the tachometer to not work properly. The most common cause is a malfunctioning vacuum hose.
Either the fuel pump isn't working properly or the fuel filter is plugged.
Its going bad.
you need a new onr they do this occasionally and then need to be replaced
Check the fuses near the drivers left foot
A failed instrument cluster.
I would say the mechanic didn't re-install the tachometer wire ,whereever it goes on this motor,which I don't know. I would say the mechanic didn't re-install the tachometer wire ,whereever it goes on this motor,which I don't know.
check the fuse
why would a speedometer stop working on a Mazda
Hi the tacho runs off the alternator & when it stops working it is normally a sign of a fault with the alternator so firstly i would check that the alternator is working corectly