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Tacho not working properly


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Hi guys

A few days ago my tacho started doing funny things.

It currently sits at approximately 500 rpm at idle, and doesnt move much from there. Occasionally it will bounce around, or it will just remain at 0 rpm

I have absolutely no idea whats wrong with it. Ive taken the cluster out and tried to find any dry solder joints, but it all appears to be working.

Only once has it gone back to normal, after a few minutes of 'gunning it', but it later reverted back to 'not working'

Im going to purchase a multimeter to try and see if the signal coming from the ECU is buggered, or whether the actual tacho cluster is stuffed. Anyone have any ideas or suggestions, Id really appreciate it.



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