[jazzboe]

I have a '97 300TDi and the Tacho has packed it in. The needle moves at times (usually at higher revs) but usually shows no revs. Does anyone know where the sender unit for the taco is located as my genuine workshop manual is pretty useless on this issue? Anyone had this problem before?

 

[Lupinia]

Mine does this in cold weather, the needle doesn't even move until the dash warms up. Good luck fixing it!

 

[scoobymick]

I have a '97 300TDi and the Tacho has packed it in. The needle moves at times (usually at higher revs) but usually shows no revs. Does anyone know where the sender unit for the taco is located as my genuine workshop manual is pretty useless on this issue? Anyone had this problem before?

The pick-up is straight from the alternator,the smaller terminal white/slate wire.Check it's clean and fixing tight.
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[jazzboe]

Thanks very much for the help - will give it a go.