[NM57]

I have a 1998 jetta tdi and recently my speedometer started to act up.It would jump up and down then go to zero.It would stay like that sometimes for a day, sometimes only for a few minutes,i guess it has a mind of it's own.

Any ideas?

Thanks,Nebojsa

 

[chittychittybangbang]

Low voltage? Perhaps the alternator pulley clutch is going bad? To test, remove the serp belt and use a wood stick to hold the fan inside, the pulley should only rotate 1 way. Bad voltage regulator?

Bad cluster? Water damage in interior? Bad grounds?