[Vwdiesel] Stock Tachometer

[Roger Brown]

Rudy wrote:
> The Tach in my 85 Jetta works intermittently.  Sometimes when I start it it
> works and sometimes not.  Sometimes it will start working while driving and
> when I look at it again it's not working.  I've tried turning on and off
> accessories and it doesn't seem to have any pattern that I can't see.
>  
> Anyone had this problem with the stock VW Tach or have any ideas where to
> start looking for the problem?
>  
> Rudy

Assuming a stock diesel tach, could be a loose "W" terminal connection at the alternator or it could be a sign of worn brushes 
in the alternator.

-- 
    Roger