[Vwdiesel] Erratic Tach

[82 Diesel Westy]

Sure sounds like an almost broken wire to me up in the
engine compartment, but check the wire going to the W
terminal in the back of the alt first.  Could be
grounding out, that would do that.

Bryan

--- Roger Brown <r.c.brown at ieee.org> wrote:

> Evans Antoniou wrote:
> > i started having the same problem tonight. 
> > 
> > i have a 96 Jetta AAZ diesel engine.
> > 
> > any help?
> > 
> > evan
> 
> If that is a real diesel tach (driven off the
> alternator W-terminal), then that could be a 
> sign of the alternator brushes wearing out.
> 
> -- 
> 
>    Roger
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