Re: Alternator Voltage & Amperage (load) Testing

On Tue, 2 Dec 2003, Steve wrote:

> >>Last night noticed that my 91 Saab 900 at idle, with nothing on except
> >>for hazard lights, the fuel pump pitch noise was going up and down in
> >>perfect synch w/hazard lights on/off.
> >
> > Bad grounds.

> Or bad primary power feed from somewhere upstream of the
> distribution/fuse center but downstream of the
> alternator/battery/regulator. Either one would cause the same problems
> despite a perfectly good alternator and a perfectly solid and stable
> battery voltage.

Yes, agreed, but given the make-model-year involved, my money's still on
bad grounds.

DS