Install a voltmeter gauge and watch it yourself. If it shows >13.5 volts
at idle and >14 volts on the highway, the alternator's fine.

TNKEV wrote:
>
> "THOR" > wrote in message
> ...
> > If your battery has not gone dead I would not replace it.
> >
> > "Smitty" > wrote in message
> > ...
> > : I took my 96 grand Cherokee in for a water pump replacement. The shop
> > : said that I also had a bad alternator. It worked fine in our -20 temps
> > : here in MN and the warning light has never come on. Do you think it
> > : could be bad?
> > : Thanks
> > : Smitty
> >
> >
> I would ask them to show you the test of your alternator in other words make
> them load test it in front of you if won't show you go some where else.