I have a 2002 Dakota that I've had for ~10 years. The clock has always gained 7 minutes per year. First week in November, the alternator quit charging after running for 10 minutes or so. It tested bad at Napa, so I replaced it. That's been nearly 2 months and it hasn't gained any time yet. Seems like it ought to have gained nearly 2 minutes by now. Could the 2 things be related?
Truck Clock ?
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85Hokie
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Perhaps the old alternator was charging a little higher than normal.....the 12 v clock might need a charging of 13.5 volts to "work" perfectly.....maybe the old one was amping up (pun intended) the voltage a small bit, thus making the clock run about .01% faster....
then again that IS a swag.......
Chrysler, Dodge, Jeep service tech for 10 years. Chrysler brand vehicles, especially ones from 1998-2004, are very sensitive to voltage fluctuations. It can cause all sorts of issues from lighting, engine runability, transmission operation or accessories. The first thing I always check on them is battery terminal/cable condition and grounds.