alt. surge
 

when I start my truck the volt gauge surges from 12 volt to 14.5 , it does quit doing this after a few min. is this normal or should I be looking for a problem ? you can actually hear the motor lug at first when the alt starts charging each time it surges
thanks again:scare2:

just the grid heater cycling. nothing to worry about.

Yup just the cycle. Its when it drops low and stays there that you might have an issue