The light are dimming and the engine viberates.
 

I have been noticing latley that my car's head lights are dimming,so bad that It seems like the lights are not even on. I would have to turn of the headlights and then turn it back on then it works.I will have a slight engine hesitations and viberation at the stop light. I am thinking that this can be the early signs of a bad alltanator or It's not spinning fast enough to keep charging the alltanator. I have the heat on full blast I am sure this should not do anything, but again.

RE: The light are dimming and the engine viberates.
 

Year, model, miles ? Condition ?
How old is your battery ?

RE: The light are dimming and the engine viberates.
 

2001 Town@countryLX 3.3l flex engine 82,300 miles and the battery Is about 3 years now. The condtion of the vehicle is exellent. I just have this Intermident hesitations and viberations at the stop lights. I am using 87 most of the time than once in a while I would use the 89 and 93 and feels slightly stronger and quicker.