Probably both the alternator and battery. A good working alternator would provide all the juice needed while the engine is running. Another word, you can disconnect the battery and the car would keep running.
I would check for any loose connection, especially if you have installed any after market electronics. however, the oem battery only last about 3 to 4 yrs.
Quote:
Originally Posted by 370ZAWD
So I was driving home for lunch maybe 40 mph and then i notice the dash board cuts out and then comes back on. Immediately after that I notice my Voltmeter is bouncing around like crazy from 12 - 16 volts. I park and try to restart the car but its dead. What u guys think alternator or battery?  |