Hello, I have a 1996 Mazda B4000 with a 4.0 EFI and I have noticed lately that once the truck has warmed up and the idle drops so does the battery gauge. It drops very low to the point of the headlights start dimming and the fan motor slows down. But, once I start driving, the lights get bright again, and the fan speed goes up too. Does this mean I need a new alternator? Is there some way to confirm that I need a new alternator? Thanks.
Wednesday, January 5th, 2011 AT 1:57 AM