I noticed today, while driving, that my battery light would come on and the voltage meter would read low for a minute or two and then everything would go back to normal. During the low spots, the car still runs fine except when at a stop it idles a little rough. I have disconnected the negative cable to the battery while it was running to test the alternator, it ran fine. I have cleaned both battery stems with a metal brush. I have checked the alternator belts to make sure that they are tight and not slipping. And I had attempted to find the ground wire to make sure it was well grounded, but was unable to find it. (Don't know exactly what that looks like or where it would be grounded to).
Tuesday, April 30th, 2013 AT 5:34 PM