I just recently had the alternator in my truck replaced. The battery had been replaced a couple weeks before. Anyway, I got my truck back from the shop and was driving it the next day and I noticed the battery gauge would drop under acceleration and the E-Brake and Battery lights would pop on. If the AC was on it would drop in power to almost cutting off. But as soon as I would take my foot off the gas the volt meter would go back up to a normal reading (around 14). When it dropped it would go down to around 12 sometimes eleven. I am trying to figure out what the problem could be? Is it a bad alternator (all I could afford was a rebuild from O'Reiley's) or a bad battery? Maybe a bad connection when they installed the alternator? I checked the belt and it was fine. The battery connections are clean and firmly attached.
Sep 16, 2009 at 8:12 AM