[BigMuthatrknG]

I have been experiencing this problem for about a month now. The battery light comes on every once in a while when I am driving. No other warning light shows. When I am not moving it idles really low and starts coughing. If i don't clutch brake to a stop and keep the revs high it will just die altogether. My gf's dad is a ford master mechanic and he said it sounds like the alternator but I disagree. Usually when it is the alternator the check engine light comes on too. Any advice?