well if his light is flashing at idle, thats got to be his alternator. I'd be willing to put quite a bit of money on the alternator being bad.

By the way, my 98 SVT does the same aroudn 5K RPMS, guess ill hafta change mine soon.

98 SVT #1652 of 6535 My SVT "If everything seems to be going well, you obviously don't know what the hell is going on."