I just got a call from my girlfriend and she said her 1996 2 wheel 2 door blazer was losing power. After a while she said it seemed ok. She drove it a little bit then it lost power again. It has 178,000 miles on it.. I have recently replaced her Fuel pump,Cat. converter, before and after converter O2 sensors,battery, plugs, wires, cap,rotor, fuel filter,air cleaner. I am running thru my head possible senario's as what to troubleshoot so when I get there tomorrow I will have a plan as where to start.I did look at the transmission fluid and looked good and red and didn't smell burnt a couple of weeks ago. I did drive it recently and the transmission seemed to be working well... Any sugestions?