Could you E-mail me what you did to fix this problem if you ever figure it out? I am having the same problem with my 95 gt. It chugs a bit at crusing speeds and is gutless from the get go. We replaced plugs, wires, cap, rotor, both O2 sensors, fuel Regulator TPS sensor, fuel filter, cleaned the MAF sensor with electrical cleaner and put some fuel injector cleaner through it. Still runs like crap. Idles very good though now. The codes I am getting are 172 and 176 which is low voltage for O2 sensors and Lean bank 1 and 2.
Thanks,
Stuart
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