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Stang_Crazy · 03-19-2001, 08:05 PM

I raced my buddy the other day and when we raced, my car was pulling good until about 4000 rpm. It started to sputter and could barely get up to 5000. We raced again and it did the same thing. It only happens under full throttle and only after 4000 rpm. I had put fuel system cleaner in it earlier that same day. Could the treatment be causing this to happen?? Is my fuel pump going bad?? I'm totally lost as to what the problem might be...

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91 GT AOD: 3.73's, Pulleys,PI Converter, 14.71@91.78mph
(before pulleys)

03-19-2001, 08:05 PM	#1
Stang_Crazy It's never clean enough! Join Date: Jan 1999 Location: Shaler, PA Posts: 1,542	Car sputters at high rpm... I raced my buddy the other day and when we raced, my car was pulling good until about 4000 rpm. It started to sputter and could barely get up to 5000. We raced again and it did the same thing. It only happens under full throttle and only after 4000 rpm. I had put fuel system cleaner in it earlier that same day. Could the treatment be causing this to happen?? Is my fuel pump going bad?? I'm totally lost as to what the problem might be... ------------------ 91 GT AOD: 3.73's, Pulleys,PI Converter, 14.71@91.78mph (before pulleys)