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Originally Posted by jaybur_racing
1992 lumina Euro 3.1
My car runs decent at up to 3/4 throttle, if you smash the gas pedal down, it loses power and slows down, let it back to 3/4 throttle and it picks up speed again. if I keep it at 3/4 throttle in second gear it will continue to pull up to high rpms, so I am kinda ruling out the fuel pump, or filter. I have 38 PSI fuel pressure. I cleaned the IAC valve which cured my idle issue, and did the re-learn procedure, it will idle fine, no probs when stopping. ANYONE have a guess or similar experience? I know these cars have injector probs, but it wouldnt make sense that only at full throttle it dies out. I am going to do the ohms test on the injectors later on to rule those out, but just looking for some advice in advance! thanks
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Want to add, I have a brand new battery, NO SES lights, NO stored codes, NO bad vacuum lines, I have researched as much as possible, but I need help on this one, the car also has new plug wires.