1992 Mazda RX7 problem with my acceleration

1992 MAZDA RX7
129,000 MILES • 4 CYL • 2WD • AUTOMATIC
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1992 Mazda RX7 Turbo 13B mileage: 129,000. I am having a problem with my acceleration. If I only put the throttle down a little bit before half way, the car runs fine. It will boost and accelerate all the way to 7000 if I wanted it to. But if I push the throttle past half way, it stutters, and feels sluggish, if I floor it the check engine light comes on. It is intermittent though, because sometimes it will go when floored and sometimes it won't. I've put new secondary injectors, oxygen sensor, and bac valve. What could be the problem, the TPS? Or the boost sensor?
Nov 22, 2010 at 8:09 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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Check the fuel filter, fuel pump and fuel pressure regulator to make sure they are all functioning properly. Also, check the catalytic converters to make sure they are not plugged.
Nov 22, 2010 at 8:11 PM