bogs down when shifting/accelerating

I have a fiero 2m4 and it boggs down when i shift and try to accelerate. I have a feeling it has to do with the throttle body but figure one of you fiero heads will know alittle more about the problem than i do. if you can help that would be great. thanx B.W.F

vehicle speed sensor codes have went off in last 2 days 24 and 45 does anyone have a speed sensor they want to get rid of? b.w.f

http://www.fiero.nl/cgi-bin/main.cgi?ECMCodes for error code help. Bogging down on acceleration sounds like clogged cat.