Well, like most great answers in life, it could. But your symptoms point to adjusting everything else properly first (TPS, ect), then worrying about the other what ifs second. Like I said before, I know third gens not second gens and in one of the threads I read I think it said the 2nd gen has 2 tps's? I have no idea. Dont know if the following links will help. First one is about the second gen, the one following is step by step how to adjust everything on the third gen.
Idle Adjustment, Timing, Tps, Bac Unplugged Or Not, Mm Or Lite Test, K.i.s.s. Please - RX7Club.com
fixed my idle problems, backfiring, bucking and more... - RX7Club.com