alright i have an 86 iroc z and when i bought the car one bolt was broken off in the TPS sensor so i finally got around to fixing it. so i did the obvious and took the throttle body off the TPI and drilled out the hole retapped it and put everything back on. i knew the sensor has to be dialed in perfect so i tweeked it till all was good idling. but then i got in the car to drive it and realized i didn't have 2nd gear or 4th gear but i had had them just minutes before (as in before i took the throttle body off) the transmission is the typical 700R4 with a shift kit that i had gotten completely rebuilt just 8 months ago. any hints on what might have happened. 1st and 3rd are kinda suckin gas away and i need it fixed. thanks

 

help me out here people....