Another idle questions, searched

i thought surging was when it stalls?

I dont think i have any vac leaks. All that was checked at like a year ago. It could be my iac, the first time i drilled the hole, i forgot to plug in my iac, and it seemed like my car ran alittle better, like when i let off the throttle to shift the rpms would drop right down, right now when i go to shift, the rpms go up like 200rpm and it pisses me off soo much, and today when i started my car to go to school, everything seemed really humid it might have just been the weather cause it was really humid but like the clutch and throttle seemed all mushy and idle kept droping down and almost stalled if i didnt have the gas in, you guys think the computer just needs to adjust? ill play with it alittle more when i get home, i didnt have time last night cause it was 1am and i had to let the t/b seal sit, thanks guys