2001 blazer missing

Help, I have a 2001 chevy blazer that is missing. It has the 4.3 liter v-6,
it only misses between 2-3 thousand rpm and it also has to be stone cold. Once it warms up the miss goes away. It started after i did a tune up(rotor cap, dis. cap, plugs, wires) I have since tried changning the coil (no change) and the ignition contol module(no change) Any ideas???

all vaccum hoses hooked up or can you hear any vaccum leak with just listing if not spray a little carb fluid on the vaccums you can see if it idles up theres your leak? from what i've read it sounds like tps. or vaccum leak also you got alot more sensors coils or tps or vaccum leak you said you changed the coilpack right?

all vaccum hoses hooked up or can you hear any vaccum leak with just listing if not spray a little carb fluid on the vaccums you can see if it idles up theres your leak? from what i've read it sounds like tps. or vaccum leak also you got alot more sensors coils or tps or vaccum leak you said you changed the coilpack right?may even have a cracked plug also try sea foam as an injecter cleaner. and all you men and women out there i will pramote sea foam every time as the best.

i have not noticed any vaccum leaks but i wasn't looking for that, Yes i tried a new coil with no change and a new ignition mudule with no change. How would the throttle postion sensor do this?

believe me it will on the tps i had 87 pa they couldn't tell on machine just said ground wire braking down so i come to my own conclusion it was the module that fixed that then when it idle up and down i put tbs on it fixed end of story. can i ask you something do you own a car lot? you have alot of problems on alot of diffirent cars???