I used some engine degreaser last night and it worked pretty damn good compared to what it was before. but now when i start her up she doesnt run as well as she did before i used it and washed it off. did it or some water get somewhere it wasnt suppsoed to? when i step on the throttle it feels like it want to die for a second and then gets in the higher rpms and what rpm should it idle at? it idles at like 700.

 

thats bout where mine idles at. as for the hesitation thing, you gotta be careful when sprayin ur engine, any electrical connections dont really like water. thats why its a good idea to do it with the truck running so it will already be runnin just in case u hit something with some water, id say maybe some water got into a sensor , now which one i cant say but try lookin and spray them with some wd-40.

 

My truck has a smilar problem. Whenever I hit the gas pedel it hesitates to go, like it just doesnt go, and then goes after a second. And when I did it today, it went down 400rpms from 750rpms idle. I have no clue whats happening.

 

still sounds like sensors to me, check the ones on the TB.