The engine is running like crap up to about 2000 rpm and will still hesitate when past that when i hit the gas. i have replaced the plugs, wires, cap, rotor, both belt and the fuel filter. it has 97k miles and just started doin this a couple days ago... anyone got any thoughts that could help me out?

 

check your compression

 

check timing

 

i should add that it onlys does this after it is warmed up when i first start it it doesent do it

 

And if both of those are in check run some Seafoam through it, and some in the gas tank.

 

check tps, then if its okay check timing.

 

how would i "check" the tps what would i be looking for if somehting is wrong with it and where could i find it?

 

http://www.4crawler.com/4x4/CheapTricks/TPS/index.shtml

 

your tps and timing arnt going to make it run rough after warming up. You probably have a tight valve. You need a comp test