i have changed just about every part on truck....my problem is in gear it dies at stops going around corners...runs very rich...i have changed fuel pump,pump relay,egr valve,egr purge sensor,vaper purge valve,map,throttle position,iac,rebuilt throttle body and fuel pressure reg,ign control mod,ign switch,plugs cap rotor..
and the computer......still have problem as well as when i changed computer it now slams into gear as well as idleing poor and shutting off in gear but not when in park......i dont know what else to do i am at a complete loss....

please someone help...
thanx

 

I had a problem very similar to yours. I went through every possible sensor and nothing. Finally took it in since it was making me so mad and it ended up being a bad injector that was leaking. That's what I would look at next.