Ok guy I'm at a stand still here on my lo3 it ran perfectly then one day on my way to school it started running bad back firing real bad would not run well I checked codes I had the code 42 so I assumed it was the est because my prob goes away when I undo the wire by the blower motor but with the wire plugged in in back fires out the tbi and exhaust times good have not messed with it but so far I put a new dizzy in that came with new icm but I'm still having the prob your thoughts guy and plz don't lecture me about not useing proper grammar

 

I had roughly the same problem one time. Car would backfire and hardly run when it warmed up. So I replaced every dam sensor on the car and it didn't fix it. So one day I just turned my key on all the way but didn't start it and I herd a rapid clicking noise, I poped the hood and my injectors were just randomly firing for no reason. Turned out my ECM was bad. Thats just my two cents.

 

Thank you is kinda been thinking that but when I have the est wore it runs good but I can't drive it on the highway like that due to needing timing to change