i have a 99 chevy silverado new body style 4.8 and ever since i took of my tranny and put a stall it started choking if i hit it off a take of it just sits there bogging down so i took the stall back of and put it back how it was and it still does it and just driving it normal still does it. I checked fuel pressure, spark, and i have changed every sensor there is 2 change and is still does it Do yall have any ideas on what can it be

 

clogged cats? Do you have a tune?

 

ok my friends at work but i can help a little bit....

he has no cats, tune by file, stock converter, but he does have an exaust leak from where he disconnected the egr from the manifolds, and

 

i dont have cats yeah am tuned with file

 

what yall guys think any more ideas on what it could be i changed tune and computer and it still does it do yall think it could be the fuel pump???

 

if i hit it off a take of it just sits there bogging down
I have NO idea what that means.

Google the word "Sentence" please. It's hard for people to help you if we don't know wtf your saying just because you can't end a sentence with a period before you start a new thought.

It doesn't sound like it has anything to do with your converter but Cats maybe. Did you pinch any wires when you put the trans back in?

 

I think he meant that either at WOT or normal driving it bogs. He doesn't have CATS and is tuned for them.

 

I hooked up a scanner today and all the sensor seem 2 be working fine.The only thing i saw was that the timing sits at 30 in park about 22 in gear and when u try 2 power brake it it goes negative and looses power.Also that Tranny i put was off a Camaro i dont now if that would cause all these problems,Since that was the thing i change when it fucked up.

 

Check to see if you smashed a harness between the transmission bellhousing and engine.

 

ill check that tomorrow thanks