I am curious to hear what they find.

 

Ok so I have yet to get to the dealer but I did get ahold of a scanner capable of showing me only certain lines at a time. When I'm getting on and off it it starts to bog as mentioned before. While this is happening my STFT 1 goes way negative -25 to be exact. With that said where do I start. I know It's dumping fuel in somewhere but what do you guys think.
Shane

 

Take a read on this What are fuel trims all about?

 

Thank you I appreciate it. However I have changed my o2 sensors AC delco heated sensors both bank 1and 2. No change. It only happens for a moment then smooths back out runs normal afterwards. I'm lost but I appreciate any help you can offer thanks
Shane

 

The part I was looking at on the article is where it talks about looking for vacuum leaks and something else if you have double digit variations in trim. Not at my puter and I can't remember what the other thing was that was mentioned.

 

Ok today I removed throttle body gave it a good scrubbing looks brand new! I also cleaned IAC valve and replaced TPS while It was apart. I looked the best I could inside the intake with flashlight and mirror. Every thing looks pretty good no puddles or any signs of leaking. I did however notice that cylinder one injector area looked a lot "cleaner" then all the rest. Not sure if this means anything. But I have done a pressure and leak down and it's all normal. After I buttoned her back up I jumped on highway and same conditions back to haunt me! Getting into the the throttle seems ok back off and get back in it and then the stuttering happens light flashes and my fuel trims go way high in the negatives. Doesn't this mean the PCM is TAKING fuel away to counter a RICH condition? Any help would be greatly appreciated! Thanks again guys
Shane

 

So 5 years later... what ended up being the problem? Solution?

Thanks...

 

Guess we will never know. BlazerHeadaches hasn't logged in since 5/2/2014.