I am getting a very strange hesitation at 5000-5500rpms at HALF THROTTLE to 3/4 throttle. It does NOT appear to be present at WOT.

It seems to be running a little lean maybe? like loosing fuel. I'm not quite sure but it's all of a sudden, just kind of studders (than i back off the throttle and all seems normal), i just noticed it tonight as i was coming home on the usuall twisty roads in 3rd gear.

-Markus

"I've not changed anything lately and she's been running great ... until tonight"

 

another sleepless in clearwater, eh? I work nights here in clearwater. Not sure about your prob, though, my vert runs pig rich right now. I can't even get 200 mi out of a tank of gas.

 

yeah man, just got off work about 30 min ago. Still drinking my beer for bedtime lol

I wish i knew what this problem was about, Oh!, did i regret to mention, my idle is acting funny as well.

SOoO lets recap
-Hesitation at 5000-5500 rpms at 3/4 throttle
-strange bumpy/rought idle

-Markus

"Any ideas?"

 

vacuum leak would be my first guess, actually, now that you mention the idle prob. That's where I would start.

 

vac leak cause hesitant thottle? i'll check it out non the less

-Markus

"Thanks"

 

anyone else have any idea's what the stuble/hesitation could be?

-Markus

 

Ok, i'm an idiot. A couple days ago i did the TB mod, removed BAC and EGR. and well. (dont laugh) forgot to plug the TPS back in! lol. strange that it ran fine all up until yesterday, than started acting up.

-Markus

"She's ok now. Well, i've not driven her yet so we'll see"

P.S What happens when TPS is unplugged? codes? rich? lean? engine damage? lol