searched but really didnt come up with anything...considering a brake booster problem but dont know much about that. my car is bucking under boost also the ABS light is on (if that has anything to do with it). it started yesterday and seems to be getting a little worse. i recently changed plugs, i went with 9's all around bc it was breaking up with 7's and 9's and it ran great that was about 2 days ago so it ran great for a day then started this the next day. i havent pulled the plugs to see if they're fouled now. i also havent pulled any CELs but this just happened over night not while i was driving...

 

^

 

make sure the plug wires are hooked all the way
they tend to get loose

 

plug wires are tight. had a little time to pull the top plug on the rear housing and it appeared a little tan on 2 sides so i cleaned and replaced i didnt have time to pull anymore to check them. i also pulled the fuel pump and found nothing. i pulled codes and got engine air thermosensor well i unplugged it and plugged it back up and drove around and it acted the same then i pulled codes again and the thermosensor didnt come back up. the 3K hesitation is horrible now and it hesitates about every 1,000 RPM. it really wont let you go past 1/2 throttle unless its in 4th or 5th then it doesnt really boost it shows good boost but feels like its holding itself back. anyone have anymore suggestions?...

 

^

 

ive also been premixing way too much but recently realized i didnt have to use so much. so could a fried O2 sensor make the car hesitate throughout the powerband like this?...

 

The ECU isnt reading from the O2 sensor while under the conditions your discribing.

 

problem fixed it was the same thing as last time when my car wouldnt start at all except it wasnt the clamp the actual hose tore. but it was the hose that connects my fuel pump to my fuel line. one of the clamps had broke but luckily didnt break off and fall into the tank but i replaced the hose and put new clamps on it and its running like a champ again...

oh and i got the O2 sensor idea from the FSM under fuel it said "symptoms" and replacing the O2 sensor was one of the solutions...

 

I have similar sympthom right about now. It hesitates under boost and if i rev it in idle past 4k rpm my ABS light comes on... I doubt my problem is with fuel line, but are you talking about the fuel lines back at the gas tank or the ones going to the Injectors?

Thanks

 

O2 sensor only affects cruising at very light throttle.

Dave