Hey all well i'm not sure how see if there is another thread about this but I have noticed when at WOT that the truck seems to jerk? best i can describe it would be like if you on wet then drive pavement to where u were kinda spinning to pavement. its not like supper bad but it is starting to annoy me i did ahve a full tank so i been running that down thinking bad gas well i was just under a quater left and got 7 gallons of 91. it seemed to get smoother then on my way home it did it again just a bit more noticed able and then was about the same but smoother. what do you guys think? tomorrow my dad will be driving it to see what it could be. I saw my buddy tonite he thought that it could be the intake is dirty... i wouldnt think it would do that rpms don change. if anything the sensor be dirty? alright lets start the guessing game?

 

the truck will hit a flat spot, getting a tuner will eliminate this. or you could try resetting the computer by disconnecting the neg. battery cable for a few minutes

 

what do u mean by a flat spot?

 

I believe he means a flat spot in the hp/torque curves at different rpm ranges.

EDIT:: Oh and don't be changing back and forth on your fuel octane levels. If you don't have a tuner, the HO motor, or boost stay at 87. You will do more harm than good confusing the computer.

 

I usally run 87 or 89, always wanted to throw in 91 but was to expensive even here in NJ, i tryed the battery thing but still seemed to do it. the tank only has 91 in it now and it seems to have gotten better but its still there berly but its a lot better now.

 

Alright guys, today i cleaned her all up dam she looks gd and also noticed sumone hit my passenger rear door with there door kinda went over it with my wax to clean it up. going to have to get sum touch up paint. I went to a friends house, when i cam home i gave it alittle bit more gas to see if it was all better which it was doing then i heard a bang.. kinda like a pop... so im thinking that it could be the spark plugs? I'm the second owner and got it last year with 30,000 on it and now at 47,800. i love my truck but this stuff is starting to get me mad. ive have had this truck go through of lot of things so far. if the spark plugs dont work maybe the fuel injectors?