I just got my truck re-tuned today for my new gears (4.56s AWESOME), and we noticed somehing while driving it around.. in 2nd gear around 4-5k rpms it bogs down and then picks right back up and keeps pulling hard tpo the shift point.

But there isn't anything that my tuner could see in the scan that would have caused it. but yet its still there.

He was thinking maybe a pressure problem with the transmission, and we did check it and it was probably about a qt over-full. Would that cause something like that to happen.

Or what do you think it is?

thanks alot
-Joshua

 

was the truck tuned on a dyno or just street tuned. did he use a wideband or no???? did u see any knock on the scanner

 

street, yes he used a wide band, no knock or anything weird shows up on the scan other than the drop in rpms.

 

hmmm...hard to say without bein there try checkin some stuff like fuel pressure while driving. a/f didn't do anything crazy during your problem did it????

 

we figured if it was fuel running out up top, it wouldn't pick back up like it does and then keep on pulling. were going to take it to a dyno tomorrow and see if we can figure it out.