ok heres the problem..... accelerating full throttle from 1st and 2nd is good... but when i shift to 3rd full throttle.. car boggs bad.. shakes the whole car.. so bad i have to let off the gas or shift gears..... it also happens on the freeway also.. when i downshift to 3rd... wut can be the problem???


new plugs and wires
new cap and rotor
just changed the injectors
aem fuel rail wit fpr set at 40 psi

anybody??



Modified by dub from laos family at 7:53 PM 3/26/2008

 

ttt

 

any1?

 

No check engine light? Oxygen sensor could be an option as well...but not sure why it would just do it in a certain gear...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by geezer_187 &raquo;</TD></TR><TR><TD CLASS="quote">No check engine light? Oxygen sensor could be an option as well...but not sure why it would just do it in a certain gear...</TD></TR></TABLE>

nope.. no check light

 

I doubt it's the O2, that's more of just a fine tuning **** and not a major player in fuel delivery (for the most part).
Does it feel like the car is running out of gas a little? Like if you go around a corner with low fuel in the tank and you get that air bubble in your lines? I have had a problem like this too. I believe it to be my fuel pump. I would test your pump and it seems like your fpr is a little on the low side. I'm pretty sure it should be set to 44 psi.
Any thing else that goes on? What does it do on the freeway?