b11fyn

iTrader: (1)

Hi all,

What could cause this, i have a 02 wrx sti ppp, it starts & drives well, when i put my foot down in 4th,5th or 6th its like as if the car is juddering, i have a boost gauge in psi & im sure that it doesnt go over 18-20psi.

thanks

shaun...

serega

Spark plugs most likely, had exactly the same problem.

sonic-scooby

I dont know much about faults on a newage but it sounds electrical to me. I know that on older classics the coil packs used to be a common fault. When a coil pack went on my dads 94 wrx it only juddered on boost but it did it in every gear. Sorry I cant be of more help but good luck mate and let us know how you get on.

newman90

could well be the fueling, as stated check the plugs give them a clean if they look ok.

Steve T

iTrader: (14)

As above. probally fueling or plugs.