Engine acting strange.

Good morning.
I have something strange going on. I have a 2004 GTP and when I have the car loaded (4big men)and after driving for about half hour there seems to be something going on, It feels like a ruffness in the motor when I go to pass (WOT) when I am just cruzing it is ok, Seems to only do it when the engine is hot and not all the time. all other times it is fine. Any ideas?
Thanks in advance.
Bill K

Could be the throttle sensor about to go bad. Mine is bad, I get an engine light every day, same thing, after its hot, in the morning when its cool I am fine, but it feels like the pedal is throbbing... like it has a mind of its own...

You may have the same problem in the PCM with the Electronic Throttle Control.. just an idea. I have the same symptoms.

OK, I found my prob, It was the Eibach lowering kit, I guess on some 2004 GPs when you lower the car it mis-allines the half shafts, The fix I found was to raise the motor about 3/4 to an inch, I tried this on mine and now the car rides sooooooo smooth again.

i have the same problem how did you raise the motor