2004 grand prix gt1
The problem is the car is bogging down and
stalling. It started out throwing a code for fuel tank
pressure sensor so i replaced that. The service
light went out but same problem. Since, ive
replaced fuel pump, new fuel filter, and replaced
fuel pump pressure relay and still nothing. A buddy
told me its a clogged cat... It idles just fine. When
not in gear i can red line it all day and no bogging
and stalling out but when i put it in gear and give it
some gas it bogs down real hard and stalls. Any
suggestions to what this might be???