2004 grand prix gt1

Asked by Mar 27, 2017 at 03:42 PM

Question type: Maintenance & Repair

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???

2 Answers


Unplug the Mass Air Flow sensor and she what she does, or I'm thinking possible clogged injectors..

I unplugged the o2 sensor from the manifold and nothing changed. Do i need to unplug the one on the other side of the cat too?

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