my car chugs misses and sputters under acceleration engine light is on. codes p0300 p0404 and p0411 keep returning. coils are good module is good plugs and wires are good

5

Asked by Sep 21, 2015 at 07:43 PM about the 2008 Pontiac Grand Prix

Question type: Maintenance & Repair

1 Answer

4,195

I don't know what the codes mean, so don't overlook them, but a plugged catalytic converter will exhibit those symptoms. A muffler shop should be able to check it out for you.

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