2002 Grand Prix stalling upon acceleration

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My wifes car is a 2002 Grand Prix GT. It does not have a supercharger. It starts and idles great but upon any acceleration it sputters bad and stalls. It doesnt die but wont go.
We changed fuel filter and serviced the fuel injection but no help!

Any body got ideas

posted by  stroker63

no service engine light (3100 or 3800)
check plugs and wires (no mileage give)one or all breaking down under load

posted by  osborste

sounds like a clogged catalytic convertor. if you have under 80,000 this is still covered under warranty. call your dealer

posted by  DFgerbil

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