I have a 2003 grand prix gt with a NONsupercharged 3.8. It was throwing 4-5 codes about a month ago... I replaced the parts called for and then some based on other forum research, including, O2 sensor, MAF sensor, plugs, wires, and cat converter... until I discovered a hole melted in the intake manifold. Still don't understand how that happened. But anyway.
I replaced it and had to re-replace the cat converter b/c it burned up and threw a code from being driven with existing problems.
Everything was fine for about 1000 miles. Now the car barely starts and will only run at an idle or slow acceleration for a few minutes, then stalls. If I unhook the MAF sensor, it runs down the road, but not efficiently. I have check the major vacuum lines and the throttle body intake hose and don't see anything obvious. I do not think it is a MAF problem, just something else disguised as one.
Please help!
