Question about 2003 Pontiac Grand Prix

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P0102 Grand Prix

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, including, O2 sensor, MAF sensor, plugs, wires, and cat converter... until i discovered a hole was somehow melted in the intake manifold. i replaced it and had to re-replace the cat converter due to it getting burned up from driving it with this problem. everything was fine until today. now the car barely starts and will run at an idle or slow acceleration for a few minutes, then stalls. if i unhook the MAF sensor, it runs, but not efficiently. i do not think it is a MAF problem, just something else disguised as one. please help!

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  • myzerman Jul 15, 2009

    I have used contact cleaner on both ends of the connection. The guy at autozone is "convinced" it is not the MAF, but it may be b/c he doesn't want to warranty a new one out to me. Is there anyways to test it on my own?

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P0102 is ---- mass or volume air flow circuit, low input.
Check the wires going to the maf sensor and at the connection. If all seems ok, you might need a new sensor, seeing how it ran a little better when disconnected.

Posted on Jul 15, 2009

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