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My 94 grand am had the same problem I had to change my EGR valve which is expensive. I also need to check my knock sensor. I would say start with those. If your service engine light is coming on find a place that does free diagnostics and take it there to see codes.

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โˆ™ 2007-09-08 15:25:06
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Q: Your 96 grand am gt v6 3.1 does not have all of its power it should when running and idling it gets to point it almost dies then goes back up is it your spark plugs and wires or your o2 sensor?
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