Engine starts to Buck

2001 PONTIAC GRAND AM
14,700 MILES
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DAMETRI1
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About 2 weeks ago my car started acting up. It drives good and shifts good but when I get between 30-40m my car starts to buck and the rpm's bounce up and down. Sometimes it seems harder than other times and it only last for a few seconds then it's fine.

between 30-40 mph bucks and rpm needle bounces just for a few seconds.
Nov 30, 2011 at 4:02 AM
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RASMATAZ
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Could be surging/misfiring

Got to this links for more information:
Nov 30, 2011 at 4:08 AM
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