Pontiac Grand Am Hesitation

19 messages, Last post on Mar 18, 2009 at 9:23 PM

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#18 of 19 2004 Cold hesitation problem by hankster5 Mar 18, 2009 (9:23 pm)

#19 of 19 2004 Cold hesitation problem by hankster5 Mar 18, 2009 (9:23 pm)
I have a 2004 GT 3.4L tune up done and still feels like it misfires when it's cold off a start or light acceleration. The following have been changed: plugs, wires, fuel filter, throttle position sensor. Cleaned Mass Air Flow. There is no check engine light on or has never come on since this started happening a few weeks ago. Any comments?