??engine??

ok well...in my Pontaic POS when im stoped and i push on the gas...it putters a little then goes and then it's over all slowin my car w/e it is and i duno what it is and i wanna know and what i can do about it...if u need more info E-mail me at [email protected] or IM me on AIM at Lugztaz69 or MSN at [email protected]

What year and engine size?