car bogs a little on 1991 Pontiac Bonneville

sometimes at stoplights it sputters when i take off?
but then the car runs fine?

Not much information there. You could have a slight engine misfire cause by the secondary ignition. You may also have an engine sensor beginning to fail. The EGR system is another possibility for this condition. If the check engine light is on or has been on there may be fault codes stored which could lead to the cause of your problem.