right off idle it hesitates.when u first get on gas.

Is there a Check Engine Light/Service Engine Soon light on? If so a scan tool will be needed to retrieve codes stored in the computer of your car. The codes stored in the computer would indicate where the problem is. A professional grade scan tool allows key engine sensor data to be analyzed right off the scan tool without having to do intrusive testing at each sensor. It could be an ignition failure (bad plug or coil) the engine could be going lean just off idle as you accelerate, or the throttle position switch may not be giving a clean signal to the computer that you are accelerating/ have come off idle.