This started about two weeks ago..When you start it up and let it run for a minuet and when your ready to leave and start to stop at your first stop it jerks..
like somebody hit the back of your car.. After a jerk or two theirs no more for the rest of the day..Next day again when i first start it up and let up on the gas and start to stop it will jerk again. Can it bethe spark plugs or just need a transmission fluid change and a new filter?

 

Probably both. With that vague of a descripion, who knows. What engine? What transmission? How many miles? Maintenance history?

 

Start with the codes, if any. Yep could a number of things related. Or might just need a major tune up.