Pontiac grand am 98 jerks
My Pontiac Grand am having problems like jerking after going like 50 or 60. i notice it, when i let go of the gas and resume it jerks but still goes. When i was on a red light the car stoped on me. Turned it back on and started. Its been doing this about 3 months ago. Ive changed the fuel filter, spark plugs, air filter.