Ok its a 91 350 TPI, plugs, wires, cap, rotor, fuel pump were replaced recently. It ran fine until lately. It sputters still when it warmed up & when i get on it. The SES light does come on sometimes, but when I turn it off & then back on, SES light is off. It does hesitate from a stop. Motor is all stock & all R&R was done before I got the car.