Sitting with the car idle or running down the road the car jerks everyonce in awhile. When that happens it throws the 311 and 314 codes which is o2 sensors codes but the goes away a few minutes later. The sensor are a year old. Whatever its doing its throwing my tps sensor off on the volts to .9 volts at idle and not reaching no more that 1.6 volts at full throttle. Replaced tps sensor and still does the same. Fuel pressure is at the low at 30psi. Can anybody shed some light on my madness any help or tips would be greatly appreciated.