Intermittent engine problem 2000 Intrepid

2000 Intrepid (manufactured in 1999, 2.7, 147K miles, Calif. Ems.

Error Code P1391. Have replaced Cam sensor, crank shaft sensor, used PCM.

When cold outside, below 40 degrees F, car misfires and jerks repeatedly. Sometimes a few times, sometimes a lot, at low speeds and highway speeds.

Please help. Wife is now driving my truck.

Thanks.

Jeff