I have a 98 Mystique 2.5L 5spd. During hard acceleration and acceleration at highway speeds my car skips. It is even more pronounced when the AC is on, and even is slightly present under cruising on the highway. I've talked to a few ppl about it and they say its the O2 sensor. That was replaced when I bought the car 6 months ago. Others say its the mass flow sensor, which is new. If that was the problem the check engine light would come on and...the engine would skip a lot more than it does already. Any advice?
