okay i just got a 98 ranger 3.0 4x4 and everything on it works nicely and now all off a sudden i was driving on the highway and once i got over 70 it would start like almost skipping .... if i could put it in to words i wouldnt say like the car shaking but everyone could feel like the motor was bogging down, so i was just like okay dont go over 70. Now over the past week its been doing the same thing except everytime I try to push on the throttle and get up past 25 it starts cutting out and making a weird noise like brrrrr brrrrr brrrrr like it needs a tune up or something but it can get up to 100 but struggles .. i dont kno what to do but ask , and it only has 107,000 miles always changed oil every 3,000 miles and we just changed the oil maybe less than a month ago please help thanks, mason