Recently had an expensive MOT involving emmissions associated with major oil problems, namely the oil b*****ing the engine up as no-one saw fit to change it for years! Now, 3 weeks after getting that sorted and the car running smoothly, it's started to feel juddery while accelerating and today, twice, it suddenly "jolted", the engine management light came on, the revs went up to 4-5000 briefly, then it stopped. I pulled over, turned the ignition off, then on, and the engine management light went out, although the car still feels juddery/jerky while accelerating, but especially at constant revs in 4/5 gear.

Had similar but not quite the same problems before which turned out to be crank & cam shaft sensors but i'm really hoping there's something cheap or something I can do myself to cure this problem. Spent way too much money on this car already, cars grrrrr!