On and off power

[Jofenan]

Ok. Been driving the new car a few days now since passing it's mot on Saturday. I've noticed. Especially when cold. That the car tends to die on me especially in 2nd gear. A bit like turning the ignition off. After a few hundred yards it's sort of ok. Once warmed up you can be driving feeling like you have all 240 horses then the next time you pull away it feels half of them have escaped and then next time they're back! On the way home when i collected the car it threw up three fault codes. One was abs related. One was the crank sensor and the other was number 4 coil pack. I reset everything and they have stayed off for about 60 miles. Could a faulty crank sensor be doing this? My understanding is they cause poor starting when they fail

My car is a 99 t5 manual with 190k miles