Hello members, i know my fiesta isnt an ST version, but i have nowhere else to search and ask for help.
So in the mornings when i go to work, i always start up my car to warm it up while i take a smoke, for years it was okay, and now in the past 2 months it has started to jerk, but only when im driving, while it sits i can easily rev it up and it doesnt jerk, but as soon as i put it in gear, 2nd,3rd,4th it jerks for first 5 minutes(while driving), then, my guess, the transmission fluid heats up and it doenst jerk for the whole day.
Could it be transmission fluid? (recently i changed out pusher bearing for my clutch and selector for my gearbox, at the ford dealership. they said everything is fine with gears and stuff)
My car: Fiesta 2007 MK6 1,3 petrol. (221000km)