hi as above i have a ford fiesta rs turbo efi 1.6 cvh.

recently the car has became very erratic when foot is just on the throttle, if you take foot off or accelerate any further it runs smooth and well but just the moment your foot is just on the throttle say 5th gear at 60 mph ish it is jerky

could this be a duff throttle position sensor, has anyone else experienced this before?

its really hard to drive smooth youve got to either have foot off or be at faster speeds or under hard accelration