hopefully someone will be able to shed some light on this, my fiesta turbo kangaroos in every gear when i take my foot of the accelerator pedal, it is driving me mad now has been doing it for a week i thought it was something that may clear but it hasnt, .. does anyone no if there is a sensor or something that would cause it, i have looked for air leaks and stuff but cant see anything obvious...

any help appriciated

 

Try ur ISCV mate. Seems to be quite a common problem on the Fez

 

whats a iscv mate,

 

Ur idle valve. Should be on the side of the throttle body