Ok, I got EAC fail on my fiesta shortly after purchasing, done some research and cleaned out the throtle body, cleaned the connections etc, hasn't done it since (Only yesterday)

However, I still have highly unstable revs and a very high idle revs as seen below

i.imgur.com/JQwwNtM.jpg

When I do some live diagnostics I can see the throttle position is being detected as about 0.5% down and jumping up to 0.9% for a split second.

I hear these horror storys of people replacing no end of parts and not fixing it, in your experience do you think I need

A) New throttle body
B) New throttle position sensor with modified wiring loom

Many Thanks

Ben