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
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