Hi RedStar71
Just doing some research on the same problem you have with the idle on your Fiesta and came across this great site!
I took my 05 Fiesta LX in for it's 3000 kms service today and the only problem I have is a miss in the engine at idle. It's just as you described but perhaps a bit more noticable as it shakes the car and you can really feel it through the seat and pedals, and see the tacho going up and down. It happens about every 5 seconds regardless of engine temp.
So Ford Service said 'we did not notice anything unusual' but then went on to say there were no codes logged in the computer and that I have the latest software version available. They then said they would 'log an EDR' (or something like that, EDS?) with Ford Australia to look into the matter? So they must realise it's a problem if there doing that, right?
Apart from the engine miss, the car runs great! But I'm not very happy with the response from Ford, it was like - just put up with it. I only put PULP in it, usually shell optimax or vortex. I've yet to try BP ultimate. I wonder if it will idle better with regular ULP?
Does anyone know how much the power outputs vary when using Regular ULP compared to Premium? Is 74 kw the output for 95 or 98 octane PULP?
Anyway, sorry to start off my first post a bit negatively, just looking for any help and advice.
http://www.fordforums.com.au/misc.ph...=0&forumid=78#
Eclipsee Steering