I have a fiesta mk5 2000plate 1.25 zetec s.
When coming upto a junction I put my foot on the clutch and I noticed the revs go down to 1000rpm then upto about 1300rpm then back down to 950rpm.
I have dont alittle research and some people say that it maybe something to do with the engine temp sensor, I have noticed that after running the car for about 30mins the temp gauge shows 1/4 doesnt go up anymore.
Hope someone has had or knows what the problem is.
Also anyone know where I can get a engine break down diagram.