Hi, i have just bought a 51 plate fiesta zetec 1.6. When driving it home it was fine at first but then when i got to a roundabout the revs wouldnt go down and stayed at about 2000rpm and at one point got stuck at 3000rpm. It is a nightmare to drive like this. My mate had a similar problem with his older R plate fiesta and it was the idle speed control valve but mine doesnt have one although it does have an idle air control valve. Does anyone have any ideas?