High revs once engine warm

2004 Ford Focus 1.6 petrol zetec 2003 model manual
Car: Ford Focus
Year: 2004
Variant: 1.6 petrol zetec 2003 model manual
Categories: Running Rough, Starting & Power Loss
Hello. I bought car 2 weeks ago 132400 miles on clock.Starts ok. Problem starts once engine warmed up.Normal idle 1100.When i stop then rev shoots up to 3000 ,coming down slowly say takes 15 seconds.On motorway when changing gears,it doesnt go down but upwards.even at higher speed if i do neutral ,revs go up 15 seconds later comes at 1100.I dont know when plugs were changed,what oil is inside.Looks clean oil.Do u suspect vaccume leaks.Has this model got EGR VALVE ? PLz reply ASAP. Regards nd nice holiday.
Problem added: Apr 3, 2015 (8 years ago)
Could be a number of things so best advice is get your garage to scan it.
though the EGR is an unlikely suspect,
usually a fault is these makes for uneven idle speed/low/or stalling from idle.
Answered Apr 4, 2015 (8 years ago)
Check underneath the inlet manifold as they have a hose connected which tends to collapse and cause an air leak you should hear it also there is a little blanking piece on the manifold that can break off as well idle control valves have been known to stick as well
Answered Apr 5, 2015 (8 years ago)

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