Engine Performance problem
1997 Ford Escort 4 cyl Two Wheel Drive Manual 94000 miles

I have an escort 1997 1.4 LX petrol. i got it full serviced last month. i have a problem with high idle. when i cold start the engine would run at 1400 rpm and remains the same for some time. once it has warmed up it drops down to 1200 and remains there all the time. i tried chaging the air fliter and the new spark plugs but made no difference. it is consuming lot of fuel too. it gives aboyt 6miles/liter =>27 miles/gallon.

Try cleaning out the idle air control valve/motor and see what happens.

The AA came over and did check the valve and the idle controller and said that there was no problem with it....

Did they cleaned out the IACV -also you might want to test the throttle position sensor closed and WOT voltages