Ford Fiesta revs high

[Billyward]

Anyone know why my car 1.25 fiesta ghia P reg, once engine is warm the revs are sticking at 1500, once driven past 50mph it is over revving and doesnt slow the car down once foot has been taken off the accelerator. The throttle has been checked and thats not sticking, Its using alot of fuel. The revs drop eventually once stopped but something is not right. Can anyone help?

[juliegatenby]

Hi,
Can be one of a few things. most common is the throttle body that needs cleaning. (this is where the throttle cable goes to and has a large butterfly valve inside)
it could be a problem with the ECU - easiest way to check this is down the back of the gear box where speedo cable goes in, you will see some wires coming out, approx 8 inch long that go to a plug. unplug this and take the car for a drive and see what happens. ( this is what tells the ECU how fast the car is going)
if this doesnt solve it please feel free to email me back.
if you are near Huddersfield I can lend you various parts to try to find out what the problem is.

[Billyward]

Thank you i shall try this i am taking it to a garage this week and i shall ask them to check the ECU. Unfortunately i don't live near Huddesfield, but thanks for the offer. I shall let you know how it goes.