07 focus won't idle down

My daughter has a 2007 Focus; she lives 300 miles from me. In the last two days the car is starting to idle fast like 2500 and up to 3500. It will do this at start up and also not idle down when she comes to a stop. Does this car have a throttle return spring, or could it be sticky throttle butterfly? Or could it be something else, anyone has any suggestions.
Thanks for any help or suggestions on this.

 

back in time when i had 1987 ford taurus, that sob will accelerate by itself. what was wrong with it was faulty idle speed control unit, that being a simple solenoid, operated by computer.

for 2007, my wild guess is it's either drive by wire, with throttle being operated completely by computer, without direct link to the gas pedal, or another similar device like i had on mine, that controls pintle valve. it's fuel injected engine, so no, there is no g'ol spring like it was on carburetors.

i'd seriously suggest to start with
1. stop driving that car, or it may do what mine did
2. carefully get it to the nearest parts store and have them read error codes. at least, it's a starting point.
otherwise, i'd have located idle speed control and unplug it, and then, consecutively, any plugs that are connected to the throttle body. ford being ford....

also, check air hose and and sensors on it. maf or map sensor can do weird stuff to rpms. or as simple as loose hose itself.

 

Since it's a 2007, It may still be covered under the Emissions warranty.. If the coolant is full so the temp sensor can see the engine temp & there are no Vacuum hoses loose ,, Try your local Ford dealer,, You never know, It may have computer updates, other recalls, service bullitens or warranty to fix this problem... Check your manual for emissions coverage,, Used to be 5/50,000 but not sure any more,, Good Luck,, Roger

 

Does it idle down after it warms up?
Could be any number of things.
Ford knows about the problem but hasn’t released a TSB since 2004.
I’ve used that TSB to resolve your high idle issue a few times.
Doesn't matter that TSB is for 2004 and your car is a 2007.
Let’s hold off on the TSB for now.

Clean the throttle body and throttle plate with carburetor cleaner.
Don’t waste your money with “Seafoam” or any other cleaners.
All additives are “BS” and a waste of time and money.
Clean the MAF and IAC with “CRC MAF CLEANER” ONLY!!!
Be sure to follow the instructions on the “CRC” can exactly.

Scan for computer error codes and post any codes so we can see them. A scan is free at Auto Zone, Advance Auto Parts, and O’Reily Auto Parts.

 

Thanks for the suggestions guys, Am leaning towards replacing or cleaning or lubeing the idle positioning sensor. A friend gave me one he knows is good.

 

i have to disagree about the seafoam.
you need to introduce it through a vacuum line and will notice the carbon being burned off.

i did it on my taurus and would rev it to 2,500 rpm then let down and repeat.

 

(Quote) i have to disagree about the seafoam.

Fine to disagree
GOD BLESS AMERICA
preserving the right of
free speech is just one
of the countless reasons
I enlisted in the MARINES
and volunteered for
Korea and Nam

Note that disagreeing doesn’t mean you’re right, or make me wrong.

It’s your money
you work for it
and earn it and
I have no right to tell
you how to waste it.
All we can do here
is agree to disagree.

(Quote) you need to introduce it through a vacuum line

Yes, but not just any vacuum line. Use either the PCV or MAP sensor vacuum.

(Quote) and will notice the carbon being burned off.

No sir you won’t. If you’re referring to the thick white smoke coming out of the exhaust that is not carbon being burned off. That is simply the Seafoam (your wasted money) that has entered the cylinders, and is now being burned off.

 

ase can we please keep to facts. i've cleaned up your post.
I'm not talking white smoke. It is a blackish smoke.

 

(Quote) ase can we please keep to facts. i've cleaned up your post. I'm not talking white smoke. It is a blackish smoke.

Ok and thank you!

Since you’re referring to the blackish smoke coming out of the exhaust that is not carbon being burned off. That is simply the Seafoam (your wasted money) that has entered the cylinders, and is now being burned off.

Care to take a stab at the color of burning carbon?

 

Knock it off...... everyone
Seafoam has many supporters. Maybe it works...maybe it doesn't...not trying to say.

Opinions are like...what? That's right....

Keep it civil....or there will be vacations for all....