Idles rough and shuts off

Tiny
WALTG0110
  • MEMBER
  • 2002 FORD ESCAPE
  • 3.0L
  • V6
  • 4WD
  • AUTOMATIC
  • 204,736 MILES
When I start my car it idles kind of rough. While idling my car will shut off unless I press on the gas. While driving if I am stopping or take my foot off the gas my car will turn off. I have replaced my EGR valve my spark plugs and my alternator and my battery as well.
Saturday, September 28th, 2019 AT 8:59 AM

3 Replies

Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,005 POSTS
Okay WALTG0110

This may not be the answer, but you can easily rule it out! This will sorta guide you to what you have to do, it is really easy to do!

We're talking like this device on the top of the engine has 2 bolts and a connector.

My wife's Escape would idle low, then it got to point it would die when you stopped. Revving + holding brake was only way to keep it running.

So we took it to fellow R/C airplane pilot, he also doubles as a S.C. State HWY DEPT mechanic.

When I got to his house, he was repairing a tractor. Told him my sob story. Escape was still barely running, I raised the hood.

He said, (and I quote)."It could be the Idle Air Control (IAC)", as he pointed to it, and emphasized it with a sharp rap using the wrench in his hand that he was using on the tractor.

By golly it straightened right up, and ran darn good.

That was a 15/16 Craftsman wrench, box end, kinda a medium rap. LOL!

Anyway we removed and cleaned it, it may have gone on being Fine, for a lot longer. Since it was my wife's, I took no chances, with my Well-Being.

Yes, I visited a parts store the next day and replaced it, figured it had 100,000 miles on it, and constantly was a moving part, replacement of this component, was just preventative maintenance in my eyes.

Hope this helps. Hope I am spot on! Cleaning it might be almost free, I'd use "throttle body cleaner" inside the removed IAC and this might at least eliminate this factor out of the equation. Heck, it might get by for a long time before you need a new one.

You can go on with your old one (if it's working well now) and replace it later, if you have the same feelings about it as I did.

A few pictures of the wife's below, yours is very similar.

Please let us know how this goes.

Xiac

The Medic
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Saturday, September 28th, 2019 AT 8:03 PM
Tiny
WALTG0110
  • MEMBER
  • 2 POSTS
Not really seeing anything wrong with the IAC.
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Monday, September 30th, 2019 AT 4:27 PM
Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,005 POSTS
In your picture, looks like carbon on the shaft inside.

Maybe this is before you cleaned it?

That shaft is supposed to move back and forth regulating air flow by the throttle plate to maintain idle (controlled by the computer).

Is the shaft moving freely?

The Medic
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Monday, September 30th, 2019 AT 5:35 PM

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