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My 1999 ford expedition dies when idleing - Cars & Trucks

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Listen for a loud hissing type noise when the engine is idling. Find the source of the noise. A common problem is a vacuum leak that is caused by the PCV hose rubber fittings collapsing. They look like formed rubber hose connectors similar to the ends of a spark plug wire.

Posted on Apr 21, 2013

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Posted on Jan 02, 2017

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SOURCE: My 1999 ford expedition won't start

check your ignition module,most of the time its on the side of your distributor

Posted on Aug 29, 2009

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SOURCE: 1999 ford expedition rough idle allready replaced

First, go to Autozone or Oreillys for a free scan. Then get a gasket for the airhorn to intake manifold. You need to undo the 8 bolts for the airhorn, remove the base gasket and clean any passages underneath.

When the intake manifold is dirty in that area you will get false EGR flow errors. Once clean it should idle better.

Posted on Dec 04, 2009

Testimonial: "thank you i have done everything but that"

BCAS1298
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SOURCE: Everytime I stop and try

On top on the engine, all the way to the back, and down a little, there some vacuum connection, one has an elbow that always leak's, start engine and feel back there, 9 out of ten time's that's the problem, that will also set an engine light on for lean.

Posted on Aug 09, 2010

Testimonial: "Thank you so much. That was exactly the problem.. I never would have found it on my own."

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SOURCE: 2000 ford expedition ,,rough idle in park..rough

Check the fuel pressure at the rail assembly, there should be a min of 40 lbs at the rails. Do you have any loss of power under a load? You may have an issue with your o2 sensor that is causing the ecm to send an improper signal to the engine ign/fuel map.

Posted on Dec 07, 2010

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SOURCE: The 4WD will not disengage on my 1999 ford expedition

hey well i have similar problem on my 2000 awd, it seems to get stuck on 4 all the time. when i turn it grinds and thumps like heck. anybody knows how to go about this prob?

Posted on Dec 29, 2010

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Inhave a 1999 ford expedition it cranks like a dream but when put in gear it sputters and dies recranks great the sputters and dies in gear


You have a transmission problem. Tcc(torque converter clutch) solenoid stuck. Basically when you put it in drive, it is starting out in overdrive. Causing the engine to die.

Oct 20, 2014 | 1999 Ford Expedition

1 Answer

My 1999 Ford expedition runs when I pour gas into fuel injection but dies after


This sounds like a bad fuel pump , this is very common. you will need to drop gas tank to install new pump.

Oct 05, 2012 | 1999 Ford Expedition

1 Answer

My 1999 ford expedition idles rough when I turn on the air conditioner


the rpms drop because you are adding more of a load to it. it should level out after a few seconds.

May 04, 2017 | 1999 Ford Expedition

1 Answer

My 1999 Ford Expedition stalls at idle when placed into gear


Usually a sign of a dirty throttle body or a faulty idle air control valve.
If it dies like the transmission is engaged, the torque converter could be locked up.

Jul 10, 2012 | Ford Expedition Cars & Trucks

1 Answer

1999 ford expedition 5.8 trition motor idles to low, was run fine now wont idle.


you can idle it up by adjusting the idle screw on the carby

Oct 20, 2010 | 1999 Ford Expedition

1 Answer

99 expedition running lean and dying when at idle


Sounds like a vacuum leak. Look for obvious vacuum hoses broken,squished or off. Check at egr valve, dpfe sensor & solenoid. These are all common to go bad. If not obvious take carb cleaner with snorkel attached, spray intake manifold & hoses etc. If idle raises while spraying you located vacuum leak. The propelent in the can temporarily seals leak while its being sprayed. Be careful not to spray on wires or anywhere there is a spark.

Jun 14, 2010 | 1999 Ford Expedition

1 Answer

2004 Ford Expedition sluggish idle


these vehicles do have problem with Idle Air Control Valve, this component is controling your idle speed. it's very easy to replace.
it's located on the throttle body


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Mar 29, 2010 | 2004 Ford F150

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