2003 Ford Expedition "cause idling" Questions

...of engine (cold) nothing warms up makes noise gets louder as time goes on Surging idle is usually caused by vacuum leaks.  Ford 5.4L engines are notorious for the PCV hose elbow leaking back ...

2000 ford expedition ,,rough idle in park..rough idle in drive,, sometimes dies..rpm's in drive at idle 400...replaced iac Check the fuel pressure at the rail assembly, there should be a min of 40 lbs

...be time for a tune up. it may have coil packs instead of spark plug wires which commonly go bad and cause a misfire at idle as ...

...You may have a defective idle speed control valve. Clean it first. Here is the most common cause of surges and stalls, it is the idle speed control air-bypass valve and throttle valve, they ...

my 2003 expedition with 4.6 at start up the idle goes up and down, and after it gets warm idle drops to about 750 rpms and every so often they go to 500rpms and come back up slowly. and ideas? The pcv

...1000-1200 rpm's and it will fluctuate up and down to around 500-600 rpm's, what could cause this? hi there re disconnect the battery wait ten seconds reconnect and then when you start ...

when the ac and or heater is on the expedition will not idle righ Do the procedure below to help clear up this problem, it is caused by a sludged up intake tract and idle speed control valve.

...it does then the surge may be due to "Cam Phasers". There is a recall on some models. This problem causes internal timing issues. If the engine does not show those symptoms you can get a free scan

idling problem. While its in park the RPM guage will pulsate up and down causing the engine to rev up and down between 600rpm to about 1200 rpm. I have had several people tell me its the o2 sensor and

...lean. swapped all 4 o2 sensors and MAF sensor. Idles rough and stalls well the o2 sensors will not cause it to run like that, all they eill cause is an excessive use of fuel. try to clean out the ...