Rough idling

SBCAND3

MEMBER
2003 FORD EXPEDITION
V8
4WD
AUTOMATIC
106,000 MILES

My Ford expedition 03 is rough idling the lower the case the more it shakes. Sometimes not always it will cut off after idling for awhile. I just had a tune up, a fuel system flush and my fuel filter changed. Oh and one of my vacuum hoses replaced. Still the same problem. I'm going back to the shop probably today. What do you think it is? And it feels like I'm hauling something when I'm trying to excellent to 60mph. Once I get there its good but still kin.D of feds like its pulling back.

Thursday, March 3rd, 2011 AT 2:13 PM

3 Replies

SBCAND3

MEMBER
3 POSTS

I meant excell, and feels like its pulling. I have this word prediction on that always changes my words to what it thinks. Sometimes not as helpful as others. Still not as big of a problem as my truck. Help please.

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Thursday, March 3rd, 2011 AT 2:21 PM

RASMATAZ

MECHANIC
75,992 POSTS

Could be caused by one of the following below

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Knock sensor
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

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Thursday, March 3rd, 2011 AT 7:17 PM

SBCAND3

MEMBER
3 POSTS

Today I took it and they told me to take it to a muffler place they think its my catalytic converter too. How much do you think that will cost for my truck?

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Thursday, March 3rd, 2011 AT 9:00 PM