Question about 2003 Ford Expedition

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Catalytic converter replacement

The driver side catalytic converter on my 2003 ford expedition needs to be replaced

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  • yadayada
    yadayada May 11, 2010

    Do you have a Catalytic converter monitor trouble code? if so this may not mean the cat is bad, let me know

  • Rob Cobb
    Rob Cobb May 11, 2010

    Good day;

    Just want clarification on what you are asking? How to do this or what?


  • Anonymous Mar 15, 2014

    window motor is broke and needs replaced

  • Anonymous Mar 18, 2014

    how many catalytic converters are on a 2009 ford fusion?

  • Anonymous Mar 25, 2014

    what is the location of the catalytic converter on a 2001 ford windstar v6 engine

  • Anonymous Mar 25, 2014

    I had a problem with the oxygen sensors after replacing them and the catalytic converter took the car to the dealer an they said I had to replace the ECU Computer I replaced it whit a
    used computer but now it won't start



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Good day
please disregard my last post. The only thing that came up was " the driver side catalytic converter on my 2003 ford expedition" so I was trying to fine out what you were asking, then I came across this full one.


Posted on Sep 17, 2008


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I have 2007 Ford Expedition, I had replaced both catalytic converters twice. And it sounds like it's going out again. I'm burning gas twice as fast. Highway I'm getting 12 mpg.

Replacing your catalytic converter will not resolve your excess fuel consumption problem. Cats only assist in emissions, and excess fuel that gets to them, breaks them down. Therefore, you need to find out your fuel problem to no longer replace the cat.
Could have leaking fuel injectors, or bad valves which do not allow for a better and complete combustion. Bad sensors could also cause problems.
Start out by performing a complete and proper tune up. Then check to see if you have any codes in your ECM.

Nov 27, 2016 | 2007 Ford Expedition

1 Answer

Due to clogged catalytic converter someone drilled holes in it and now overdrive doesn't work , working on a 1999 ford expedition , how do I fix this , what all would stop overdrive from working ?

Catilytic converter was stopped up , drilled holes , now it's ...
Nov 19, 2015 - Catilytic converter was stopped up , drilled holes , now it's loud , runs better but overdrive doesn't work now - Cars & Trucks question. ... SOURCE: doesdrilling holes in a clogged catalytic converter help vehicle? ... Related Questions: ...Feb 20, 2014 ' 2002 Ford Expedition ... 11 people viewed this question ...

1999 ford expedition , 5.4 v8 , stopped up catalytic converter ...
Nov 19, 2015 - 1999 ford expedition , 5.4 v8 , stopped up catalytic converter , drilled holes ... up catalytic converter , drilled holes , now it's loud and overdrive doesn't work now ... When catalytic converters go bad, the porcelain matrix inside comes loose and is noisy. ... Related Questions: ... 11 people viewed this question ...

comments on How to check your vehicle's catalytic converter.
Wouldn't you want to plug the holes you drilled afterwards? .... I believe that the dealer is actually the one that doesn't know things that happen to your car. ... There are some who work at the dealership and are car fanatics who mess with their cars. ..... replaced battery, now someone told me sounds like a plugged convertor, ...

1998 Ford F150 4.6L with clogged cat - YouTube

Dec 02, 2015 | Ford Cars & Trucks

1 Answer

What does it mean to have a code po 430 on a 2003 ford expedition

My code book says"Catalyst Efficiency Below Threshold(Bank 2).This means the computer sees that the readings between the O2 sensor before and after the catalytic converter show that the converter isn't cleaning the exhaust enough.This could be the sensors or the converter.I'm leaning toward the converter,but this only a guess.(O2 sensors can become sluggish and not read accurately,but the computer would most likely set a code for one of the sensors as well).

Sep 07, 2012 | 2003 Ford Expedition

1 Answer

California illegal catalytic converter ford expedition 2003

Because the cat that is approved for California is "finer tuned" than the other 49 states. California emission standards are the toughest in the country, so many engine and emission parts are made just for those standards.

Aug 15, 2012 | 2003 Ford Expedition

1 Answer

My 2002 ford expedition is having problems accelerating over 30 mph! It acts likes it wont go any faster when i push gas pedal to the floor! we changed the plugs already and im thinking the catalytic...

it sounds like a catalytic converter... take it to a repair station an have a back pressure test done on the exhaust system in front of the converter..if it is more that 3psi u have a restriction in the exhaust system

Jul 17, 2011 | 2003 Ford Expedition

1 Answer

Were is located the oxigen sensor in expedition 1999

They are located in the exhaust pipes under the car. There will be two before the catalytic converter and one after the catalytic converter. the two before the cat are usually located closer to the exhaust manifold. The one after the catalytic converter will be right behind it.

Which one do you need to replace?

Oct 05, 2010 | Ford Expedition Cars & Trucks

1 Answer

I locate oxygen sensor on my ford expedition

for 1998 Ford Truck Expedition 4WD 5.4L EFI 8cyl the Oxygen Sensor is located under vehicle, driver side, below seating area, mounted in exhaust pipe in rear of catalytic converter.

Application: Number three

Hope helps (remember rated this).

Aug 09, 2010 | 1998 Ford Expedition

1 Answer

Ticking from catalytic

The wrap that place around catalytic brick may be deterated ,causing the noise

Apr 27, 2009 | 2003 Ford Expedition

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