Question about 2005 Ford Focus

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How to replace the cat converter on ls focus?

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You should not have a converter failure, until it is at least 12 years old or more

What are the issues,they have to be corrected first,before any new converter goes on.

You won't like the price of the converter and it is welded on ,most likely

Posted on Oct 11, 2010

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Location of 02 oxygen sensor on 00 Linc ls v8 need replacing


O2 sensors are after the cat converter and if you have 2 cat converters they will be after each converter
have you had the fault codes read to get that code or are you guessing that that is the problem
mostly with O2 sensors a wash and scrub in vinegar will get them working again but the HO2S sensors ( heated sensors ) in front of the cat converters give the most problems from the current in the wires or other circuitry faults
run the fault codes and save money

Oct 22, 2015 | Cars & Trucks

1 Answer

99 I LS 400 replace front converter right side still glowing red hot lack power


the cat glows, for these reasons
engine bank 2 is very rich and you have lots of air (oxygen)
present, when the right bank misfires that too blows. oxgen to the cat and it glows red hot.
fix the EFI fuel trim on bank 2,
use a scan tool to check trim, and do the diagnosis.

Jul 12, 2014 | Cars & Trucks

1 Answer

2004 lincoln ls codes


p0300 is a random engine misfire and p0420 is catalytic converter efficieny below threshhold bank1. one easily causes the other. only way to be sure you get it fixed would be a tune up, new cat converter and o2 sensors

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2 Answers

Ford focus struggle and will not accelerate


check tune up and or fuel pressure. May be misfire or plugged fuel filter, dirty air filter.

Nov 16, 2010 | 2000 Ford Focus

1 Answer

I have a 1996 lexus 400 LS. My check engine light came on .thay said it my p 0420. can you help me.


P0420 is "catalyst system below efficiency". It means that the car thinks a catalytic converter is bad. It could be that the cat is failing, but it also may be that the secondary oxygen sensor (behind the cat, used as a comparator to determine the health of the cat) is failing. As that part is about 10% of the cost of a new catalyst, I'd replace it first, have the code cleared, and see if it comes back.

Dec 09, 2009 | 1996 Lexus LS 400

1 Answer

HOW DO YOU REPLACE O2 SENSORS ON LINCOLN LS 03 3.0. THE ODB2 READING CAME BACK WITH P0430 P0420. DOES THIS JOB REQUIRE A MECHANIC OR IS IT EASILY REPLACED?


Those codes represent bad or inert catalytic converters. Putting in new o2 sensors only costs you money. If the car has less than 80,000 miles then, your nearest Lincoln dealer has to put on new ones per federal mandate. 8 years or 80,000 miles, pcm and cats are covered.

Nov 09, 2009 | 2003 Lincoln LS

2 Answers

THE PO113 IAT SENSOR SHOWED ON MY 2002 LINCOLN LS WHEN I WAS GETTING IT CHECK. CHECK ENGINE LIGHT WAS ON AND CAR DOESNT MAINTAIN FULL POWER. CAN YOU TELL ME WHAT PROBLEM IS


I can try to help. The chk engine light is generally tripped by the #2 02 sensor. The one after the cat converter. It 's purpose is to monitor the efficiecy of the cat converter. You state there is a power loss problem also. This loss of power is common when the cat converter is restricted and the exhaust can't escape as fast as needed. . You can tell the converter is bad by a sulphur smell in the exhaust, a wheezing at the tail pipe, Or, the exhaust does not immediately stop when theengine is turned off. Good Luck. Have the cat conv checked and replaced . I hope yhis is the help you needed, Ned

Nov 05, 2009 | 2000 Lincoln LS

1 Answer

I went to the dealer and asked if i could have a copy of the diagnostic they ran. They did not give me one but wrote fault code P0420 on a piece of paper, like i know what that is. He said i would have to...


I looked up the code p0420,------- the catalyst system efficiency below threshold (cylinder bank #1).Try changing the oxygen sensor, the one by the cat converter first. Yes it is true, the cat and the manifold is all one unit, but try the sensor first,it's cheaper.

Mar 12, 2009 | 2005 Ford Focus

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