Question about 2002 Mitsubishi Lancer

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Catalytic converter is in need of replacement. Cost is high any suggestions?

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Check and see if you can buy an aftermarket
it should be cheaper and have it installed,
that way you can avoid the dealership.


Posted on Jun 28, 2009


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Posted on Jan 02, 2017

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SOURCE: I have been told that my catalytic converters are

you can do it yourself it will only cost the price of the catalytic converters, first i would disconnect them and visually inspect them if you see that they look like a honey comb with no obstruction of the holes than they are fine but if you see black residue or even some melting of the material than i would replace them. hope this helps you.

Posted on Feb 01, 2010

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SOURCE: Coils need to be replaced and VW Touareg Catalytic Converter

Call around find out. Call at least 3 repair shops to get an estimate.

Posted on Mar 31, 2010

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Check engine light on engine miss replaced o2 sensors code 430 no exaust leaks flashed the system still missing wrench says maybe EGR valve at a cost of 400. installed but may not work ?????

You say you have a P0430 code ?
P0430 - Catalyst System Efficiency Below Threshold Bank 2

Read more:
You need a catalytic converter ,no EGR problem . Suggest you take your vehicle to a ASE certified repair shop . You had or have a misfire , this wrecked you catalytic converter !

Apr 15, 2016 | Cars & Trucks

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Missing then no power . Stopped exhaust glowing red .now want start but turns over

Your catalytic converter is bad ! misfiring cylinders sends raw fuel down exhaust to catalytic converter were it burns an melts the insides causing it to plug . Suggest you take your vehicle to repair shop ! A new Catalytic converter can cost up to $700.00 or more . Some states , New York , California have to have Carb. certified cats .

Apr 04, 2016 | Cars & Trucks

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Parts and labor catalytic converter 2011 Chevy equinox

There is a federal warranty of 5 years on all catalytic converters. It should not cost you anything to have it replaced. You stated that it was a 2007 and then a 2011, which year is it? If it is a 2007, you are almost outside of the federal warranty.

Mar 19, 2014 | 2007 Chevrolet Equinox LS New Cars

1 Answer

Replaced Catalytic Converter still runs red hot, Head gaskets recently replaced, Car overheats fast, idles hard

Red hot catalytic converter is telling you engine is getting too much fuel. With a recent head gasket replacement check the following items MAP sensor this needs engine manifold vacuum to detect engine load high vacuum low output voltage and low vacuum high output voltage. Coolant contaminated oxygen sensors white powder color on sensor replace. or check voltage with red exhaust they should be around 900mv if reading 200mv or less they can be grounded out. check for missing sensor return ground loose or not connected. faulty mass air flow sensor readings, Throttle position sensor invalid. a scanner can verify sensor readings and help pinpoint ROOT cause.

Nov 11, 2013 | 1999 Oldsmobile Alero

1 Answer

I failed emissions test. The HC and CO both failed. I was told by a family member that it sounds like the catalytic converter and I wanted to know how much that would cost or estimated cost to replace

Rich fuel mixture is leaking fuel injectors,failed oxygen sensors

Need clean air filter,new spark plugs

An Exhaust Converter is only good for 12 to 14 years max then
it has to go

This is a social web site we use as you do so prices are are over the internet less labor of coarse

Mar 02, 2013 | 1997 Mercury Cougar XR7

1 Answer

P 0420 code on toyota corolla2004

Hi there:
A code P0420 may mean that one or more of the following has happened:
  • Leaded fuel was used where unleaded was called for
  • A damaged or failed oxygen sensor (HO2S)
  • Downstream oxygen sensor (HO2S) wiring damaged or connected improperly
  • The engine coolant temperature sensor is not working properly
  • Damaged or leaking exhaust manifold / catalytic converter / muffler / exhaust pipe
  • ******** spark timing
  • The oxygen sensors in front and behind the converter are reporting too similar of readings
  • Leaking fuel injector or high fuel pressure
  • Cylinder misfire
  • Oil contamination

About the possible solutions, some suggested steps for troubleshooting include:
  • Check for exhaust leaks at the manifold, pipes, catalytic converter. Repair as required.
  • Use a scope to diagnose the oxygen sensor operation (Tip: The oxygen sensor in front of the catalytic converter normally has a fluctuating waveform. The waveform of the sensor behind the converter should be more steady).
  • Inspect the downstream heated oxygen sensor (HO2S), replace if necessary
  • Replace the catalytic converter
Overall probably the biggest mistake vehicles owners make when they have a P0420 code is to simply replace an oxygen sensor (H02S). It is important to do proper diagnosis so you're not wasting money replacing parts unnecessarily.
We strongly recommend that if you need to replace the catalytic converter that you replace it with an OEM unit. Second choice would be a high-quality replacement part. There are many stories in our forums where folks replaced the cat with a cheaper aftermarket one only to have the code return shortly thereafter.

Hope this helps.

Dec 08, 2012 | 2001 Toyota Corolla

1 Answer

Check engine light on 2004 Sedona. Codes reat catalytic converter, exhaust, etc. Car has only 65,000 miles on. Just passed inspection less than 24 hrs prior to light coming on. Can this be anything...

I would suggest checking with dealer as most KIAs have a 100,000 mile warranty and catalytic converter as part of the emissions equipment should be covered.

Sep 21, 2010 | 2004 Kia Sedona

1 Answer

My check engine light came on with P0422 and P0455 codes. Any suggestions as to the cause.

P0422 - Catalyst below threshold.

Catalytic converter is clogged or out of medium.

Replace it.


Fault Code Definition
Code P0422 indicates that the Bank 1 Main Catalytic Converter's emissions efficiency has fallen below the minimum allowable limit. This threshold is tracked by a Catalyst Monitoring Oxygen Sensor located on or near the outlet of the Catalytic Converter.


* Check Engine Light will illuminate
* In many cases, no abnormal symptoms may be noticed

Common Problems That Trigger the P0422 Code

* Defective Catalytic Converter
* Engine misfires have damaged the Catalytic Converter
* Internal engine damage resulting in high oil consumption and/or a leaking Head gasket has damaged the Catalytic Converter

Common Misdiagnoses

* Oxygen Sensors are replaced when the real problem is a damaged Catalyst
* Catalyst is replaced when the real problem is internal engine damage, which is producing elevated emissions levels
* Catalyst is replaced when a misfiring engine is the real problem

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Aug 04, 2010 | 2008 Saturn VUE

1 Answer

A mechanic told me that both catalytic converters on my 2002 Mercury Cougar needs replacing. One will cost $1000, the other is $900. Does this sound right?

that sounds very high to me... i put high flow performance cats from magnaflow on my cougar and they were $250 a piece... those are top of the line catalytic converters that are made for race style engines to gain more power but can be put on your car even if its fully stock.... i think your mechanic is a little pricy.. even with installation it shouldnt come even close to that much

Oct 29, 2009 | 2002 Mercury Cougar

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