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catalytic converters

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Symptoms of a Bad or Failing Catalytic Converter
Common signs include reduced engine performance, rattling sounds, and the Check Engine Light turning on.
How Long Does a Catalytic Converter Last?
The catalytic converter converts pollutants in the exhaust system into less toxic pollutants by using a redox reduction method. The catalytic converter is located on the exhaust system of your vehicle, and...
How Exhaust Systems Work
It all starts in the engine In order to understand how the exhaust of a vehicle works, there must be a basic understanding of the engine as a whole. The internal combustion engine in...
How to Install a Catalytic Converter
A catalytic converter is one of the most important emissions components of the modern gasoline engine. It is part of the vehicle’s exhaust system, and is responsible for keeping...
What Does the Catalytic Converter Warning Light Mean?
The catalytic converter warning light means the catalytic converter in your engine may not be working properly, possibly due to overheating.
What Does a Catalytic Converter Do?
The modern automotive exhaust system is much more advanced than what was available even just a couple of decades ago. After recognizing that the average automobile was one of the primary sources of global...

Related questions

Question
Are fuel injector banks and catalyst converters considered different issues and warranties?
Question sent to CS for warranty information regarding fuel injectors and catalytic converters for a Chevrolet 2010 V6-3.6L.
Question
Idles great, but won't accelerate
This may be caused by any number of things, but may be most commonly associated with a clogged catalytic converter. As you may already know, the catalytic converter converts toxic exhaust gases into less harmful pollutants that are suitable to...
Question
My bank 2 cat converter showed when they put my car on the computer no other codes so i was trying to see exactly what does it ope
Hello, thank you for writing in. It is difficult to say what the exact issue is and how it relates to the vehicle without knowing what code was set by the computer. Typically a bank 2 catalytic converter code is...
Question
How do you know if catalytic converter is bad
To begin with, 170 thousand miles is just about the right time for the catalyst on a civic to start acting up. Your car is equipped with two oxygen sensors to monitor the catalytic converter function. The reaction that takes...
Question
My catalytic converter was replaced and everything seems fine. However the engine seems incredibly loud and this occurred on the highway.
Hi there. There is an exhaust leak under the vehicle. Check the catalytic converter, muffler, and all the clamps under the vehicle on the exhaust pipe and see if anything came loose. Hook up any parts that are disconnected on...
Question
Catalytic converter issue?
Hello! It sounds like you may have a clogged catalytic converter or potentially a faulty Oxygen sensor. The catalytic converter converts toxic exhaust gases into less harmful pollutants that are suitable to be expelled into the atmosphere. When this is...
Question
Low rpm idle at 1 to 1.5k, can not get rpms over 3k
It sounds like you may have a couple of issues going on here. Your idle should generally be around 800 RPM's when the engine is warm and not at a high idle during warm up (in which case it may...
Question
My vehicle hesitates while im driving..
It sounds like you may have a clogged catalytic converter that is not allowing the vehicle exhaust to breathe correctly. The catalytic converter converts toxic exhaust gases into less harmful pollutants that are suitable to be expelled into the atmosphere....
Question
My car doesn't pass emissions because the catalyst system is below threshold, and the exhaust gas recirculalation is insufficient.
Hi there. The Engine Gas Recirculation (EGR) valve could be sticking or full of deposits from the exhaust system. Remove and clean the EGR valve before replacing it to see if the system will begin to operate. The oxygen sensors...
Question
Struggling to go uphill and muffler sounds get louder and strong smell of gas fumes.
It sounds like you may have a clogged catalytic converter. The catalytic converter converts toxic exhaust gases into less harmful pollutants that are suitable to be expelled into the atmosphere. When this is clogged, this causes these gases to be...
Question
Sputtering and popping with a loss of power. Most recently died and after driving cat converter was cherry red hot.
Hi there. There could be an issue with the spark plugs not firing causing excessive amounts of hydro carbons (raw fuel) to go into the exhaust system. When excessive fuel goes into the exhaust system, the catalytic converter will glow...
Question
Catalytic Converter 2004 Nissan Xterra
Hello - there are 4 catalytic converters for your vehicle with the V6 engine. There is one that is part of each exhaust manifold (that's 2), and one for each exhaust pipe just below the exhaust manifold (2 more). Space...
Question
CE Light came on , got it checked and it said PO420. Couple of day later went off and has not come back on. 2011 Jeep Compass
Hi there - yes, it is possible the catalytic converter has lost it's ability to burn residual fuel. This could be due to an engine condition that has clogged the catalyst, or a failing oxygen sensor that is not adequately...
Question
What does this code mean P0420 ? 1997 Chevy Express 1500
Hello - the P0420 code means the catalytic converter has lost it's ability to burn residual fuel. This could be due to an engine condition that has clogged the catalyst, or a failing oxygen sensor that is not adequately monitoring...
Question
My check engine light came on and my car was diagnosed as needing a catalytic converter. Now, my car won't start.
Hello, thank you for writing in. The catalytic converter can cause a vehicle not to start. This would be an extreme situation where part of the catalyst inside has broken off and is clogging the entire exhaust pipe. Tap on...
Question
My car failed inspection with P0420 and P0411 codes 2005 VW Jetta
Hi there - the P0420 indicates a catalytic converter that is not working as efficiently as it should. This could mean a clogged converter, or weak oxygen sensor (probably the pre-converter O2 sensor). The P0411 code indicates a secondary air...
Question
Shaking when braking and clanking/banging noise coming from what seems to be the exhaust.
Hello, thank you for writing in. The vehicle is likely facing two different issues. While it is possible you are feeling a rough idle in the steering wheel, you may be facing a worn or dirty brake. The extra strain...
Question
I have a 2003 toyota camry with "check engine" light on. I was told by one mechanic at Goodyear that it is due to catalytic conve
I think what the mechanic was telling you is that there are two different ways to replace a catalytic converter. The first way is to have factory type parts installed, that will normally come with the converter, and the adjoining...
Question
My engine is about to kill itself.
If the vehicle transmission has entered limp mode and the engine is really misfiring, these faults have to be diagnosed separately. The engine misfiring should be dealt with first. Typically, the engine is scoped to look at secondary firing patterns...
Question
Code P0420. Need to replace catalytic converter.
Hi there. The code P0420 is coming up for the Downstream Oxygen sensor has picked up an abnormal reading and is saying that the catalytic converter is below threshold. There could be a misfire on the engine, leaking injector, ignition...

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