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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...
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...
P0420 OBD-II Trouble Code: Catalyst System Efficiency Below Threshold (Bank 1)
P0420 code means that either the upstream or downstream oxygen sensor in the catalytic converter is not working. Replacing these parts can fix P0420.
P2217 OBD-II Trouble Code: NOx sensor Circ Interm Input Bank2
P2217 code definition The P2217 code has found that the nitric oxide and nitrogen dioxide sensor circuit voltage is not within the manufacturers specification for input Bank2. What the P2217 code...
P2209 OBD-II Trouble Code: NOx Sensor Heater Sense Circ Range/Perf Bank 1
P2209 trouble code definition The P2209 OBD-II trouble code registers when the Powertrain Control Module (PCM) detects an abnormal reading in the NOx (nitric oxide and nitrogen dioxide) sensor for the...
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
catalytic converter going bad does it need to be replaced?
The catalyst should be replaced as soon as possible if it is bad. The backpressure on the engine will cause the engine to run with less power and may overheat the engine valves resulting in engine damage. the catalyst can...
Question
Is $2300 too much to pay to replace 2 cat converters for a 2007 Pathfinder?
Hello, thank you for writing in. Your particular make and model does utilize a catalytic converter on both sides of the engine. Catalytic converters are going to vary in price depending on the brand of replacement parts that you are...
Question
My check engine light is on , mechanic said it is catalyst converter however the car run perfectly fine , no misfire or more
The impact on engine operation (and fuel efficiency) of a "failed" catalytic converter depends on exactly what the failure mode was. In one scenario, if the catalyst within the converter is simply "poisoned" and thus there is no longer any...
Question
what other issues can occur if a misfire troubleshooting problem is not fixed soon enough?
Unfortunately, it is possible to damage the catalytic converter, that is cause a blockage, if the engine misfires "too much" and/or for a prolonged period. It is not yet known whether your converter is damaged, but I will get to...
Question
Do I need to change the exhaust manifold when changing the Catalytic converter? Your quote is 500 cheaper without it. Do I really
Hello, thank you for writing in. Typically the catalytic converter does not require that you replace the exhaust manifold. The exhaust manifold refers to the manifold of tubes that connect from each piston, and bring the exhaust together to the...
Question
My 02 lesabre has a sulfur egg smell what is it it's making me sick
The engine should be checked first to make sure it is not running too rich. If not running rich then the exhaust catalyst (catalytic converters) are bad and need to be replaced.
Question
I have a 1998 Caddy DeVille, has original muffler and catalytic converter. had to be tweaked to pass CA smog, replace both?
Hey Pete, thanks for writing in. The replacements have more to do with what is actually wrong with the vehicle. If they have been modified illegally, then the answer is an automatic yes. Not only does it cause issues with...
Question
Paid $2900 for replacing 6 engine coils, replacing spark plugs & brake work. Cat converter now issue 2009 Buick Enclave
Hi there. The fact that the vehicle needed this work in the first place is what would have caused the converter to fail. When a cylinder misfires from bad plugs or coils then the excessive fuel will ruin a converter....
Question
How many catalytic converters does the 2012 hyundia elantra gls 1.8 have?
Your engine should only have one in the system.
Question
Should I straight pipe because my cat is broken
I'm sorry to say, you're just going to have to bite the bullet and get new catalysts. The same thing happened to my own car just a few months back. That's usually what happens at about the mileage you have...
Question
does a 2004 nissan quest really have two catalytic converters? I want to be sure someone isn't taking advantage of a friend
This vehicle has two convertors. One for each side of engine. The catalyst can cause a stall and loss of power if it is clogged or broken up inside. The replacement is not that hard but may need to be...
Question
will a bad catalyst cause my truck to not want to stay on?
If the catalytic converters are broken apart inside the exhaust you will get a rattle in most cases and the loose substrate inside can partly or completely block the exhaust flow and cause loss of power and stalling or no...
Question
My catalytic converter is gutted, with no engine lights on. Is this bad for performance?
Hello, thank you for writing in. The catalytic converter is there to remove certain emissions like CO and NOx before your exhaust is pumped into the environment. While this is the practical and "environmentally responsible" thing to do, your vehicle...
Question
Recently replaced engine due to water damage. Now car shakes at idle and check engine light flashes.
If your catalyst is bad then I would suggest replacing it first and then clear codes and see how engine runs afterwards and if it needs further diagnosis.
Question
"no check engine light" missfire changed fuel filter spark plugs and air filter car wont accelerate past 20 mph even with foot to
You should have the computer scanned to see if there are stored codes. If no codes then check the air filter is not plugged and air filter housing is not blocked from getting fresh air in to it. You will...
Question
Car stalls and sputters while in idle
Claimed by Kevin Gainer
Question
1999 Toyota camry le gets really loud when accelerating but muffler new
Hello. You are correct. The most likely cause is going to be a faulty gasket. Look at any joining sections of pipe from the exhaust manifold back. It is often hard to check certain parts, and that is where exhaust...
Question
What cause a catilac converter in 2009 nessain murnao go bad
There can be a few different reasons for a catalytic converter to fail. Your engine running too rich or lean or coolant in exhaust from a blown head gasket can cause failure. Also a defective converter that breaks apart and...
Question
My car is sputtering and when I drive it’s louder and then it was and more shaky. And when I go to speed up it has a hard time.
If the vehicle has less power and does not run correct and seems louder than it should can be caused by the air filter clogged or the catalyst is clogged. It can even be loss of fuel pressure and clogged...

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