How To Fix A Bad Catalytic Converter

The temperature is different on one side of the exhaust. When It's Time for a Change, Look AutoZone's Way It is important to be aware that catalytic converter troubles could be symptomatic of other complications within the vehicle. The catalytic converter is an emissions related component that is mounted in the exhaust pipe. I have 1998 Ford F-150 XLT and the Catalytic Converter has a small hole in it. Smoke comes out and makes loud, weird noises. I suspect a bad catalytic converter, but cats are expensive. Without a properly functioning catalytic converter, you are not only going to fail your emissions test, but you are also causing more pollution. The issue could simply be that the sensors are faulty, and that will give the same code as if the catalytic converter was bad. You could have a bad catalytic converter!. How much is the average price to change this. But now what makes a catalytic converter go bad your wondering? What are some of the things that cause a catalytic converter to go bad? Wondering how to keep your catalytic converters healthy? The catalytic converter expert Last Chance Auto Repair has you covered Plainfield, Naperville, Bolingbrook, Romeoville, Chicagoland Illinois. Your car's exhaust system (below) comprises: a catalytic converter (s), at least two oxygen sensors and exhaust pipes that route the engine's exhaust from the engine, through the catalytic converter, and out the car. Oftentimes, the main source of the problem is a bad ignition system or a poorly functioning engine. To check if it's a clogged cat versus a bad oxygen sensor (when you don't have a check engine light), grab a vacuum gauge. Before you send your car to the shop or decide to replace a potentially good converter, the following series of tests will help you troubleshoot the unit using some special but inexpensive tools. If your converter has a carbon buildup or mild oil fouling, Stop the Rattles. Do I have a bad cat? Should I visit a dealer for warranty on the converter?. I own a 2006 Sedona EX with 85,000 miles and have always had the suggested maintenence performed at a Kia dealership. Your Check Engine light is on and you find a P0420 low catalyst efficiency code for your Catalytic Converter. Although there is probably something wrong with your catalytic converter, you may be able to get it back to normal without having it replaced. Connect the gauge to an intake manifold vacuum line. » LEARN MORE: Get an estimate for a new catalytic converter. But recently, the car is giving poor mileage. In typical converters, the catalyst can be a precious metal such as platinum,. The catalytic converter, or "cat" for short, is a component of the exhaust system that converts harmful pollutants into less harmful emissions. Welcome to NICO. Catalytic converters are very known to fail in a lot of cars and are often very expensive also if you are looking for a brand new. This video will show you the basic concept of using an OBD-II scanner to diagnose an inefficient/bad catalytic converter. The cost of a Catalytic Converter Replacement depends on the type of car you drive. It turns out that the insides of the catalytic converter were in good condition still. That is a sign of a possible bad catalytic converter. It is a good idea to use another means to achieve the benefits you are looking for by removing this item. Also, if NOx sensor’s ‘head’ is aged, the sensor can stay in ‘Not Ready’ mode for a while, no errors are stored in MSD80 memory, but Desulphation sessions are disturbed. A clogged catalytic converter can cause poor gas mileage and lower engine-performance levels in your car. Like any car repair, the cost of catalytic converter replacement varies from model to model. Below is a link to three videos here on how to easily repair the clock. Toyota Camry 1997-2001: How to Replace Catalytic Converter. In this article we are going to talk about the part of the automatic transmission called the torque converter. Past smog test results. When a catalytic converter begins to fail, its monolith substrate filling cracks, Gut it. Catalytic converters can overheat because of excessive amounts of unburned gas caused by a misfiring spark plug or a leaky exhaust valve. Whether it's clogged with fuel additives or overheating from bad exhaust valves, a malfunctioning cat can cause all kinds of problems. Toyota Camry 1997-2001: How to Replace Catalytic Converter. The service consultant explained that "over time, with age, contaminants build up in the converter and the expensive catalyst breaks down…converter heats up, turns red…if converter is not replaced, it can damage the engine. The catalytic converter runs at extremely hot temperatures and is designed to trap and incinerate some of the worst elements of exhaust emissions. Best Answer: Nathan is partially right, raw fuel being dumped into the catalytic converter will cause it to ignite or burn inside of the catalytic converter causing it to glow red. This misfiring can cause the catalytic converter to overheat as well. The tech will begin with a physical inspection and check to see if the catalyst material has broken apart. This stated that my right and left catalytic converters and all associated O2 sensors are bad. Catalytic converters are very known to fail in a lot of cars and are often very expensive also if you are looking for a brand new. A catalytic converter is a part of a car's engine that removes poisonous carbon from the engine's emissions. Your catalytic converter is a vital part of your car's emissions control system. #1 – Rotten Egg Smell From Exhaust. Ways to Fix a Catalytic Converter Clean it. There are cheaper 'universal' ones but they have a less-than-stellar track record of passing emissions tests. for a Volvo catalytic converter is outrageous. In addition, a failed oxygen sensor can cause overheating. Bad Catalytic Converter. One of the main elements in reducing emissions in a converter is the catalyst. No additive can repair a failed catalytic converter, but they can clean deposits from a functioning converter and help restore its efficiency. This could save you hundreds or thousands of dollars. There may be something wrong with your catalytic converter when your car starts to feel sluggish and your gas mileage becomes poor. com names replacing a catalytic converter as the third most common car repair related to a "check engine" warning light, and estimates the average cost for parts and labor at $1,029. The 3 harmful substances are: Nitrogen oxide, which is produced when nitrogen combines with oxygen under the effect of heat in the engine. Catalytic converters have been around for a long time. You may have known that the catalytic converter is an integral part of the exhaust system, processing all exhaust leaving the engine before it leaves into the atmosphere. 0l catalytic converter 2005. Overheating is another common problem with catalytic converters. Now That You Have Some Background, Get to a Mechanic. For this reason, we highly recommend a diagnosis prior to performing any replacements. It's usually good for the life of a vehicle, but occasionally it does fail. To determine if your catalytic converter has failed, a professional technician is needed. The most important thing is your safety. The following article contains some bad catalytic converter symptoms so that you can keep an eye out for any warning signs and invest in a new one as soon as possible. Replacing your catalytic converter is costly, so, knowing if a new catalytic converter is needed pays off. Toyota Camry 1997-2001: How to Replace Catalytic Converter. Your Ford E250 Catalytic Converter removes pollutants from your vehicle's exhaust by using a metal catalyst, such as platinum. If your converter has a carbon buildup or mild oil fouling, Stop the Rattles. Since replacing a bad catalytic converter can cost thousands, here are some ways to buy time. That is a sign of a possible bad catalytic converter. Diagnosing a bad catalytic converter is very important to make sure that you do not replace a fully functional catalytic converter because of the replacement cost. One of the common symptoms of a bad catalytic converter is a foul smell that will get stronger over time. What Is A Catalytic Converter And Why Do You Need One? Some petrolheads see them as a nuisance, but cats are a vital component for your vehicle's emissions control. The casing of the converter shrinks at a much faster rate than the substrate compressing it. In either of these instances the components in the converter can melt and cause extensive damage to your entire exhaust system. Problems are often a result of issues outside the operating capacity of a converter. The exhaust is already gone and in the converter and doesn't effect engine unless there is a back pressure issue. Featured Brands. The fix is to replace the catalytic converter and also repair whatever caused it to fail, assuming it didn’t just wear out. bad catalytic converter symptoms clogged catalytic converter symptoms driving with a bad catalytic converter symptoms of bad catalytic converter Tsukasa Azuma He owns a car repair shop at downtown Osaka, and he put all that experience to good use in his sharing posts. Fix The Real Problem First, Then Change The Converter. A bad or clogged catalytic converter can ultimately lead to engine failure, so it's important to address the issue promptly. This article applies to the Lexus RX (2007-2014). Some find a lacquer thinner effective, too, with the ratio of 1 gallon of thinner to a half-full gas tank. The tech will begin with a physical inspection and check to see if the catalyst material has broken apart. The cost of a Catalytic Converter Replacement depends on the type of car you drive. Toyota Camry 1997-2001: How to Replace Catalytic Converter. Failed catalytic converters are usually damaged by heat (from running too lean a mixture in the engine), or are contaminated by fuel/soot (from too rich of a mixture or an ignition miss) or oil (rings, etc) or antifreeze (head gasket, cracked head or block). The easiest way to do this is by searching on online search engines like Google, where you'd input keywords like "how much is a catalytic converter", "catalytic converter repair cost", "catalytic converter price", "catalytic converter shop near me" or "catalytic converter repair near me". How to Replace a Catalytic Converter Learn how to replace a bad catalytic converter. You can test for an exhaust restriction by having someone stand behind the tailpipe with a rag over the outlet of the exhaust pipe as you mash the gas pedal to the floor a few times. These may be signs of a bad catalytic converter: The engine loses power. A faulty catalytic converter can decrease the performance as well as the efficiency of the driver of your vehicle. But since that was the code they got, you could replace the catalytic converter yourself. The previous owner of my truck gave me the results of his last smog check at purchase. There is value in these metals so that they are a prized item and the theft of a catalytic converter can provide a substantial return to a thief. The catalytic converter is a device installed in the exhaust system to significantly reduce the emission levels of hydrocarbons (HC), carbon monoxide (CO), and in the case of most newer catalytic converters, oxides of nitrogen (NOx). Often this means the bank 1 converter will need to be replaced. When a catalytic converter begins to fail, its monolith substrate filling cracks, Gut it. Your catalytic converter is a vital part of your car's emissions control system. Catalytic converters are designed to last the entire lifetime of your car, however, unattended repair issues in other components of the exhaust system can cause wear and breakdown. Then, locate the catalytic converter at the center of your exhaust system and remove the oxygen sensor with a ratchet wrench. Has anyone replaced their catalytic converter? How did you do it ? Any tricks/tips ?. 0l catalytic converter 2005. A catalytic converter is a piece of the vehicle whose function is to reduce the amount of polluting gases emitted into the atmosphere. Where is the best place to replace a catalytic converter; how much should it be to replace a catalytic converter 2005 Chevy impala; How much does it cost to replace a catalytic converter on a 2002 Lexus? looking for an auto repair shop that works on air conditioners in 08872 area. If you do opt for an aftermarket converter, get a “Direct Fit” converter that bolts right in the same as the original. To fix this problem, cut the damaged converter on both ends. Otherwise if you simply replace the converter, send the vehicle out…the odds on you misdiagnosing the problem or failing to correct the real problem just went straight up. Symptoms of a Bad Catalytic Converter The catalytic converter sits between the exhaust and the engine, and cleans the exhaust gases of harmful pollutants. In addition, a clogged converter can't control the harmful emissions the vehicle's exhaust releases into the air. Replacement Cost. Environmental Protection Agency in 1975. I was told by AAA when my van broke down on me. The 1999 Dodge Ram 1500 has 4 problems reported for catalytic converter damaged, restricted exhaust flow. You repair a clogged catalytic converter by replacing it. The average cost to replace a bad catalytic converter ranges from $945 to $2475. However, having catalytic converter problems doesn't necessarily mean that the converter has to be replaced. As the engine runs, the catalytic converter warms up to an operating temperature of 500-1200 °F. therefore, through this article, i will show you how to clean a catalytic converter template and avoid early replacement. If you are experiencing any of the other symptoms along with the Check Engine light being on, then you likely have a bad catalytic converter. If your converter has a carbon buildup or mild oil fouling, Stop the Rattles. When they go bad, they send incorrect information to your vehicle's computer which can make it interpret your vehicle data as your exhaust running lean. » LEARN MORE: Get an estimate for a new catalytic converter. These may be signs of a bad catalytic converter: The engine loses power. If the engine is running poorly a converter's temperature can soar much higher due to the processing of un-burnt fuel and increased chemical reaction which will cause the internal honeycomb itself to begin to melt and break apart which can create a partially or totally plugged unit. In addition, a failed oxygen sensor can cause overheating. Driving with a bad catalytic converter for too long may eventually lead to an engine shutdown, so never delay in replacing it. From direct fit bolt in converters to weld in universal options, we've got your catalytic converter options covered. Today's catalytic converters are much more efficient and reliable than those of 40+ years ago, so if yours needs replacing, don't replace it with a straight pipe. The catalytic converter is quite an expensive part to have to replace on a vehicle. However, the average lifespan of the catalytic converter or the 'cat' is around 100, 000 miles or 160,000 kilometers. One of the main elements in reducing emissions in a converter is the catalyst. Installing a new catalytic converter usually takes about one hour. The replacement cost of a catalytic converter could be as little as $900 or as much as $2,500. This could be a simple problem to fix or it could mean the catalytic converter. Catalytic converters on older model cars tend to have a simpler design, and are less expensive to replace than more recent high-tech versions. How To - Diagnosing And Replacing Automotive Catalytic Converters Automotive Your cars catalytic converter is designed to burn extra gasoline fumes that make it through your engines combustion chamber to reduce your cars emissions. com names replacing a catalytic converter as the third most common car repair related to a "check engine" warning light, and estimates the average cost for parts and labor at $1,029. But recently, the car is giving poor mileage. Average repair cost is $1,050 at 133,550 miles. Where is the best place to replace a catalytic converter; how much should it be to replace a catalytic converter 2005 Chevy impala; How much does it cost to replace a catalytic converter on a 2002 Lexus? looking for an auto repair shop that works on air conditioners in 08872 area. You can test for an exhaust restriction by having someone stand behind the tailpipe with a rag over the outlet of the exhaust pipe as you mash the gas pedal to the floor a few times. one way to test is vac gauge to constant vac source record vac at idle then rev to 2500 rpms if vac gauge stays near 0 to 5 inches it could be plugged or smashed. Is this considered an exhaust leak if in fact the two wet spots are coming from the cat. The exhaust is already gone and in the converter and doesn't effect engine unless there is a back pressure issue. If there is a noticeable change in the performance of your vehicle, then the converter most likely has a clog and is going bad. It also told me that my alternator is in need for a repair or change (although standard tests don't show this). No, he'd probably buy an aftermarket converter and. Inside are two ceramic blocks coated with precious metals: platinum, palladium and rhodium. How to Replace a Catalytic Converter Learn how to replace a bad catalytic converter. It was created in response to regulation introduced by the U. Driving with a bad catalytic converter for too long may eventually lead to an engine shutdown, so never delay in replacing it. How to make sure catalytic converter is bad when you get DTC's P0420 and P0430 at the same time? I recently experienced misfiring (DTC's P0300, P0301 and P0303). Welding, Repair, or Patch Catalytic Converter Crack. Since you don't want to do that, you would be better off replacing your catalytic converter instead. Catalytic converters are designed to last the entire lifetime of your car, however, unattended repair issues in other components of the exhaust system can cause wear and breakdown. But the investigation can be well worth it. Use a bottle of catcon cleaner and pour all of it into your gas tank. The most difficult aspect of this job is getting. A long drive will burn off most of the sulfur. Your catalytic converter is a vital part of your car's emissions control system. I got rear ended and the exhaust pipe was mashed forward causing the crack in my Catalytic converter's weld. Some of the better units can kill up to 95% of the bad stuff before kicking it out of your tail pipe. Catalytic converters are very known to fail in a lot of cars and are often very expensive also if you are looking for a brand new. P0430, o2 Sensor or Catalytic Converter?? was created by NissanMaxx Hello everybody. Get that car to a repair facility, and have them diagnosed this code. Bad Catalytic Converter Symptoms. I bought a pre welded clamp on kit for my Toyota Tacoma and had a friend put it on for me. The 1999 Dodge Ram 1500 has 4 problems reported for catalytic converter damaged, restricted exhaust flow. The exhaust gas then flows through pipes into the catalytic converter (s), through the muffler (s) and out the tailpipe (s). It works by converting harmful emissions from your car's engine into safe gases and water. You may have known that the catalytic converter is an integral part of the exhaust system, processing all exhaust leaving the engine before it leaves into the atmosphere. If you have not had a tune up, I would suggest that and change the o2 sensor or atleast have it checked converters dont just go bad, if the car is running lean it will cause the system to run lean which will make it run a hotter system causing the honeycomb in side the converter to melt there are many reasons but those are the most 2 reasons for converter failure the plugs for example in most. You can expect the labor costs to be anywhere from $70 to $200, which is not that bad. Your car's exhaust system (below) comprises: a catalytic converter (s), at least two oxygen sensors and exhaust pipes that route the engine's exhaust from the engine, through the catalytic converter, and out the car. Replied by Lord Ihcalam on topic clogged catalytic converter read scannerdanner's post. Its a motor problem, it should be covered. Discount Auto Parts and Accessories. what it means when your get a code read of po420 or po430 It is important to remember that if your "Check Engine Light" illuminates and someone just simply reads a code of PO420, 421, 430 or 431 this does not necessarily mean the Catalytic Converter is bad!. At the dealership, the diagnostic gave P0420 code "internal fault with catalytic converter". A sulfur smell means there is a problem with the catalytic converter. As the engine runs, the catalytic converter warms up to an operating temperature of 500-1200 °F. Often this means the bank 1 converter will need to be replaced. To fix yours without taking it to the shop, check out these quick and simple. Catalytic converters generally resemble exhaust mufflers, and they are fitted into the exhaust system upstream of the actual mufflers. Are you getting bad fuel economy, and does it smell like rotten eggs when you zip around town? Sounds like your catalytic converter is down and out, so here is some information on how to replace it on your Toyota Camry. You could have a bad catalytic converter!. com names replacing a catalytic converter as the third most common car repair related to a "check engine" warning light, and estimates the average cost for parts and labor at $1,029. The exhaust system begins at the cylinder head exhaust ports, where exhaust flows into the manifold (s). Check for leaks 1st. They lowered the exhaust and sealed up the cat's crack with no issues for $170. I bought the replacements, just can't seem to figure out how to get to the bolts. Repeat two or three times, giving the converter a chance to expel debris. There are several ways they can fail the can shoot out a sulfur soot or they can smell like rotten egg smell or than can set codes from the pcm and rattlling noises low power can feel like a plugged fuel filter. Also, if NOx sensor’s ‘head’ is aged, the sensor can stay in ‘Not Ready’ mode for a while, no errors are stored in MSD80 memory, but Desulphation sessions are disturbed. Often, a failed oxygen sensor is the culprit. 4 Benefits Of Removing Your Catalytic Converter. It's a hot job (literally) that operates at temperatures of 600 to 1000 degrees F. Repairing or replacing a catalytic converter can cost close to $2,000. Now that you know a few bad catalytic converter symptoms, schedule a checkup with your mechanic today. We've gathered 9 Tips to help you save your catalytic converter from premature failure as well as provide a guide on how to break in your new cat. Use a bottle of catcon cleaner and pour all of it into your gas tank. Generally speaking, the catalytic converter is good for the life of the vehicle. Warning, it will be VERY hot, do not burn yourself! If the engine RPM raises quickly and there is lots. Diagnosing a plugged or fouled catalytic converter is only half the fix. On the Tacoma the cat has to reach below 80% efficiency before it typically sets a code. The following article contains some bad catalytic converter symptoms so that you can keep an eye out for any warning signs and invest in a new one as soon as possible. The catalytic converter is built into the vehicle’s exhaust system. Catalytic Converter Replacement Cost Comparison The cost of replacing your catalytic converter will depend on the make and model of your car and where you have the repairs done, but there's a common price range across most cars. 3l catalytic converter used catalytic converter california legal catalytic converter 2008 toyota prius base 1. Symptoms Of Clogged Catalytic Converter And How To Fix It Properly? You know your car of being oil efficient or at least doesn’t need to feed the tanker like your neighbors and co-workers. A little surprising for a catalytic convertor to fail that soon. A sulfur smell means there is a problem with the catalytic converter. No internet, books, nothing. So I thought, why not to fix the existing one. Replacing a catalytic converter in your car can be expensive, but this hack can help fix it cheap and fast. Then you can perform a few test drives to determine if you have a bad O2 sensor (or 2 sensors, etc) or if the catalytic converter is truly damaged. In typical converters, the catalyst can be a precious metal such as platinum,. This is your baseline vacuum. I have not had a CEL appear and have had the crack for 1k+ miles. 5l catalytic converter honda catalytic converter 1998 honda cr-v ex 2. But your symptoms are 100% consistent with a bad oxygen sensor (which are sometimes attached directly to the catalytic converter). You repair a clogged catalytic converter by replacing it. The easiest way to do this is by searching on online search engines like Google, where you’d input keywords like “how much is a catalytic converter”, “catalytic converter repair cost”, “catalytic converter price”, “catalytic converter shop near me” or “catalytic converter repair near me”. For those interested in replacing their failed catalytic converters, brand new catalytic converter cost between $400 - $1,600, depending on the type on your exhaust system. Catalytic Converter Replacement Cost Comparison The cost of replacing your catalytic converter will depend on the make and model of your car and where you have the repairs done, but there’s a common price range across most cars. When a Catalytic Converter is Failing, What can happen to a Car? There can be a few different red flags that present themselves when you go driving in a vehicle whose catalytic converter is starting to fail. The best thing you can do is be alert for signs of trouble and head for a service facility if you suspect that the catalytic converter is malfunctioning. The 1999 Dodge Ram 1500 has 4 problems reported for catalytic converter damaged, restricted exhaust flow. If you live in an emissions area of our country, catalytic converter repair can also be essential to you being able to drive your car legally and continue to have the ability to renew your registration. com names replacing a catalytic converter as the third most common car repair related to a "check engine" warning light, and estimates the average cost for parts and labor at $1,029. I'm not sure if it was a bad diagnosis, but the repair shop might have determined the catalytic wasn't the problem by pulling it off and checking your truck's performance without it. I can't find any info on 2004 Nissan Quest. The one that Evadman is referring to is between the catalytic converter and the body of the car. I wanted to reach out to 430 owners to see if anyone has experience a cracked catalytic converter? For everything we hear about cracked manifolds, I was shocked to find I have a cracked OEM cat. Fixing Bad Catalytic Converters With P0420 #2452218 12/03/11 08:06 PM 12/03/11 A good fix for P0420 is a couple of spark plug anti-foulers screwed into the post. A catalytic converter, which cleans the fumes of pollutants, is built to operate at pretty high temperatures. The catalytic converter is a device installed in the exhaust system to significantly reduce the emission levels of hydrocarbons (HC), carbon monoxide (CO), and in the case of most newer catalytic converters, oxides of nitrogen (NOx). I guess the catalytic converter went bad, which i could care less about but i live in MA so emissions is pretty strict and my sticker expires in december. How To - Diagnosing And Replacing Automotive Catalytic Converters Automotive Your cars catalytic converter is designed to burn extra gasoline fumes that make it through your engines combustion chamber to reduce your cars emissions. We've gathered 9 Tips to help you save your catalytic converter from premature failure as well as provide a guide on how to break in your new cat. Catalytic converter failure can be a pain to fix. Without a properly functioning catalytic converter, you are not only going to fail your emissions test, but you are also causing more pollution. When replacing the catalytic converter, the oxygen sensors may need to be replaced. This is your baseline vacuum. If one went bad I can only assume the other one is on it's way out. Has anyone replaced their catalytic converter? How did you do it ? Any tricks/tips ?. If you do opt for an aftermarket converter, get a “Direct Fit” converter that bolts right in the same as the original. A wide variety of classified ads Buy, rent, sell and find anything - buy catalytic converter inhawaii listings. The catalytic converter is only effective at temperatures above 750°F. Hi Viewers, I am sharing this video on how to diagnose a bad catalytic converter based on my personal experience. com – Classifieds across Florida. The catalytic converter helped drive the push toward unleaded gasoline as well. The average cost to replace a bad catalytic converter ranges from $945 to $2475. The Catalytic Converter is in the line of the exhaust between the engine and the muffler. Catalytic Converter Replacement Cost Comparison The cost of replacing your catalytic converter will depend on the make and model of your car and where you have the repairs done, but there’s a common price range across most cars. After removing the catalytic converter, use a pressure washer to blast out any contaminants from the matrix. It doesn't make a lot of sense to save a few bucks on plugs and then pay $1,600 on new cats. A bad O2 sensor feeds wrong information to the computer which can affect the performance of the catalytic converter. 30EA nitric oxide catalytic converter, sulphurized. This essential emissions system component can sap miles per gallon and drive up your fuel consumption as it gradually loses efficiency and impacts your engine’s power production. You repair a clogged catalytic converter by replacing it. A little surprising for a catalytic convertor to fail that soon. The one that Evadman is referring to is between the catalytic converter and the body of the car. I'm wondering how you would remove/replace the front catalytic converter. This is done to provide more heat to the catalytic converter for faster ignition of the catalyst. The sensor is changed by unhooking and unscrewing it from the exhaust pipe, the catalytic will need to go to a repair shop. Although there is probably something wrong with your catalytic converter, you may be able to get it back to normal without having it replaced. Replacing your catalytic converter is costly, so, knowing if a new catalytic converter is needed pays off. Here is a picture of the catalytic converter split in half. Bad Catalytic Converter Symptoms. Her 4-runner To#¤ta sounded like dog sh*t the other day so I asked her about it. P0420 How To Diagnose A Bad Catalytic Converter -EricTheCarGuy. What is the most important emissions control device on a vehicle today? The catalytic converter, because it cleans up any exhaust pollutants that exit the engine. If you are interested in the purchase of a Universal Catalytic Converter and are not sure whether the application is correct for your vehicle please call our knowledgeable sales staff for assistance. The oxygen and air fuel ratio sensors that a good number of latest cars are built to verify the efficiency of the catalytic converter by checking the gas levels in the exhaust. Your Ford E250 Catalytic Converter removes pollutants from your vehicle's exhaust by using a metal catalyst, such as platinum. Some specialty cars could be higher yet. Major Problems Told By a Bad Lexus ES300 Catalytic Converter.