Removing Catalytic Converter O2 Sensor

As the code description implies the P0420 code means that the vehicle's control module has detected that the three-way catalytic converter is not working properly (is not as efficient as the factory is expecting). If your car has post CAT O2 sensor as well then do not remove it. Is the critical unit is the upstream O2 sensor for emissions inspection? And what are the clear indications (based on scanner data) of a bad catalytic convertor, and by extension a failing rear O2 sensor? The secondary sensor is purely to monitor the efficiency of the catalytic converter and be a tattle tale if the converter isn’t up to snuff. When you remove your catalytic converter, your post O2 sensor will see higher temperatures and greater flow of unburnt fuel. Catalytic Converters & O2 Sensors Download PDF. *This O2 cel fix with miniature cat will trick your ECU into thinking the stock catalytic converter is still installed. Be careful when pulling apart the wiring harness. it has worked for me for 4 years saves me gas too!!!thanks. 9 volts (rich). O2 Sensor Wiring goes bad. • Pull off the catalytic converter next, separating it from the exhaust system. 6L V8 4x4; 2011 Ford F250 6. the o2 sensors are most comonly on the first cat (should be next to the engine block) bypassing it means the o2 censors will be disconected so that will result in a check engine light on your dash. You don’t want to mess with the oxygen sensor before the catalytic converter because that is the one that controls the fuel mixture in the engine and regulates things. Installing your post cat O2 sensor without a Catalytic converter installed will make your Malfunction Indicator Lamp come on. LUOTIVON O2 cel fix actually has a miniature catalytic converter built inside which will trick your ECU into thinking the stock catalytic converter is still installed. Posted in Engine Bay Tags: air , air fuel ratio , batery , catalytic converter , computer , engine , exhaust , F. If you drive your car with a faulty oxygen sensor, you may get poor gas mileage and it can damage the catalytic converter. Thirdly, removing the catalytic converter may trigger a fault code which will illuminate the check engine light (assuming you have one). This time it was bad rear O2 sensor. The tool will strip before it has a chance to get a good pull. If you have post catalytic converter oxygen sensor, then removing CC will seriously degrade engine performance and might generate problem codes. Some said no, it will cause failures of the valves etc, others said it was fine. Do I need to get a tuned PCM that disables the after-cat O2 sensor? Otherwise, I suppose my best bet is going to be replacing it, but if I can remove it and not have an SES light on or shitty performance, by all means, I am going to do that instead. You can do with a special tool called an O2 wrench. It takes twisting and turning but it will drop out. My catalytic converters are rattling up a storm. I dont know much about your car specifically but usually bank 1 is the sensor before the catalytic converter and bank two is post catalytic converter. This may very temporarily change the firing conditions of the engine and clear the check engine light, however if the O2 sensor is bad or the CAT is bad the problem is just going to come back and very quickly. (It's still tight, but manageable) 2. Step 1 - Removing the Sensor. If you want a solution, go get a pair of high flow magnaflow cats installed-it will increase your sound and is supposed to increase performance. And it will help get rid of that annoying check engine light you get after modifying your exhaust or removing your catalytic converter, and sometimes even when installing a high. You may need the o2 sensor removal tool to get it off without breaking it. Checked it and they said the catalytic converter needed. The second sensor is under less presure of course. I drive a 2005 Toyota corolla matrix and I've had the CEL(Check engine light) on for a while now. From that standpoint, a "catalytic converter cleaner" is gimmicky. Or it may be just ahead of the catalytic. • Pull off the catalytic converter next, separating it from the exhaust system. It had been just zip tied up to the e-brake cable for a long time but I just removed the e-brake and decided that this o2 sensor and cable needs to go if it. I think that some of the check engine light issues I have had were false positives due to poor fuel in the Louisville, KY area. But the heat the cats produce is undeniable, and sometimes unbearable. Catalytic converter O2 oxygen sensor mounting bung was made of 304 stainless steel easy to weld. The oxygen sensor plugs was made of plated mild steel with zinc plating. I’ll leave the primary O2 sensor in as it’s not worth my time to pull it out. This could be due to multiple scenarios however, I'm running the EMS. The second place that I went to, Maximum Automotive (local here in Naperville, IL). 8 and1 volt like they were designed. Locate the oxygen sensor that is downstream (closer to the tailpipe) of the catalytic converter. 45V if the catalytic converter is functioning properly. Most newer vehicles have more than one (and as many as four), with the second sensor farther down the exhaust pipe, closer to the catalytic converter. • Restore the exhaust system by creating a straight pipe to facilitate. Buy Universal Fit 2" Inlet/Outlet 13" Overall Length Catalytic Converter with O2 Sensor Port High Flow Converter Cats EPA Approved (ATCC0016) at Walmart. Vacuum leak can do it too. Or it may be just ahead of the catalytic. Is the critical unit is the upstream O2 sensor for emissions inspection? And what are the clear indications (based on scanner data) of a bad catalytic convertor, and by extension a failing rear O2 sensor? The secondary sensor is purely to monitor the efficiency of the catalytic converter and be a tattle tale if the converter isn’t up to snuff. I was also under the impression that without that sensor, the ECU is unable to operate, essentially breaking. You will need to use the O2 sensor socket and ratchet to remove it from the exhaust manifold. com, flat blade screwdriver, and 7/8 inch O2 Socket and ratchet. Recommendation on a Catalytic Converter With O2 Sensor On the Inlet Side ; Universal Catalytic Converter Fit on a 2005 Ford F-150 4. Today I finished that project and plugged in my OBDII reader to find out that the latest code that had been thrown (probably 2 or 3 months ago) was P0141 (O2 Sensor Heater Circuit Malfunction {Bank 1, Sensor 2}), which means that the O2 sensor has failed. The upstream O2 sensor in the exhaust manifold reacts to the exhaust gases as they exit the engine. Get it and drill it out with a 1/2 inch bit and scew it inline with the cat and o2 sensor. I would recommend getting it custom tuned by someone using HP tuners, you can turn off that code in the tune and the light will not be on. Leaking fuel injectors–That dumps fuel into the cylinders and then into the catalytic converter, causing overheating. the o2 sensors are most comonly on the first cat (should be next to the engine block) bypassing it means the o2 censors will be disconected so that will result in a check engine light on your dash. d enso 234-4206 Oxygen Sensor and put it in place of the old one. Chevy Cruze P0420 Code Possible Solutions. If you want to take it a step further, remove your pre-cats (if your car has them) and also remove the stock airbox and get a K&N air filter (or aftermarket intake) as well. doityourself. No you should not remove the catalytic converter!. Recently my check engine light came back on with the same code, and I looked under my hood and it looks like they replaced the one after the catalytic converter. In other words, if you remove your cat from your 320, your o2 senors will fault which will trigger MAF problems undoubtly and probaly kill other systems over time. This time it was bad rear O2 sensor. Do to todays ecm's checking cat with o2 sensors. Figured it if didn't work, no harm done as the sensor was throwing codes anyway. I have a 2001 suzuki grand vitara. O2 Simulator Mini Cat Cel Fix, Big Daddies Garage Mini Catalytic Convertor Rear Oxygen Sensor Simulator is the best and easiestway to clear p0420 / p0430 codes for bad or missing catalytic converters. Is the critical unit is the upstream O2 sensor for emissions inspection? And what are the clear indications (based on scanner data) of a bad catalytic convertor, and by extension a failing rear O2 sensor? The secondary sensor is purely to monitor the efficiency of the catalytic converter and be a tattle tale if the converter isn’t up to snuff. Step 5 - Remove the O2 Sensor. Start by getting the car up on some safety stands, then roll underneath it with a. Hi, just FYI but I updated the thread title so it would be more visible if people are searching for related information regarding the catalytic converter, P0420, P0430, and diagnosis. So what is Sensor 1? Sensor 1 is the O2 sensor that is located before or upstream of the catalytic converter. Thirdly, removing the catalytic converter may trigger a fault code which will illuminate the check engine light (assuming you have one). Oxygen Sensor is bad. Illegally removing a catalytic converter can result in serious. There are two oxygen sensors: one is upstream of the catalytic converter and one downstream of the catalytic converter. Now remove the middle exhaust hanger, which is a tension mounted spring just before the flex pipe. Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases the catalytic convert needs to be replaced. 2l's Catalytic Converter? There is an O2 sensor before and after the cat, what will it take to keep the CEL off? I can tell you from experience. Most newer vehicles have more than one (and as many as four), with the second sensor farther down the exhaust pipe, closer to the catalytic converter. how to cheat the o2 sensors after CATALYTIC CONVERTER removal ? If this is your first visit, be sure to check out the FAQ by clicking the link above. To perform this conversion, the catalytic converter works with a vehicle's PCM (Powertrain Control Module) and other emissions control devices. So, around 350K I used a spacer at the O2 sensor bung opening and the P0420 went bye bye. Sensor 1 is the O2 sensor that is located before (upstream) of the catalytic converter or also called the pre-catalytic converter. You can do with a special tool called an O2 wrench. If one or more of the oxygen sensors are faulty, your car may not pass the emissions test. P0430 - Catalyst Effeciency BANK 2 You will have one O2 sensor before (Upstream) the catalytic converter and one O2 sensor after (Downstream) the catalytic converter. Amazon's Choice for oxygen sensor catalytic converter 90 Degree CEL Check Engine Light Bungs O2 Sensor Socket Real Mini Catalytic Converter 4. The rear heated oxygen sensor, after three way catalyst, monitors the oxygen level in the exhaust gas. Thirdly, removing the catalytic converter may trigger a fault code which will illuminate the check engine light (assuming you have one). Deoxidization process. And it will help get rid of that annoying check engine light you get after modifying your exhaust or removing your catalytic converter, and sometimes even when installing a high. If the oxygen sensor or the converter is failing, disconnecting the battery will clear the codes and, if there is a problem, the light will come back on with new codes. A faulty sensor can cause poor fuel consumption and can potentially cause serious damage to the engine, so the O2 sensor replacement cost can be far less than the additional fuel or the cost of major engine repairs. List of the Pros of Removing a Catalytic Converter • Uncouple the O2 sensor on your vehicle. Now it's back at the dealer and this time they say they xhecked the harness, no problem with it, and the downstream sensor is now faulty along with a bad catalytic converter. o2 sensors & catalytic converter diagnostics Converters typically fail one of two ways: they get too hot, melt and plug up, or the catalyst becomes contaminated and useless. This time it was bad rear O2 sensor. Plus, the ever present bugbear of low end loss lurks with the removal of the cats, I believe. I removed and replaced a Rav 4 catalytic converter recently. My Techstream noted 2 codes active on my dash since I bought the used car APR17: P0420 - or Catalyst System Efficiency Below Threshold (Bank 1); specifically, catalytic converter and rear O2 sensor. So, around 350K I used a spacer at the O2 sensor bung opening and the P0420 went bye bye. It will likely take some effort to remove so don't hesitate to use some force. Over time, a second O2 sensor was installed downstream of the converter. • Restore the exhaust system by creating a straight pipe to facilitate. P0420 Causes. Because they engineered the engine with the back-pressure from the Catalytic converter in there. Re: Removing XJ Catalytic Converter Not sure what year your XJ is but on the newer models the cat has an o2 sensor after it. Then you will need to get under your Thunderbird and remove the clamps that hold the catalytic converter in place between two lengths of exhaust pipe. Reconnect 02 sensor by pluging it in, then pull the ecu 15w fuse to reset it and you now have a Catalytic Bypass. High Flow Catalytic Converters and the P0420 engine code. • Restore the exhaust system by creating a straight pipe to facilitate. The rear O2 sensor serves ONLY ONE purpose, to check operation of the cat. Its two electrodes provide an output voltage corresponding to the quantity of oxygen in the exhaust relative to that in the atmosphere. Re: How can I bypass the catalytic converter o2 sensor on my 04 GLI (Mafiamike954) 11-05-2009 12:43 PM #2 Maybe try a O2 spacer or get a software that eliminates the rear O2 sensor. Remove the O2 sensor with an O2 sensor socket and ratchet If the O2 sensor will not remove, cut the O2 sensor wire and remove it with a 7/8 inch socket step : Removing the Catalytic Converter (3:18). _____ 1982 Vanagon Camper with ALH TDI conversion. Clogging in the catalytic converter can also prevent you from cleaning it without removal of the converter itself. This is a classic sign that your catalytic converter is starting to fail. No need bypass sensor / retune etc. I still wonder, and I have read somewhere do we actually need the backpreassure. Keep the O2 sensor in the same location, however, backspace it with a spark plug non-fouler (drill a larger hole on the thread going into the O2 bung so the O2 sensor can read. He goes over how to remove an old, failing catalytic converter, and install a brand new Magnaflow replacement catalytic converter on many vehicles. Some people eliminate the rear O2 sensor located directly in front of the catalytic converter to overcome the check engine light. Remove the 12mm bolts mounting the manifold to the engine. is proud to be the distributor for Catco Universal Catalytic Converters. If it exceeds some number, it throws a code. The cat will do the final cleaning of the emissions. The o2 sensor helps to ensure that the amount of fuel inj. i took to the dealership and i was told my one of my 02 sensor is messed up, they recommend getting all 4 changed and my catalytic converter were running over 1000 degrees also and needed to be replaced. The only thing that should matter when removing cat converter is if it has a sensor. The reason for this being that with use, they break down and actually end up doing more harm then if they were not there at all. Bad Catalytic Converter Problem and Oxygen Sensor Code Recently I had a check engine light for the O2 sensor on a Mercedes Benz. So my only option is to get a new one or to gut the Catalytic Converter and replace it later with a high flow one when I have the money. How to replace the rear oxygen sensor P0136. You don’t want to mess with the oxygen sensor before the catalytic converter because that is the one that controls the fuel mixture in the engine and regulates things. I changed the catalytic converter of bank 2, but still showing same codes, is it possible the pre-cat O2 sensor need to be replaced? I'm thinking to switch the pre O2 sensors to see whether the code will go for bank 1. So it goes o2 sensor, drilled out non fouler, regular non fouler, cat. This O2 cel fix actually has a miniature catalytic converter built inside and will help get rid of that annoying check engine light you get after modifying your exhaust or removing your catalytic converter, and sometimes even when installing a high flow catalytic converter. To perform the oxygen sensor test, refer to the article “How to test a bad o2 sensor” for instructions. It sucks, but you're going to need a few tools and some know-how to get it out so you can be back on your way. 7 Dodge Dakota JOIN HERE 2/12/2004 20:25:58: RE: fake out O2 sensor IP: Logged Message: Dont waste money on o2 simms. O2 Simulator Mini Cat, Angled, Straight Cel Fix, Big Daddies Garage stainless steel Oxygen Sensor Simulator is used to clear p0420 / p0430 codes for bad or missing catalytic converters. It sucks, but you're going to need a few tools and some know-how to get it out so you can be back on your way. They probably see this all the time. Lotus Esprit World was unaware of a way of Removing the Cataylic converters from a V8 without the causing the ECM to go into 'limp' mode, due to the reading from the Oxygen sensors. If you remove the catalytic converter you will be in violation of Federal and some state environmental regulations. The dealership confirmed it's the catalytic converter (front and rear apparently ) My 2000 SR5 has about 147,000 miles on it and I believe at least one O2 sensor was replaced prior to me buying it a month ago. Bad o2 sensor or clogged catalytic converter? So my 97 eagle talon n/t is throwing an aoxygen sensor code (the guy at autozone said its the one before the catalytic converter). Depending on your vehicle, removing the catalytic converter could be as trivial as removing some bolts or as difficult as cutting the exhaust pipe. So I'm back to square one. The factory cat was old technology and lost about 10 hp. it has definitely been replaced recently and its a very expensive o2 sensor for this car. Be careful when pulling apart the wiring harness. Do not remove Catalytic converters, these devices are present for a very good reason they reduce pollution by converting harmful emissions to safer emissions, if you remove a "cat" you make your car pollute more, more harmful to people and the env. How to replace the rear oxygen sensor P0136. Re: Removing Catalytic Converter. Theres usually a oxygen sensor around or even inside the cat so when you remove the cat it causes codes to be sent to your computer and your check engine light will come on. Once you have located the faulty sensor, drench it in penetrating oil, allowing it to soak for at least 24 hours prior to performing the task. What is the cost to Replace Catalytic Converter or Oxygen Sensor for 2008 Toyota Prius?. hands in that small space to get the bolts to tge top of the converter. If you want to take it a step further, remove your pre-cats (if your car has them) and also remove the stock airbox and get a K&N air filter (or aftermarket intake) as well. I'm about to take my truck to the shop tomorrow and dump 60$ for them to remove this O2 sensor. Then, locate the catalytic converter at the center of your exhaust system and remove the oxygen sensor with a ratchet wrench. The pre-converter O2 senser is located in the exhaust manifod ahead of the catalytic converter. Faulty oxygen sensor will set different codes, for things like no response, lean mixture, faulty heater circuit, etc. 750 volts, which indicates that the catalytic converter is working efficiently. O2 Sensor Wiring goes bad. O2 Simulator Angled Cel Fix, Big Daddies Garage Angled Rear o2 Sensor Simulator is best to clear p0420 / p0430 codes for bad or missing catalytic converters. That O2 sensor is useless. O2 sensor wiring. Re: Fixed P04020 (Catalytic converter code) by changing o2 sensors Did you remove your intake manifold at the beach? A visual inspection of the interior of the converter doesn't really tell you whether the cat is good or not. 6 months later, light comes back on Had to change the spark plugs for a tuning project, light went back off,and hasn't come back on since. List of the Pros of Removing a Catalytic Converter • Uncouple the O2 sensor on your vehicle. The oxygen sensor (Lambda or O2 sensor) is connected to a computer that meters and controls the system to maintain as best as possible, this 14. This tells the computer how to adjust itself based on the amount of pollutants leaving the cat. Some say the cats flow a lot of air offering very little resistance while others say removing the cats will ruin the low end grunt because of the reduced back pressure. The front O2 sensor monitors the exhaust gases out of the engine. The 2 Downstream sensors were a bitch to get out, and I actually had to run a Thread Tap through the holes to allow me to put in the new sensors. I went to Advance Auto and twice THIS tool has been nothing but a waste of money. Replace your catalytic converter with a stainless steel straight pipe and watch your MPGs soar. As noted, it is against the law and you will need to trick out the rear O2 sensor. This is very important to remember. But, don't be surprised if it's not. I don't know a whole lot about these trucks, but there are plenty of S-10 forums that probably could answer your question. A lot of people say that the exhaust size effects back pressure, which is of course true - but. Once again within the past 6 mos or so, the check engine light came back on again and catalytic converter needed replacement again. O2 sensor wiring. This is a classic sign that your catalytic converter is starting to fail. There are O2 sensors on each side of each converter. Welcome to the 21st century of o2 simulators…. From what I can see there is no O2 Sensor after the cat so I think I would be pretty save gutting it and putting it back or putting a straight pipe through. Removing the cats WILL trigger a check engine light because the O2 sensors are seeing the same levels of emissions, which makes the ECU think the catalytic converter has failed, so it triggers a CEL (check engine light) to get you to get it fixed. A catalytic converter is essential to your vehicle's emission system; it functions by transforming "raw" exhaust into less environmentally damaging gases. On the exhaust side, these are oxygen (O2) sensors, which detect how much oxygen is in the exhaust, and tell the computer how lean or rich the. He goes over how to remove an old, failing catalytic converter, and install a brand new Magnaflow replacement catalytic converter on many vehicles. If the oxygen sensor or the converter is failing, disconnecting the battery will clear the codes and, if there is a problem, the light will come back on with new codes. converter toward rear of car. If you remove the cat and leave the downstream O2 in place, the ECM will eventually 'see' that the cat is gone and set a "Check Engine" light, but the vehicle will continue to run as normal so long as other systems are functioning. The O2 sensor is always a good idea to have. Hi, just FYI but I updated the thread title so it would be more visible if people are searching for related information regarding the catalytic converter, P0420, P0430, and diagnosis. He also said that he believes it is just the front converter that is plugged. The second place that I went to, Maximum Automotive (local here in Naperville, IL). Once again within the past 6 mos or so, the check engine light came back on again and catalytic converter needed replacement again. Please make sure of the problem before purchasing it!. Specifically it'll usually be the O2 sensor(s) on the upstream side of the catalytic converter. The o2 sensor helps to ensure that the amount of fuel inj. LUOTIVON O2 cel fix actually has a miniature catalytic converter built inside which will trick your ECU into thinking the stock catalytic converter is still installed. If the catalytic converter is working as intended, the upstream O2 sensor reading should reflect a fluctuating graph, which represents the engine switching between lean and rich mixtures. A properly tuned engine with a functioning O2 sensor, will give you a pretty clean exhaust. Our mini oxygen sensor converter can only solve the Problem of P0420 codes-faulty Catalytic converter. As for the catalytic converter, you cannot directly clean one while it is still on the car, because anything that is safe to run through the engine will be converted to CO2, O2, and N2, none of which will do any cleaning. How a Catalytic Converter Works. Vacuum leak can do it too. Monitoring oxygen levels in the exhaust is a way of gauging the fuel mixture. There's no downstream O2 sensor, so it's all good. Cel came back on not 24 hours later. Click to go to the oxygen sensor simulator web page. They just changed the sensor ($100 deductible on warranty). You can fix a CEL for the rear O2s one of 2 ways. But do not hollow it out, you will only lose power, replace it with a pipe; either welded on (best choice) or clamped on. Oxygen sensor Failure There are some clear signs that your oxygen sensor is no longer functioning. Vehicles have either one or two post cat oxygen sensors and an o2 simulater should be installed on each post cat sensor to remove p0420 and p0430 check engine light codes for a bad or missing catalytic converter. 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. You can get around this by fitting a spacer on the downstream lambda (O2) sensor. You see, modern systems monitor the function of the catalytic converter through the placement of an oxygen sensor in the cat, called the. Lotus Esprit World was unaware of a way of Removing the Cataylic converters from a V8 without the causing the ECM to go into 'limp' mode, due to the reading from the Oxygen sensors. Recommendation on a Catalytic Converter With O2 Sensor On the Inlet Side ; Universal Catalytic Converter Fit on a 2005 Ford F-150 4. This is a classic sign that your catalytic converter is starting to fail. The computer only needs a reading of 50 ohms from the o2 sensor to keep the 'check engine ' light off. Order your 2002-03 Nissan Altima Sentra Catalytic Converter with Downstream Oxygen Sensor with Upstream Oxygen Sensor 4 Piece Set - 1AEEK00318 today at 1AAuto. Buy Universal Fit 2" Inlet/Outlet 13" Overall Length Catalytic Converter with O2 Sensor Port High Flow Converter Cats EPA Approved (ATCC0016) at Walmart. My dads car is not in the scope of the Vin numbers mentioned but still has the factory catalytic converter. The o2 extender is called a spark plug defowler. Further to my video about upstream sensors, he. Sensor 2 is the downstream sensor, in the catalytic converter, smack in the middle of the underside of the car. Deoxidization process. Well with my understand the catalytic converter put back pressure on the motor which in turns reduces the horsepower and fuel mileage, because of extra amount of work the engines needs to recycle the already burned gas. I bought an O2 sensor removal socket that works perfect for the driver side, but how do you get to the passenger side one?. Crossover clamp. 2l's Catalytic Converter? There is an O2 sensor before and after the cat, what will it take to keep the CEL off? I can tell you from experience. Diagnosing a plugged converter is fairly easy, but diagnosing converter efficiency requires tapping into the OBD II system with a scan tool to check for codes and to. They just really don't know. Sensor 1 is the O2 sensor that is located before (upstream) of the catalytic converter or also called the pre-catalytic converter. 6 months later, light comes back on Had to change the spark plugs for a tuning project, light went back off,and hasn't come back on since. Okay so far two answers and both of them are wrong. I clear the code and it will reappear immediately after turning the engine back on. The read the before and after exhaust and trigger your check engine light is something is not right. It just a way of getting rid of CEL due to catalytic code P0420. But when the catalytic converter was stock it was CARB compliant. 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. The oxygen sensor plugs was made of plated mild steel with zinc plating. So I'm back to square one. If removing the oxygen sensor results in better performance, there is something wrong with your engine. The zirconium dioxide, or zirconia, lambda sensor is based on a solid-state electrochemical fuel cell called the Nernst cell. I removed and replaced a Rav 4 catalytic converter recently. Oil level is at “add” haven’t added anything since June and coolant shows full but when look in the radiator can’t see any. Weld bung and plugs was easy to weld and offer fantastic value for the user. Remember that there can be other causes of the P0420 trouble code like faulty O2 sensors or exhaust leaks and the problem may not be in your. Removing the catalytic converter will save alot more money than replacing it and will make your engine exhale better and last longer due to the removal of a suffocation device "cat" only issue outta all the ones I've removed it is if the downstream O2 sensor is plugged directly in it, which there are ways around. When you remove your catalytic converter, your post O2 sensor will see higher temperatures and greater flow of unburnt fuel. is proud to be the distributor for Catco Universal Catalytic Converters. The catalytic converter depends on the oxygen sensors to operate efficiently. well here is my question, i have a 2004 supercrew that has the stock exahaust which has four Catalytic Converters on it, two before the o2 sensor and two after, do you think i could remove the two after the sensor and help my horse power/ mpgs, i would think that would help flow quite a bit. You can do this if you have an O2 wrench available. If you are still determined to remove the Catalytic converter, then you will have to take off the O2 sensor. com, flat blade screwdriver, and 7/8 inch O2 Socket and ratchet. I could be a failing O2 sensor as well, running the system to lean or rich. catalytic converters do fail but the fault code is set due to rear O2 sensor value(s) being out of line. Bank #1 is the side of the engine that contains cylinder #1. O2 Simulators are only installed on the post cat (rear) oxygen sensors usually located at or slightly past the catalytic converter. If necessary, loosen double and single clamps and align muffler and exhaust pipe so that. Obviously, both camps can't be correct. Get it and drill it out with a 1/2 inch bit and scew it inline with the cat and o2 sensor. O2 sensors that are after the cat rarely fail so early. Hi, just FYI but I updated the thread title so it would be more visible if people are searching for related information regarding the catalytic converter, P0420, P0430, and diagnosis. I went to Advance Auto and twice THIS tool has been nothing but a waste of money. You have 2 sensors. MagnaFlow does offer converters that will mount the O2 sensor on the inlet side of the converter, but that are made for specific model vehicles. You can fix a CEL for the rear O2s one of 2 ways. The P2274 DTC refers to the second downstream sensor (after the second catalytic converter), sensor #3 on bank #1. O2 Sensor Wiring goes bad. After working on the exhaust system make sure that the system is not under stress, and that it has sufficient clearance from the bodywork. Okay so far two answers and both of them are wrong. uk: Car & Motorbike friend got it for me from UK and it made a difference. I noticed a gain in power also, then I loaded a cutom SCT tune from my dyno-guy (Pete Johnson, performance-dyno, Concord, NH. - he's done all of my drag car tuning) and picked up WAY more power, and better MPG. It determines this by comparing the switching frequency of the front o2 sensor to the back o2 sensor, and if the back o2 sensor is switching approximately less than twice as fast as the front one, it throws the code. Here's some signs to watch for, and what to do about it. By freeing up the manifold first, you can get to the three studs at the back of the catalytic much easier. In this situation, the "check engine" light will not come on to indicate catalytic converter failure, because all is well. This is the more difficult way of dealing with any Catalytic Converter problems. 2 out of 5 stars 15. Very thorough explanation JBX! I think the major motivation for removing the Catalytic Converter for owners, the high cost of replacement and the restriction caused by this device. Before installing our new catalytic converter into the vehicle we'll have to remove these plugs in the O2 sensor bungs. Hydrocarbons or unburned fuel are potential factor for CC failure. The second place that I went to, Maximum Automotive (local here in Naperville, IL). Deoxidization process. This can be caused by a fuel system problem, a clogged catalytic converter, damaged O2 sensors or a combination of all three. Just pushes the o2 sensor further away from the exhaust flow so it thinks you still have a working cat. This code can be set due to a number of things. The downstream O2 sensor in or behind the catalytic converter reacts to the exhaust gases as they exit the converter. I would've ended up replacing it in the future anyways so I might as well do it now and see if the code goes away. The O2 sensor tells the engine how much fuel to give it. How to Remove a Catalytic Converter O2 Sensor - In modern cars, the computer uses data from various sensors to determine how much fuel and spark to give the engine, ensuring that it runs correctly. If you cut it off on newer vehicles, there is a good chance it will run like s%^t due to the 02 sensors. Toyota catalytic converters bolt in so replacing it's not too tough. But you then have to deal with o2 sensor issues. To access the one on the exhaust manifold, you'll have to do the following. Its a 325i bmw so its got 2 cats. Recently, I had a dealer install a new converter, but the code is still present. You can remove the O2 sensor completely and replace it with a threaded bung (metal threaded cap) by turning the sensor out of the pipe with a wrench and then by threading the bung into the hole. P0430, o2 Sensor or Catalytic Converter?? was created by NissanMaxx Hello everybody. The ceramics in one of them have broken and started to rattle. Oxygen O2 Sensor Spacer Adapter Bung Catalytic Converter Fix Check Engine Light This O2 cel fix actually has a miniature catalytic converter built inside and will help get rid of that annoying check engine light you get after modifying your exhaust or removing your catalytic converter,and sometimes even when installing a high flow catalytic. You can get around this by fitting a spacer on the downstream lambda (O2) sensor. It's not things that I can easily remove either. This can only be done with a specific kind of tool known as an O2 wrench, but you can purchase one from parts dealers for between $30 and $40. Use the temperature gauge to read the input and output flanges after the catalytic converter. A week later cel came back on. Monitoring oxygen levels in the exhaust is a way of gauging the fuel mixture. The 2 Downstream sensors were a bitch to get out, and I actually had to run a Thread Tap through the holes to allow me to put in the new sensors. The catalytic converter recently failed and caused the exhaust to clog up. These methods for bypassing the O2 sensor are for the second O2 sensor or the one that is after the catalytic converter. Shop safely with us online or call 888-844-3393 and buy the quality part your car or truck needs today. The sensor is part of the emissions control system and feeds data to the engine computer. LUOTIVON O2 cel fix actually has a miniature catalytic converter built inside which will trick your ECU into thinking the stock catalytic converter is still installed. If you want to take it a step further, remove your pre-cats (if your car has them) and also remove the stock airbox and get a K&N air filter (or aftermarket intake) as well. You can do with a special tool called an O2 wrench. the o2 sensors are most comonly on the first cat (should be next to the engine block) bypassing it means the o2 censors will be disconected so that will result in a check engine light on your dash. This time it was bad rear O2 sensor. Its two electrodes provide an output voltage corresponding to the quantity of oxygen in the exhaust relative to that in the atmosphere. Cleaning the sensor did not work for my truck though, which is throwing a rear O2 code. You lost power because you relocated your FRONT O2 sensor. The O2 sensor located downstream of the catalytic converter only has the job of reporting how well the catalytic converter is doing. This can be caused by a fuel system problem, a clogged catalytic converter, damaged O2 sensors or a combination of all three. Stolen Catalytic Converter - O2 Sensor Ripped - Which one is it? Discussion in ' Gen 2 Prius Care, Maintenance and Troubleshooting ' started by Friendlyx , Sep 25, 2019. Wynn's Catalytic converter and Oxygen sensor cleaner optimizes the efficiency of the catalytic converter and Oxygen sensors by removing harmful deposits and restoring your vehicle's performance. com, flat blade screwdriver, and 7/8 inch O2 Socket and ratchet.