Spark plug non fouler o2 sensor. Does anyone know which size is appropriate for the O2.

Spark plug non fouler o2 sensor I'm really just looking to pass emissions, I don't have any other modification plans for the car. The link points to the Dorman 42006 which lists a 14mm thread size (outside diameter of theads). Jul 24, 2022 · Learn how to use a spark plug non fouler on O2 sensor to prevent spark plug damage and improve engine performance. . We would like to show you a description here but the site won’t allow us. An O2 sensor plays a crucial role in your vehicle’s exhaust system, monitoring the air-fuel mixture. It's likely that using two on each side would work. I’ve searched Amazon, eBay and google! Will someone with greater skills than I please help me find the right ones? Help! 18 results for "18mm non fouler" Results Check each product page for other buying options. Two: Place one of the non-fouler in a vise. Then screw the front non-fouler (with the second non-fouler and O2 sensor screwed into the back side of it) into the downstream O2 sensor hole. Archived post. Use a 18mm spark plug non-fouler, drill out the end with a 1/2" drill bit, thread the O2 sensor into the back side of the non-fouler and thread this into the exhaust pipe and reset the check engine light. ️ ️ Catalytic Converter for May 18, 2015 · If you can wait a week then instead of drilling spark plug non-foulers, you can find oxygen sensor spacers on ebay which are designed for this purpose. May 4, 2009 · 4. The correct size is reportedly 18mm. Also, ive heard of packing steel wool into the non fouler as well. A non-fouler adapter for a big block Ford (360/390) would work. i have over 5k miles on the car now with no CEL Dorman offers a variety of Spark Plug Non-Foulers for a range of applications. I need to know the size of the threads for. Mar 5, 2025 · An O2 sensor plays a crucial role in your vehicle’s exhaust system, monitoring the air-fuel mixture. Don't overlook the Allstar Performance O2 sensor plug if you're enhancing exhaust Frequently bought together This item: Dorman 42009 Spark Plug Non-Foulers - 18mm Gasket Seat, 2 Pack $2816 + Offset Oxygen Sensor Socket, 3/8-Inch Drive, 7/8-Inch (22mm), Wire Gate Accesses Sensor from Side, Preventing Damage to Wires, Universal for Most Cars Aug 20, 2007 · I just went through this with my 05,. This spark plug non fouler for O2 sensor is installed between the sensor and the exhaust system, effectively distancing the sensor from direct exposure to exhaust gases. They are basically just a spacer for spark plugs. Got the CEL again, ran the code and now it's only running a P0140 which means I need a new O2 sensor. Get yours online today and pick up in store. Let’s check it out now! This spark plug non fouler is designed for easy installation on specified vehicles to protect spark plugs from fouling and damage. Bank 2 results in the transmission oil pan being in the way, but I have been told there is a 90* non-fouler that may work in this situation. By understanding what size non-fouler to use, you can save time and money on unnecessary repairs or replacements. Walmart. This will enable the spacer to using for a long time. They are made of high-quality iron and are designed to increase the distance between the oxygen sensor and the exhaust system Defouler Exhaust System Install Track/ Offroad use only (O2 Sensor P0420 P0430) | AnthonyJ350 AnthonyJ350 128K subscribers Subscribe Dec 20, 2018 · 2Pcs O2 Sensor Spacer, M18*1. Find many great new & used options and get the best deals for 2 Pcs Spark Plug Non-fouler O2 Oxygen Sensor 18mm Anti Fouling Resistor Exhaust at the best online prices at eBay! Free shipping for many products! 1-16 of 207 results for "spark plug non fouler" Results Check each product page for other buying options. Put anti-seize on o2 sensor threads and install them into the newly made anti-foulers. So my question is this: Do I drill it out just enough Jun 15, 2022 · Use spark plug non-foulers. If you don't have a vise ask a buddy to hold it in place with a pair of pliers. It puts the downstream o2 sensor out of the direct exhaust flow so that the signal reading doesn't change as fast and cause the code to come up. Essentially, the ECU uses the readings from the rear oxygen sensor to calculate an offset for the readings from This should fix your check engine light for any O2 sensor you have or if you have an exhaust system with no catalytic converter because you had it removed or Nov 13, 2014 · I read a few posts about using a spark plug anti fouler for the rear O2 sensors and I`m just wondering if this works better than the Big Daddies Garage O2 Defoulers work too! https://amzn. If for some reason they dont work, i have seen guys all over the internet stack them, some drilled out the bottom one and some didnt, either way still way cheaper. How to use a sparkplug antifouler to turn off you Check Engine Light. To do this I intend to use a thing called a "Spark Plug Non Fouler". it has worked and have gotten no CEL's from it. Mechanics Choice Spark Plug Non-Fouler for 1942-1984 Buick, Cadillac, Chevrolet, Chrysler, Dodge, GMC, Hudson, International, Jeep, Nash, Oldsmobile, Plymouth Dec 4, 2007 · Go to your local auto parts store and get a long 18mm spark plug non fouler, drill the end with the small hole out with a 1/2 in drill bit to allow the thimble of the o2 to fit through. $5 Non-Fouler on Oxygen Sensor PASS SMOG P0420 Toyota Corolla Matrix√ Fix it Angel Jul 24, 2010 · Okay, drilled out the non-fouler so the O2 sensor isn't jammed in there so tightly. If you’re wondering whether spark plug non-foulers work on oxygen sensors, the answer is yes. I attempted to eliminate the code by adding space between the CAT and downstream O2 sensor via threading a set of 18mm spark plug non-foulers onto the sensor. Part # 42009 The package brings two and you will need both. Jul 15, 2024 · What Does A Spark Plug Non-Fouler Do For An O2 Sensor? A spark plug non-fouler helps prevent damage to the spark plug and fix spark plug fouling caused by rich fuel mixtures or oil issues. put these on the o2 sensor and reinstall sensor in exhaust. Thread the rear oxygen sensor into the one you just hollowed out, and thread that mess into the other defouler, and thread that into the bung. Apr 30, 2023 · Hey Jim, I had the 2pc non fouler that eventually rusted out, enough to eject the o2 sensor out, leaving the threaded portion in the exhaust manifold. Apr 4, 2023 · Available at your local automotive store. Is this required for this mod as well. ) Does anyone have advice or experience with this problem ? 1998 5. Apr 28, 2025 · In this comprehensive guide, we’ll delve into the importance of spark plug non-foulers, how they work, and provide a detailed guide on selecting the correct size spark plug non-fouler for your O2 sensor. May 28, 2024 · Discover the game-changing solution to your engine's O2 sensor fouling issue with Spark Plug Non Fouler. Find the right Dorman HELP! Spark Plug Non-Fouler for your vehicle at O'Reilly Auto Parts. You've got options like the durable Dorman non-foulers available in both 18mm and 14mm sizes, and the precision-focused Lisle 20540 adapter designed for accurate compression readings. Order Ford F150 Spark Plug Non-Fouler online today. First, verify your vehicle is cool and safely elevated on jack stands for easy access to the exhaust system. what they do it move the o2 sensor out just a little so they only pickup enough gases to give the PCM a simular reading as they would have if the cats were installed. 5 threading and a length of 45mm. Apr 23, 2015 · Some have suggested using a pair of spark plug non foulers on the post cat O2 sensors to move them out of the exhaust stream and that this will eliminate the CEL. People also refer to this as:Defouler exhaustAnti foulerMo Feb 15, 2013 · All pulling the bulb out does is make the light not show up. Learn a genius non-fouler trick to ace your smog visual inspection! Solve P0420 issues and optimize your catalytic converter's performance with this simple DIY hack. o and it didnt work for me at all This is a great "temporary" fix to a catalyst converter that is causing a check engine light on your downstream O2 sensor. Oct 28, 2011 · Im not sure how the anti fouler trick will work with my Tacoma I pretty sure from the YouTube videos I watched that it will only work with the screw in o2 sensor on my truck it's not screw in it is 2 screws and a gasket and the o2 sensor just drops in . Mar 19, 2010 · use a set of spark plug nonfoulers from any autoparts store. Here's how to bypass or trick the O2 sensor into thinking your catalytic converter is working when you have the P0420/P0430 check engine light code. Thus not throwing any codes in the first place. 5 Spark Plug Non Fouler Catalytic Converter Cleaner Check Engine Light Fix Extension 45mm Length (Silver) (Type D) : Amazon. Spark Plug Non Fouler PN 42009 ($4. How does it work? the spark plug non-foulers restrict the flow of gasses getting to the sensor therefore making it think the cats are still there filtering Supplies needed- Nov 13, 2023 · Now, you’re ready to proceed with installing the O2 sensor into the spark plug non-fouler. Apr 8, 2017 · Spark plug anti foulers will have to be slightly drilled out to clear the sensor tip. Side by Side comparision of the orignal and now modified non foulers o2 Sensor May 17, 2024 · Here you will get to know about the best method on how to install spark plug non-fouler in your vehicle. Nov 13, 2013 · One: Go to Advance Auto Parts and buy one of these spark plug non-foulers. Most of them claim to work well and be easy to install. Perhaps something like this? Process: Curious about spark plug non foulers? Find out if they're legit in this video where we discuss their benefits and effectiveness. Here is a Pic of them in the package. Oct 7, 2009 · Then, take a pair of spark plug defoulers (around $. Jul 10, 2019 · About this item 【Heavy Duty Material】: Oxygen sensor adapter made of high quality iron which is high strength and durability to use and never have or corrosion. I saw a post where someone said to drill out the non-foulers with a 1/2" drill bit to make them work. You're still going to have codes, that's what the machine picks up. Anyone had this issue? Any tips? Catalytic converters are not an option and not mandated where I'm at. Screw the O2 sensor into the one you drilled out. Put that one on the o2 then put the other one that is not drilled out onto that and put the sensor back in your pipe. As I understand it the spacing of the O2 sensor and the smaller hole in the non-fouler fools the vehicle computer to thinking the Direct replacement - this spark plug non fouler is designed for easy installation to protect spark plugs from fouling and damage on specified vehicles Ideal solution - this non-fouler preserves spark plug life and is a reliable replacement for an original non-fouler that has failed due to corrosion Durable construction - made from quality components to ensure reliable performance and a long 42 results for "spark plug non fouler o2 sensor spacer" Results Check each product page for other buying options. Read on to learn everything about non plug foulers. -again with a bit of grease install the o2 sensor on the second non fouler. The P0440 is a separate issue with the gas tank evaporative emissions control. Wondering how non-foulers can boost engine performance and cut emissions? Discover the top picks to keep your engine running smoothly. ) You will need the small opening to the sensor to read the "correct" flow. What type of anti fouler will work with our trucks since we don't have screwed in sensors? Jan 3, 2016 · So I've been doing more research on replacing my cats and one of the master techs at my job told me to get spark plug non- foulers and to screw one end into the exhaust system and screw the o2 sensor into the end. your done. Read honest product reviews from real users. i drilled the centers out of the foulers to 1/2 inch and double stacked them and put the o2's in,. 6 and 5. Save on Dorman - Help Spark Plug Non-Foulers - 18mm Gasket Seat 42009 at Advance Auto Parts. Burning oil can cause spark plug fouling. But now, you can buy pre-made "O2 Defouler" on Amazon. Jan 27, 2014 · To elaborate, you buy 2 spark plug non foulers (can be had at autozone/advanced auto) in the "help" brand. What is a Defouler? Spark Plug non-fouler (aka Spark Plug defouler) Software upgrade. (Drill out foulers center hole with 1/2 Drill bit, does not have to be all the way through, drill fouler from the out side inward, enough for the Sep 29, 2017 · Anyone with their cat removed tried using spark plug non foulers to trick the second O2 sensor (screw into O2 plug before sensor)? Or is everyone just turning it off via tuner Aug 10, 2016 · The Dorman 42009 spark plug non-foulers worked great to solve a recent P420 code problem. This is where a […] This trick works most of the time on various vehicles but not all. You remove the sensor, screw this in than screw the sensor in to it. Already replaced the Catalytic Converter and it didn't help. The muffler shop I went to recommended that I do the spark plug non-fouler trick. Aug 30, 2025 · There are many different brands and types of spark plug non-foulers available on the market today. May 16, 2015 · The non-fouler that they were talking about were an o2 sensor non-fouler. com. Defouler Exhaust System Install Track/ Offroad use only (O2 Sensor P0420 P0430) | AnthonyJ350 AnthonyJ350 128K subscribers Subscribe Dec 20, 2018 · 2Pcs O2 Sensor Spacer, M18*1. This spark plug non fouler is designed for easy installation on specified vehicles to protect spark plugs from fouling and damage. Nov 23, 2012 · Hello guys, I need to install non fouler on to o2 sensor for honda odyssey 2005. A spark plug defouler O2 sensor can be a great addition to your vehicle if you have made modifications that affect its air/fuel mixture. Apr 15, 2007 · Second, unmodified non fouler now installed on modified non fouler Original non fouler->Modified non fouler->O2 sensor Fully installed The idea behind it is when you remove the cat the 2nd O2 sensor is going to have too much air reaching the sensor that isnt filtered out, which will make the computer think the cat has gone bad. Nov 7, 2007 · A easy way to do it is to use some 18mm washer seat spark plug anti-foulers, you can get them at any auto parts store. All our Non-Foulers are constructed of high-quality steel for long-lasting durability. Nov 14, 2011 · The usp spacer should be enough. I only used one non-fouler, but here is the how-to for using two, and an explanation of why it works. Buy two of them, drill one out with a 1/2" drill bit. Understanding Spark Plug Non-Foulers A spark plug non-fouler is a device designed to prevent spark plugs from becoming fouled. This is the part I found on forum/youtube (HELP 18mm Gasket Seat Spark Plug Non Foulers 2 Pack 42009). -Ignore-Since the post catalytic converter oxygen sensors is purely for emission Nov 2, 2024 · A spark plug non fouler 02 sensor, also known as an oxygen sensor spacer or extender, is a small device that is installed between the exhaust manifold and the oxygen sensor. 2L. Go buy some beer and celebrate with all the money you saved. Buy me a coffee! ht Mar 24, 2010 · Parts required 2 Spark Plug Non-fouler adapters 18mm w/gasket (Napa Part 7302442) 2 come in a pack. Sep 23, 2022 · Hi All - I have the annoying P0420 code pointing to the catalytic converter. When finished this is what it will look like. Does anyone know which size is appropriate for the O2 Jan 2, 2011 · Those spark plug non-foulers are simply used as a spacer for the rear O2 sensor to "help" it get the proper emissions readings so you do not have a check engine light. Aug 31, 2003 · It involves using spark plug non-foulers to space the O2 sensor out of the exhaust path and prevent the CEL. As I understand it the spacing of the O2 sensor and the smaller hole in the non-fouler fools the vehicle computer to thinking the Spark plug non foulers protects plugs from fouling and damage. What are you guys using to help with 420/430 codes? I’ve tried a few non foulers but they’re either too short to accommodate the sensor or too long to fit in the space. Nov 16, 2012 · It is apparent that using the non-foulers do interfer with the metering of the aft sensor on each back. Nov 18, 2007 · The purpose of this thread is to discuss the modification of the O2 sensor by using spark plug non-foulers as spacers to bring the o2 sensor probe away from the exhaust gases. The spark plug non foulers trick the o2 sensor into thinking its inside of a cat I believe. use a bit of grease on the threads to help it go in. 0 Mercury Mountaineer 2016 F-150 Lariat Super-crew 1978 F-150 Aug 28, 2012 · One of the non foulers will have to be drilled out just slightly larger than the o2 sensor. Place your order online and pick it up at your local store for free. I wonder if I could use some sort of 'elbow' to increase the clearance. They are made of high-quality iron and are designed to increase the distance between the oxygen sensor and the exhaust system What does this mod do? this mod tricks your O2 sensors into thinking that your catalytic converters are still there so you do not throw a code when you cut them off. Buy online for free next day delivery or same day pickup at a store near you. With that in mind, people still look for ways around the high cost of replacing a catalytic converter. It acts as a spacer, lifting the sensor slightly out of the exhaust stream. I read some of the other posts about O2 simulators and spark plug non-foulers. What are you trying to do anyway? Hey guys in this video I show how to fix a catalytic converter deficiency code such P0420 P0421 P043O P043. Price and other details may vary based on product size and color. to/3Ur9aH4If you want the spacers, use Google. This has worked on EVERY car I've tried it on - Hondas, Toyotas, Various Subarus. 0 engine). Wholesale warehouse for performance and OE exhaust systems and components. i have high flow cats and an x pipe and it kept throwing the codes,. Installing a spark plug non-fouler for your O2 sensor demands careful attention to detail to ascertain peak performance. Apr 23, 2010 · 18mm Spark Plug Non-Fouler (such as Dorman #42009 which can be had on Amazon for a few bucks) Note: The above non-fouler will only work for bank 1. Follow the easy steps to install, remove, and reassemble the non fouler and the sensor. Jan 11, 2014 · It states that you put the non fouler on the third o2 sensor ( the one after the cat) I just wanted to be sure you put it one the third o2 sensor. To check the compatibility, please provide us with the year, make, model and engine size of your vehicle. It was mentioned that one needs to drill out the anti fouler for the O2 to fit (I havee allready bought the parts and confirmed this). ca: AutomotiveThis Keenso product is a lot of 2 oxygen sensor spacers with M18 x 1. We have the best Spark Plug Non-Fouler for the right price. 50 from Autozone, Advanced) and hollow one out with a 1/2" drill bit. I tried 1 and then 2 non foulers and now just 1 with bronze wool inbetween the O2 sensor. Feb 3, 2025 · This article delves into the intricacies of installing a spark plug non-fouler on an O2 sensor, providing a comprehensive guide for car enthusiasts and DIY mechanics alike. Reduce CEL with Blox Racing’s O2 sensor defouler. Direct replacement - this spark plug non fouler is designed for easy installation to protect spark plugs from fouling and damage on specified vehicles Ideal solution - this non-fouler preserves spark plug life and is a reliable replacement for an original non-fouler that has failed due to corrosion Durable construction - made from quality components to ensure reliable performance and a long Ignite your curiosity about the 5 best spark plug anti-foulers and discover how they can boost your engine's performance effortlessly. Nov 29, 2005 · you actually need 2 foulers. But everyone winks and nods because, if that other purpose were acknowledged, the party would be over. Feb 6, 2021 · I'm thinking of adding a spark plug non fouler to the 2nd O2 sensor to "hide" the 0420 code. 5 thread pitch, 45mm length Check Engine Light Adapter for usage of veichle spark plugs spacer This Dorman - Help Spark Plug Non-Foulers - 18mm Tapered Seat (Part # 42002) include 2 spark plug non-foulers and the thread size of 18mm. Discover how it can improve your vehicle's performance today! Find helpful customer reviews and ratings for Dorman Spark Plug Non-Fouler 42002 at AutoZone. Buy online, pick up in-store in 30 minutes. Oct 18, 2008 · You need to make sure you ask for a "Spark Plug Non-Fouler" & don't mention anything about CEL issues or using it to space out your O2 sensor. Mar 18, 2015 · The cheapest way to fix this is to slightly back the 02 sensor out of the direct stream of the hot exhaust stream. 4 Engines, Swivel Head Socket, Chrome Vanadium Steel, Posi-Grip for High Torque The O2 sensor spacer/extender/ non fouler did its job and cleared the bad cat code, but now the oxygen sensor readiness code isn’t resetting advice? O2 sensor works fine is the sensor too far away ? Dec 8, 2012 · So I've used 2 spark plug non-foulers on the REAR o2 sensor (1 untouched screwed into the exhaust then 1 drilled out to allow the rear o2 sensor to thread into it (2 have to be used together to eliminate the cel)) for many years & get no CEL + all systems are "ready". stuff the unmodified piece with 0000 guage steel wool and insert themodified one on top to hold it down. You could try an angled one so that the sensor wires won't be squashed against the heat shield. Jul 17, 2016 · The thread discusses using spark plug anti-foulers to space out O2 sensors when running without catalytic converters, effectively tricking the computer into thinking they are still present. Mar 19, 2014 · their called spark plug defoulers, you have to drill them out to fit the sensor tip. Apr 26, 2010 · Ok so I am going to try the anti fouler trick. Direct replacement - this spark plug non fouler is designed for easy installation to protect spark plugs from fouling and damage on specified vehicles Ideal solution - this non-fouler preserves spark plug life and is a reliable replacement for an original non-fouler that has failed due to corrosion Durable construction - made from quality components to ensure reliable performance and a long Aug 30, 2020 · I believe the link to the non-fouler above is for non-fouler that won't work for this O2 sensor. Sparkplug non-fouler isn't working for check engine light I don't have catalytic converters on my 2015 mitsubishi mirage 1. bore one out completely so the o2 sensor can fit into it and leave the other one as is. Interesting I found a previous comment where Olrowdy recommends using not one but two of these to really move that O2 sensor quite a distance away. When considering Non-Foulers for your vehicle, it's essential to evaluate several key factors to ensure optimal performance and compatibility. No, no, no! You do not need to drill anything! May 18, 2020 · The use of a spark plug non-fouler messes with the reading the downstream sees and makes it think the converter (or lack thereof) is operating within desirable efficiency limits. On my next one I will work on getting some pics. Dorman Products - Aftermarket Auto Parts & OE Solutions - 42008 : Spark Plug Non-Foulers - 14mm Tapered Seat. Normally 2 spark plug anti foulers is enough on a stock pipe, so maybe just one? It should be the same thread as the oil drain plug, and your going to have to drill it out. Link to photo instructional and part below. Improve exhaust flow, efficiency, and engine health with this easy-to-install performance fix. I can’t find a 90 degree non fouler. (But not drilled all the way through. Do Spark Plug Non-Foulers Work on O2 Sensors? Yes, spark plug defoulers can be used on O2 sensors, especially to circumvent issues related to catalytic converter efficiency codes. In the picture above, there are 3non-fouler as reference only to help illustrate what a non-fouler looks like from different perspectivesNOTE: You might need to modify the long spark plug non-fouler (P/N 42002) if your 02 sensor's tip doesn't sit properly inside the spark plug non-fouler. That's what I did years ago. Three: Mar 16, 2012 · Spark plug non-foulers = O2 simulators not needed! I know this has been talked about before. Mar 6, 2008 · -Spark Plug non-fouler (aka Spark Plug defouler)-By installing the spark plug non-fouler, you are in essence moving the rear 02 sensor out of the direct flow of the exhaust stream/flow. First, determine the specific application required for your vehicle's exhaust system, as Non-Foulers are typically used to reduce check engine light issues caused by sensor misreadings. They happen to be the same thread as the O2 sensors. Legend has it that if you use a spark plug non fouler you can trick your engine computer Jul 7, 2022 · The purpose of the non-fouler is to act like a sleeve for the spark plug and keep out oil. By protecting the sensor from contaminants, adjusting its location, and extending its lifespan, the non-fouler ensures accurate readings and optimal engine performance. One of these ways is to use sparkplug non-foulers or de-foulers. Jul 25, 2012 · -use a 1/2" drill bit to open up the spark plug non fouler and screw it on the converter. The correct size ensures optimal performance and prevents sensor issues. -Farmers in my area use them. Amazon. Gas vapor flows through a small hole in the spark plug non-fouler to ignite and move the engine. There are "02 simulators" for sale out there. I found there is 14mm and 18mm non foulers at Autozone. Simply use the non fouler as a spacer between the o2 sensor and the o2 bung on the down stream location. Jun 1, 2015 · Second, unmodified non fouler now installed on modified non fouler Original non fouler->Modified non fouler->O2 sensor Fully installed The idea behind it is when you remove the cat the 2nd O2 sensor is going to have too much air reaching the sensor that isnt filtered out, which will make the computer think the cat has gone bad. Step #1 Disconect the negative terminal on the battery, then Take ONE & only one of your 2 non-foulers and Drill out the Top end with the 1/2 inch drill bit untill it goes all the way through. To install, you'll likely need two anti-foulers per O2 sensor, drilling a 1/2" hole in one of them to accommodate the sensor head. com: o2 sensor foulerCheck each product page for other buying options. 99) You now need to drill out 1 of the non foulers using a 1/2" drill bit. Jun 22, 2002 · The truck runs fine. However, the ECU also uses the readings from the rear oxygen sensor to "calibrate" the readings from the front oxygen sensor. This causes less oxygen to be sensed by the sensor tricking the fuel computer into thinking the air:fuel mixture is richer than it is. Threads made with dedicated tool, accuracy and repeatability 【Function】: M18*1. Spark plug non-foulers have definitely been used with spark plugs, but these days, they have another, markedly different purpose. However, because I couldn't use both non-foulers for each bank (due to sensor clearance) the installation had no effect. Free Same Day Store Pickup. It is engineered for durability and reliable performance. This is where a spark plug non-fouler comes in handy. Jul 5, 2024 · In this article, we’ll guide you through the simple yet effective method of using a spark plug non-fouler to address O2 sensor fouling. Mar 5, 2020 · Have the P0420 code and check engine light on. Remember to consider compatibility, type, durability, and brand reputation before making a purchase. Witch one is good for 2005-2010 honda odyssey ? And which size wrench is for o2 sensor ? Or I need to rent special oxygen sensor socket ? Nov 26, 2012 · The ECU compares the readings from the rear oxygen sensor to the readings from the front oxygen sensor to determine the efficiency of the catalytic converter. one to plug into the header, another that that will fit the o2 sensor and that has an end that has a small hole at the end of it so that the exhaust fumes can hardly get to it. I want to use Spark Plug Non-fouler adapters over the O2 sensor to pass inspection, but I notice they come in different sizes. This simple trick will pull the O2 sensor away from the exhaust flow and make your car think the Catalytic converter is Jan 11, 2020 · 2015 - 2020 Ford F150 - P0430 and P0420 Fix - For those who have modifications, you will need to install Spark Plug Non-Foulers (18mm size) on rear 02 Sensors (5. Apr 13, 2012 · No fouler on the pre-cat O2, fouler installed on the post-cat O2. Aug 6, 2024 · The spark plug non-fouler is an essential component that plays a vital role in the proper functioning of the O2 sensor. When it comes to maintaining your engine's performance, choosing the right spark plug non-foulers can make all the difference. Sometimes, it can give incorrect readings due to fouling. Parts are just part of what we do. com usually has them, though sellers change often. Dorman 42004 Spark Plug Non-Foulers - 14mm Gasket Seat Long Reach Compatible with Select Models, 2 Pack Add to cart Overall Pick Shop for Dorman - HELP 18mm Gasket Seat Spark Plug Non Foulers 2 Pack 42009 with confidence at AutoZone. tighten down 5. Jun 5, 2013 · Third, screw the two non-foulers together with the O2 sensor screwing into the back one. Has anyone ever tried this with any luck of getting rid of a catalytic converter code? Showing spark plug non-fouler with catalytic converter removal on our 2001 Land Rover Discovery 2. I tested it myself and saw immediate results! Try it now. Oct 5, 2011 · Standard size, 18mm spark plug thread is the same. Take care to screw the O2 sensor into the non-fouler, ensuring a tight fit without putting excessive strain on the components. Shop Now at the Guaranteed Lowest Price! Jan 4, 2010 · Two days after installing the anti-foulers under the rear O2 sensor of 2000 OBW with 165k miles on it, I still don't have a CEL! I've owned the car for almost 2 years and this is the second longest period of time I've had no CEL (the longest one was right after my second catalytic converter replacement and that lasted about 2 weeks). com: o2 sensor spacerOEMTOOLS 33625246 7/8" (22MM) O2 Sensor Wrench, Oxygen Sensor Wrench for Ford 4. (I'm not going to explain it here, if you don't know what I'm talking about I'll leave it up to you to research it. Just install them in between the o2 and bung, make sure the sensor cage on your o2 clears the bore of the anti-fouler or you may need to drill it out slightly. I've never researched them but they're still only going to work (if they do at all) on the downstream locations. Mar 17, 2010 · NOTE: The package only comes with 2 non-fouler. My extractor adapters were limited in function, hence removal of the exhaust manifold was necessary. Check out free battery charging and engine diagnostic testing while you are in store. Searched and searched all over the net, found some very interesting stuff, but most of it pertained to "tuning" the amount of oxygen the sensor sees, causing the ECU to recognize a "rich" condition and lean out the mixture and boost fuel Sep 19, 2014 · You raise the downstream o2 sensor up out of the exhaust stream using a pair of spark plug anti foulers (video on YouTube, can be purchased at local auto parts store, cheap). Allready replaced the rear O2 and was good for about a month. After drilling out one of the non-foulers with a 1/2 inch Direct replacement - this spark plug non fouler is designed for easy installation to protect spark plugs from fouling and damage on specified vehicles Ideal solution - this non-fouler preserves spark plug life and is a reliable replacement for an original non-fouler that has failed due to corrosion Durable construction - made from quality components to ensure reliable performance and a long Mar 5, 2025 · To find the right size spark plug non-fouler for an O2 sensor, you need specific information. Dorman 42002 Spark Plug Non-Foulers - 18mm Tapered Seat Compatible with Select Models, 2 Pack in Spark Plugs. Rented an O2 sensor wrench from autozone and was even able to get the rear sensor off without lifting up the car at all (with a hammer and lots of PV Blaster). Get the Best Performance with Dorman Products Spark Plug Non-Foulers 18mm 42002 parts at JEGS. This trick works most of the time on various vehicles but not all. so, o2 sensor->1st plug fouler->2nd plug fouler->header -)Signal Soldier (- Jun 5, 2024 · I tested the Spark Plug Non Fouler O2 Sensor and was amazed by its efficiency. If you do, it will confuse the parts guy & they won't be able to find the part! Jun 23, 2010 · I found this fix on a a different forum involving a spark plug defouler, drilling it out, and attaching it the rear O2 sensor. -do the same and thread the 2nd non fouler onto the first one after you've extended it. doxhh belvo krvauq ngvdv jbdgvoqe poibq noqnggd mrcadga ryng dtbyifi isxd wqpfg ibjy nwlf lzgpuc