The engine light will set when the cat is only about 95% efficient instead of 100%. That's why I've used them on my cars. If the code comes back with the spacer on, then the cat is very inefficient and needs to be replaced
Dude i had to watch 10 videos to get to your video…all I wanted to know was where it needed to be installed, before or after Cat and you are the only one that said it lol.
You are the only one that said after cat. I installed mine before cat and thought the thing was junk. I'm gonna try after the cat and see what happens. Thanks!
You're welcome. Putting it before the cat can actually make the engine run bad as it's not getting the right o2 signal to adjust air and fuel. Good luck!
I have been chasing a p0420 fault on my truck for the better part of 4 months, hoping it wasn't the catalytic converter. After replacing everything that could cause the fault, I've come to the realization that I need a new cat. But now that I know these things work, I'm just going to gut it and throw one of these in. Thanks for the help.
Don’t gut it or it won’t work. This only works if the gasses coming out are under regulations this makes it think it’s much better. If you gut it it won’t work because the system will see the number are way off
I live in NYC my cat was stolen on a public street at 1pm in traffic,and I installed an aftermarket cat which failed after a year,So I put on one piece of 02 sensor which got rid of my codes still working after 2 years,Never met a mechanic who even checked or cared,as long as your car passes emissions you get your sticker!
My situation is different and I hope this works. I live in PA and i bought a used Buick Enclave that happens to be a ULEV CA car. I get a P0420 code. Just found out all three cats were replaced. I still get the code because the cats that were installed were NOT the ULEV CA cats. So hoping that installing a spacer gets the downstream sensor out of the exhausts direct flow, gives me a better (lower) reading and tricks the ECM to think that everything is good. Because those cats are like $1000 each to replace
Mine too. I got scammed. I’m in California and I had both my cats replaced on my Lexus. Apparently they did not use CA ULEV cats, but instead used aftermarket cats which are not legal in California. And now the shop that replaced them is out of business lol so I’m screwed. Luckily I was Able to permanently register my vehicle in Montana which does not require smog, however I still want to turn off the CEL light.
Hell yeah! Even though I know its not a big deal seeing the check engine light always bothered me, and spending $800+ for new cats on a beater makes no sense, these are lifesavers.
Put a little piece of electricians tape on the dash, over the engine light. It's even EASIER, and WAY cheaper than the spacers.... It literally costs .001 cent and about 15 seconds to do
Used a spark plug extender, drilled out the bottom to about 1/2", had to use a small pipe wrench to initially loosen o2 sensor as removal socket kept slipping. Filed off rough edges. Seems to be working. NO Light....
I have 2 catless downpipes leading to a straight pipe exhaust. No cats no resonators.. will this work for passing emissions? They don’t actually inspect the motor, they just plug the OBD2 diagnostic in
Awesome man thanks for the info. I have a question. Will this work if I have deleted the cats? I replaced my cats less than two years ago with universals and I am having codes thrown.
Reading all the comments from people not knowing whether to install this before or after the cat got me 🤣.. Some real special people out there. What I wanted to know is would something like this help prevent a check engine light with an aftermarket downpipe that is bigger and has a high flow cat.. My turbo keeps melting OEM cats, I got two replaced under warranty, now my warranty is expired I'm thinking I might just put a 3'' downpipe with a high flow cat but I don't want any CEL's because that might trip the engine into limp mode.
I can verify that these do indeed work. Check engine light goes off and stays off. As far as 'getting away with it' goes, I can't speak for California, but in New York all inspectors do is plug into the OBD2 port. If there's no persistent check engine codes, it passes. Mechanics don't care about anything else..
@@disturbator Only downstream/after the cat. The upstream sensor measures your air/fuel ratio. If you mess with that signal your car won't run right. The second O2 sensor measures the activity of the catalytic converter. You want the spacer there so your car thinks the cat is fine even if it isn't. It's a hack job but it can help you pass inspection if they don't look to closely. If your cat is clogged up then it can lead to burned up valve seals because of the increased backpressure. If your car burns a lot of oil and you have a faulty cat then that's what's probably causing the issue. It's a cat and mouse game to find that fault. Were you burning oil for some reason and that's why you cat clogged up or the other way around? Not nice to diagnose these issues and generally a lot of work (and money).
😢@@schwuzimy cats are removed so now i have cat error of course. The only cat that is left is a small one before silencer under the car. My car is hyundai santa fe 2.7 v6. It had 3 cats originally 😂😢My car is a v6 runing on lpg. Im hoping that the spacer will remove cat error. And yes my car u burning a little bit oil and i can see oil on back valve cover seal... Can that small cat be an issue?
@@disturbator It depends if your one remaining cat is clogged or not. Why did you leave that one in? There is also 90 degree/right angle spacers that might better suit your needs. They can help when there is no cat at all. The permanent solution would be to have your ECU reprogrammed by a tuning shop so the errors are gone. Though that's way more expensive than one of these little spacers.
you said at the end that it won’t pass in CA or NY what would be the reason it doesn’t pass in these areas ? and is it worth the risk to take it to a random smog place ?
@wr_replayzz5937 if the cat is below efficiency enough to set a engine light, it's possible the emissions will be above a threshold for it to fail emissions. It's not a guaranteed fail
My car they recommended to do this (I'm getting a 90 degree angle) and they said to try it due to the cat being a new one (they don't make the originals anymore) but it would confuse the sensor and ECU MIL unit to think there is a problem with the cat, however doing my MOT in the UK where they do emissions checks, they stated that the cat was actually fine and the O2 sensor just couldn't understand what was happening. So I'm hoping when I do this, it fixes the issue.
Great video. I bought one today as I have p0430 on my Sienna. I know its for Bank 1 Downstream but not sure which sensor. Is it for Sensor 1 or Sensor #2 Downstream?
I have a 2014 1500 chevy silverado. I have no cat, just a y pipe. I replaced o2 sensors because I kept getting codes for it. Once I replaced them I got a P0430 code. Mind you I also have a k&n cold air intake on it. I was recommended these 02 spacers but I'm not sure what to do.
Most cars have the same size. You can Google your car and type o2 thread pitch size for more info. Most o2s are also the same thread as standard spark plugs, so you can use a defouler instead
My check engine light came on my 07 FJ as well, and it's the 02 sensor. We're did you end up getting this spacer from and did you have to get 2 for both sides for the back of the converter
@@rudysalas6 If your codes are anything other than p0420 or p0430 this wont fix your problem. and you only need to get 1 per side that sets the code. P0420 is bank 1, 430 is bank 2.
Thanks for the video. Will this solve the related issues with cat malfunctioning or will it just keep the check engine light off? (Car shaking, trouble accelerating, etc)
Can people from California report in the comments if this worked for them or not recently and on newer vehicle's? We can get some stats going and also if the smog tech guy is physically checking under the vehicle for these, thank you
Works perfectly, if the smog shop looks under the car then remove it right before you go get the smog it’ll still pass because the smog monitors are completed, Gotta take it off right around the corner from the smog shop though lol
If they work in Maine, they WILL work in Cali. You people are not THAT special there... I mean, I KNOW you guys can get cancer from certain chemicals that the rest of us in the 49 other states can NOT, but an O2 spacer not working in Cali? NO...
@@racingdreamz8021 Just went to do my smog check with the anti foulers and the guy caught it. Now my inspection report says "tampered".. might have to dump another $800 into my old truck. Super bummed 😮💨
@@rodrigob.9294 The front 02 sensor does that function. It lives in the exhaust manifold. This rear 02 sensors job is to make sure that the cat is working properly. It has no influence regarding how the engine runs.
Thanks for the video. Have a question so if this spacer works is it the sensor thats bad or is it the converter? I have a 07 FJ crusier that the p0420 code popped up
Whatsup man, i replaced my cats but the sensor is still reading rich, maybe another fault but i have a p2099 and p2097, but its reading rich on the downstream, thinking of putting these on so i can pass the inspection, lets hope for the best
P2099 and P2097 mean that your system is running LEAN, NOT "rich", and that the ECU has commanded as far RICH as it is allowed to go, and the exhaust is STILL too lean. The spacers will do NOTHING for those codes, and WILL just make the problem worse. Fix your exhaust leaks, and that will take care of the codes. ALSO make sure that your fuel filter isn't plugged, and that you have enough fuel pressure.
Hi, do you know if this works on newer vehicles? I know their computer systems are a lot more complex. It worked beautifully on my old 96 4Runner but do you think these would work anything that are 2015 or newer?
I added two extenders to my downstream brand new 02 sensors . My p420 code came back but I now have a p0057 code. All wiring looks good and the connect is nice and tight. Can the spaces cause this code?
PLEASE ANSWER BACK!!!!! So I put a 4-1 header on my car on my 04 Mitsubishi lancer Ralliart it only has one cat on this car that's below the shifter the header and Cat-Back exhaust system eliminated that cat so of course I have the PO420 code...... I've never had to use one of these on the Honda's that I have modified they're not as picky at least the older 90s ones when you eliminate the cat BUT MY QUESTION IS... Is it better to go with one like the style you have that's just straight up and down or I've heard that you should use the 90° ones that are L-shaped or j-shaped What's your opinion on those???????
Hello, I have a 2007 Toyota Avalon with a new Doorman aftermarket catalytic converter I installed about 2 years ago, I just got a P0420 code this week. So I doubt it's the converter,... In any event, I'd like to buy one of these are they universal? Thanks. BTW...just subbed
@@BigBensCarsAndCycles Will two of the sensors that were featured in this video be able to be stacked? I had purchased two and may try that next if I need to
they are getting ridiculous building cars like most you cant even get a cheap after market cat has to be some special 600 dollar cat, they tried to tell me was the case with mine cause it was plugged, went home cut it off smashed the cone out of it and installed one of these. been fine ever since
After upgrading my exhaust manifold on my honda vtec, my check engine light sonetimes turns on, and when its off the car struggles to accelerate at low rpms but it fine at high rpms but when the check engine light is on then the car drives normally but i don't think vtec kicks in, any advice? Will this work? Apparently the car does run lean at low rpm sowould that mean it only needs a tune?
Does this work if you don’t have cats I have a 90 bronco that I deleted the whole emission system, including the smog I have zero cats on my exhaust system but I do have mufflers
Will this work on a car that’s fully catless? I got a 2008 ISF that has no secondary cats and no primary cats with PPE headers. The only codes I’m getting is PO136 and PO137 and that’s relating to B1S2. If these work I’m assuming I just need to put it on the primary ones?
I put it on my downstream 02 sensor and I’m getting a check engine light for the 02 sensor circuit not working properly any idea on what could cause this I haven’t checked the voltage but the sensor isn’t broken or damaged either
I’m having this issue with my 2013 workvan, hate having the check engine light keep popping up. Where were you able to find on of these spacers? I can’t seem to find anything on eBay or Amazon.
Hi, I have a question I have the p0430 because my cat is dying, i heard that you have less power if this code shows up. Does the spacer also bring the power of the car back or is just the check engine light gonne
QUESTION I HAVE A p0420 code as most ppl I’ve read you said rear is it rear downstream that will correct my issue and I’m assuming you only need 1 right??
Hello I have Acura tl 2012. I am getting P0430 low threshold bank 2. Should I install the spacer in front sensor? Is it sensor 1 or 2 I would appreciate help thx
gonna be doing one of these on my girlfriends car. We've replaced the cat and both sensors and still throwing that code at us so I hope this sorts it. Probably won't =D
I installed mine yesterday and ran it for about 30 miles snd still hasn't gone off. Still hot the light and when i exit off the freeway and brake, it sputters like it wants to shut off
I bet you've got something more going on there, good luck to you! Oh, did you install the spacer downstream of the cat or before it towards the engine? It goes on the back
I tried it on my 2006 Nissan Armada. The engine light stays off longer than normal but the end result is that it DOES NOT work. Originally, it took 8-10 miles for the check engine light to come on. With the O2 spacers, between 15-30 miles the check engine light come back on. Replace a catalytic converter which it will be expensive is the permanent fixed.
If i have an 02 sensor code because the 02 sensor isnt working is it safe to install this instead of replacing the 02 sensor or will the computer not get the right reading of oxygen it needs to send to the engine?
Whats the correct fitment for honda accord 2008? I saw these on Ebay but not sure of the size, so i cannot buy it as i dont know the size lol.. please help.
What if your cat is not bad, just aftermarket exhaust causing the light? You should get away with emissions testing as long as it is working correctly right?
HELLO EMERGENCY, I have a old 1998 Volvo S90 with a rattling cat and i know the cat comb has gone bad, how can i delete my clogged catalytic with out affecting the air / fuel ratio???
You can remove the exhaust from the rear of the cat and knock loose the comb with a hammer and pry bar, then rev the engine without the exhaust to blow it out
@@BigBensCarsAndCycles Okay sorry if im bugging lol but just to be clear, I open unbolt my exhaust if possible and hollow out my cat till theres nothing and just bolt it back on with the O2 spacer on the rear o2 correct? and leave the front o2 without spacer correct…?
@@BigBensCarsAndCycles Po420 cat below efficiency Bank 1. I put it down stream with new OEM sensors. Tried cataclean twice. It worked two years ago and then the light came on a day after I passed emissions
@krakenhits1587 you can look up how to wire a resistor into the rear o2 wiring to get rid of the code. Or buy a cheap new cat for the car and install the spacer on that (because a cheap cat will trip p0420 soon after - but with a spacer it shouldn't come on)
So I don’t have a catalytic converter I was getting code P0054 and P0060 so I put the same spacers on the downstream sensors and I haven’t got a check engine light but I still keep getting the same codes. Only once instead of twice, so I was getting P0054 twice and P0060 twice is that normal
You'll have to clear the code and drive it until the monitor completes. If the code doesn't come back, you're good. If it does, then your cat is VERY inefficient
Some are longer and have 90 degree angles to further stabilize the o2 signal. The one shown in the video should be good enough though. You likely don't want too long or angled of one, as it may lower the signal too much and set a signal code (possibly)
thanks, was wondering about the one i'd gotten from china (temu actually) that looks almost exactly like that. the mechanic who replaced my oxygen sensors (more than once) & cat after the theft (what a major pain!) says he's tried spacers on cars before w/o them working, but possibly these units are better. hoping at least, as i’m so sick of having that code & want to trade in my honda.
my cat is clogged and rattles at cold starts, is it possible to cut it out and straught pipe with a spacer on the back o2 ? or would that affect my gas milage?
What about the environment 🤔 😕???
The engine light will set when the cat is only about 95% efficient instead of 100%. That's why I've used them on my cars. If the code comes back with the spacer on, then the cat is very inefficient and needs to be replaced
is this a joke??
what about my wallet
Are you fkn kidding?
what????? LUL
Dude i had to watch 10 videos to get to your video…all I wanted to know was where it needed to be installed, before or after Cat and you are the only one that said it lol.
I'm glad the video helped!
Obviously after lol
@CorbLowIII how is that obvious to someone that doesn't know what they're doing?
I had to watch 4 years and 1000+ videos to get to this .
@@CorbLowIII Obviously people are born with that knowledge. LOL!
Not all people are clever or understand where they go. I’m so glad you made this video explaining where they fit thanks again 👍👍
You are the only one that said after cat. I installed mine before cat and thought the thing was junk. I'm gonna try after the cat and see what happens. Thanks!
You're welcome. Putting it before the cat can actually make the engine run bad as it's not getting the right o2 signal to adjust air and fuel. Good luck!
I have been chasing a p0420 fault on my truck for the better part of 4 months, hoping it wasn't the catalytic converter. After replacing everything that could cause the fault, I've come to the realization that I need a new cat. But now that I know these things work, I'm just going to gut it and throw one of these in. Thanks for the help.
You're welcome. Thanks for watching. It should fix it
Don’t gut it or it won’t work. This only works if the gasses coming out are under regulations this makes it think it’s much better. If you gut it it won’t work because the system will see the number are way off
I live in NYC my cat was stolen on a public street at 1pm in traffic,and I installed an aftermarket cat which failed after a year,So I put on one piece of 02 sensor which got rid of my codes still working after 2 years,Never met a mechanic who even checked or cared,as long as your car passes emissions you get your sticker!
My situation is different and I hope this works. I live in PA and i bought a used Buick Enclave that happens to be a ULEV CA car. I get a P0420 code. Just found out all three cats were replaced. I still get the code because the cats that were installed were NOT the ULEV CA cats. So hoping that installing a spacer gets the downstream sensor out of the exhausts direct flow, gives me a better (lower) reading and tricks the ECM to think that everything is good. Because those cats are like $1000 each to replace
Mine too. I got scammed. I’m in California and I had both my cats replaced on my Lexus. Apparently they did not use CA ULEV cats, but instead used aftermarket cats which are not legal in California. And now the shop that replaced them is out of business lol so I’m screwed. Luckily I was Able to permanently register my vehicle in Montana which does not require smog, however I still want to turn off the CEL light.
Do you need to put the spacer only at downstream sensor or on upstream and downstream?
Thank you quick and to the point 👉
You're welcome!
Hell yeah! Even though I know its not a big deal seeing the check engine light always bothered me, and spending $800+ for new cats on a beater makes no sense, these are lifesavers.
Put a little piece of electricians tape on the dash, over the engine light.
It's even EASIER, and WAY cheaper than the spacers....
It literally costs .001 cent and about 15 seconds to do
how it is holding up after almost a year? how many miles have you done with them on in total? any issues?
thank you for such an informative video :)
You're welcome. Still no check engine light. 20k miles (us)
Tip: Make sure everything fits tight. Don't let air into the sensor, which might trip a code.
Used a spark plug extender, drilled out the bottom to about 1/2", had to use a small pipe wrench to initially loosen o2 sensor as removal socket kept slipping. Filed off rough edges. Seems to be working. NO Light....
I have 2 catless downpipes leading to a straight pipe exhaust. No cats no resonators.. will this work for passing emissions? They don’t actually inspect the motor, they just plug the OBD2 diagnostic in
Awesome man thanks for the info. I have a question. Will this work if I have deleted the cats? I replaced my cats less than two years ago with universals and I am having codes thrown.
It should yeah
No, it will not
Duuuuuuuuude! You Rock!
Cheers from a Land Rover enthusiast in the UK! 🇬🇧
Reading all the comments from people not knowing whether to install this before or after the cat got me 🤣.. Some real special people out there.
What I wanted to know is would something like this help prevent a check engine light with an aftermarket downpipe that is bigger and has a high flow cat..
My turbo keeps melting OEM cats, I got two replaced under warranty, now my warranty is expired I'm thinking I might just put a 3'' downpipe with a high flow cat but I don't want any CEL's because that might trip the engine into limp mode.
Hi! Yeah I think that would be good to prevent that light.
I can verify that these do indeed work. Check engine light goes off and stays off.
As far as 'getting away with it' goes, I can't speak for California, but in New York all inspectors do is plug into the OBD2 port. If there's no persistent check engine codes, it passes. Mechanics don't care about anything else..
Do you need to put the spacer only at downstream sensor or on upstream and downstream?
@@disturbator Only downstream/after the cat. The upstream sensor measures your air/fuel ratio. If you mess with that signal your car won't run right.
The second O2 sensor measures the activity of the catalytic converter. You want the spacer there so your car thinks the cat is fine even if it isn't.
It's a hack job but it can help you pass inspection if they don't look to closely.
If your cat is clogged up then it can lead to burned up valve seals because of the increased backpressure. If your car burns a lot of oil and you have a faulty cat then that's what's probably causing the issue. It's a cat and mouse game to find that fault. Were you burning oil for some reason and that's why you cat clogged up or the other way around? Not nice to diagnose these issues and generally a lot of work (and money).
😢@@schwuzimy cats are removed so now i have cat error of course. The only cat that is left is a small one before silencer under the car. My car is hyundai santa fe 2.7 v6. It had 3 cats originally 😂😢My car is a v6 runing on lpg. Im hoping that the spacer will remove cat error. And yes my car u burning a little bit oil and i can see oil on back valve cover seal... Can that small cat be an issue?
@@disturbator It depends if your one remaining cat is clogged or not.
Why did you leave that one in?
There is also 90 degree/right angle spacers that might better suit your needs. They can help when there is no cat at all.
The permanent solution would be to have your ECU reprogrammed by a tuning shop so the errors are gone. Though that's way more expensive than one of these little spacers.
will this work in Utah? They do emissions testing, but I don't believe they do a physical inspection. Threw this on, and code not showing anymore.
you said at the end that it won’t pass in CA or NY what would be the reason it doesn’t pass in these areas ? and is it worth the risk to take it to a random smog place ?
@wr_replayzz5937 if the cat is below efficiency enough to set a engine light, it's possible the emissions will be above a threshold for it to fail emissions. It's not a guaranteed fail
My car they recommended to do this (I'm getting a 90 degree angle) and they said to try it due to the cat being a new one (they don't make the originals anymore) but it would confuse the sensor and ECU MIL unit to think there is a problem with the cat, however doing my MOT in the UK where they do emissions checks, they stated that the cat was actually fine and the O2 sensor just couldn't understand what was happening. So I'm hoping when I do this, it fixes the issue.
@AnonymousCaveman if thr code is p0420 then the spacer should fix that
Great video. I bought one today as I have p0430 on my Sienna. I know its for Bank 1 Downstream but not sure which sensor. Is it for Sensor 1 or Sensor #2 Downstream?
I clean my sensor with gasoline ones per year and I do not remember when last time it pop up again. My mileage 170,000 miles
So with race headers, do you put it on the downstream or upstream? Like coming out of the engine , the first one or the 2nd one?
Upstream needs to be the proper installation. Downstream is where you will use this spacer.
You can't put headers on a Honda 😂😂
@@TheChevynovassthis is for a 911
I have a 2014 1500 chevy silverado. I have no cat, just a y pipe. I replaced o2 sensors because I kept getting codes for it. Once I replaced them I got a P0430 code. Mind you I also have a k&n cold air intake on it. I was recommended these 02 spacers but I'm not sure what to do.
The rear o2 spacers should help get rid of your P0430
Not if the cat is completely GONE they wont....
How do we know what size we need to order to fit our specific o2 sensor?
Most cars have the same size. You can Google your car and type o2 thread pitch size for more info. Most o2s are also the same thread as standard spark plugs, so you can use a defouler instead
are these a universal fit as far as diameter and threading? I have an '07 FJ cruiser
To my knowledge, most o2 threads are the same across most makes and models. Worst case, you could get a thread adaptor if it doesn't thread on
@@BigBensCarsAndCycles TY for your reply!
My check engine light came on my 07 FJ as well, and it's the 02 sensor. We're did you end up getting this spacer from and did you have to get 2 for both sides for the back of the converter
I found some on Amazon, I bought them but haven't installed them yet @@rudysalas6
@@rudysalas6 If your codes are anything other than p0420 or p0430 this wont fix your problem. and you only need to get 1 per side that sets the code. P0420 is bank 1, 430 is bank 2.
Thanks for the video. Will this solve the related issues with cat malfunctioning or will it just keep the check engine light off? (Car shaking, trouble accelerating, etc)
Just keeps the light off
Can people from California report in the comments if this worked for them or not recently and on newer vehicle's? We can get some stats going and also if the smog tech guy is physically checking under the vehicle for these, thank you
Works perfectly, if the smog shop looks under the car then remove it right before you go get the smog it’ll still pass because the smog monitors are completed, Gotta take it off right around the corner from the smog shop though lol
If they work in Maine, they WILL work in Cali. You people are not THAT special there...
I mean, I KNOW you guys can get cancer from certain chemicals that the rest of us in the 49 other states can NOT, but an O2 spacer not working in Cali? NO...
@@racingdreamz8021 Just went to do my smog check with the anti foulers and the guy caught it. Now my inspection report says "tampered".. might have to dump another $800 into my old truck. Super bummed 😮💨
Does this give the computer inaccurate information that will hurt the air/fuel mixture and give you bad mileage?
No, it won't interfere with proper A/F. It goes on the rear o2 bung. Which all that does is monitor the efficiency of the catalytic converter.
@@BigBensCarsAndCycles well, but if it accuses rich mixture, it wont send the information to the module to lean the mixture? Isnt it the function?
@@BigBensCarsAndCyclesif I do it to the 02 sensors closer to the engine would anything bad happen
@@rodrigob.9294
The front 02 sensor does that function. It lives in the exhaust manifold.
This rear 02 sensors job is to make sure that the cat is working properly. It has no influence regarding how the engine runs.
In VW group cars with a/f sensor in the front the rear one is used also for the mixture. Other brands I do not now.
I think its depwnds on what car you put them on. 02 spacers dont work on the BMW's (at least the newer one )
Thanks for the video. Have a question so if this spacer works is it the sensor thats bad or is it the converter? I have a 07 FJ crusier that the p0420 code popped up
If the spacer works, the converter is bad
Whatsup man, i replaced my cats but the sensor is still reading rich, maybe another fault but i have a p2099 and p2097, but its reading rich on the downstream, thinking of putting these on so i can pass the inspection, lets hope for the best
P2099 and P2097 mean that your system is running LEAN, NOT "rich", and that the ECU has commanded as far RICH as it is allowed to go, and the exhaust is STILL too lean.
The spacers will do NOTHING for those codes, and WILL just make the problem worse.
Fix your exhaust leaks, and that will take care of the codes. ALSO make sure that your fuel filter isn't plugged, and that you have enough fuel pressure.
Hi, do you know if this works on newer vehicles? I know their computer systems are a lot more complex. It worked beautifully on my old 96 4Runner but do you think these would work anything that are 2015 or newer?
Yes, it should work fine on newer cars as well. Thanks for watching! My car is a 2013 model by the way.
Yes it will…installed one on my 19 colorado
I added two extenders to my downstream brand new 02 sensors . My p420 code came back but I now have a p0057 code. All wiring looks good and the connect is nice and tight.
Can the spaces cause this code?
no, that code indicates a problem with the heater element inside the o2 sensor
after having a misfire ruin the original cat and now on aftermarket and about to do a catless these should have no trouble with either one
Hey guys so real questions i have full straightpipe exhaust and if i put these spacer does actually pass emissions state inspection?
Eventually, the catalytic converter clogged up, and if that happens, exhaust gases can be pushed back up into the engine.
PLEASE ANSWER BACK!!!!!
So I put a 4-1 header on my car on my 04 Mitsubishi lancer Ralliart it only has one cat on this car that's below the shifter the header and Cat-Back exhaust system eliminated that cat so of course I have the PO420 code......
I've never had to use one of these on the Honda's that I have modified they're not as picky at least the older 90s ones when you eliminate the cat
BUT MY QUESTION IS... Is it better to go with one like the style you have that's just straight up and down or I've heard that you should use the 90° ones that are L-shaped or j-shaped
What's your opinion on those???????
Since there's no cat I'd use the angled ones, that may stabilize the signal further than what this one can
Hello. Do i need to put spacer on downstream and upstream?
@@disturbator Only downstream, after the catalytic converter. The second sensor coming from the engine.
Hello, I have a 2007 Toyota Avalon with a new Doorman aftermarket catalytic converter I installed about 2 years ago, I just got a P0420 code this week. So I doubt it's the converter,... In any event, I'd like to buy one of these are they universal? Thanks. BTW...just subbed
Yes they are universal. Thanks for the sub
I purchased the same one and installed it. On a test drive now. we'll see if the light goes off.
I've heard these are super hit or miss
Hi, good luck. If your light comes back, the cat is definitely very inefficient. These work, but to a certain threshold.
@@BigBensCarsAndCycles lol well there are no cats. So it may not work. Haven't had cats for the last 60k+
@epicraptorman gotcha. If the light comes back, you can try stacking 2 spacers, or install a resistor in the signal circuit
@@BigBensCarsAndCycles Will two of the sensors that were featured in this video be able to be stacked? I had purchased two and may try that next if I need to
@@epicraptormanNever tried, but I don't see why not
they are getting ridiculous building cars like most you cant even get a cheap after market cat has to be some special 600 dollar cat, they tried to tell me was the case with mine cause it was plugged, went home cut it off smashed the cone out of it and installed one of these. been fine ever since
when you cut it off , did you weld it back on after the honey comb structure was removed? if so how did it act after being hollow
Do I need two of them? Or do I need just one?
one per cat
Will these work on a 2014 Ford Focus with a 2.0 liter? Thanks
After upgrading my exhaust manifold on my honda vtec, my check engine light sonetimes turns on, and when its off the car struggles to accelerate at low rpms but it fine at high rpms but when the check engine light is on then the car drives normally but i don't think vtec kicks in, any advice? Will this work? Apparently the car does run lean at low rpm sowould that mean it only needs a tune?
Does this work if you don’t have cats I have a 90 bronco that I deleted the whole emission system, including the smog I have zero cats on my exhaust system but I do have mufflers
Yeah it can still work. Cheap enough to try. If you get the engine light still, you can try a longer one.
Another video shows a different version of the spacers on a camaro thats missing two of its four cats.
Not sure if thats instructive or not?
Would this work on a cat delete to avoid a tune?
@@ArghhhhMose it's possible. Not guaranteed. Worth a try
This worked for me, I was shocked.
They're awesome for the price
Will this work on a car that’s fully catless? I got a 2008 ISF that has no secondary cats and no primary cats with PPE headers. The only codes I’m getting is PO136 and PO137 and that’s relating to B1S2. If these work I’m assuming I just need to put it on the primary ones?
Hey, it's cheap enough to just try. And yes only install them on the monitored cats (and only space the sensor after the cat)
@@BigBensCarsAndCyclesThanks for the fast reply I’ll try it out and hopefully it works
I put it on my downstream 02 sensor and I’m getting a check engine light for the 02 sensor circuit not working properly any idea on what could cause this I haven’t checked the voltage but the sensor isn’t broken or damaged either
The o2 may be bad. Sometimes breaking them loose and tightening can make one fail if it's about to anyway
I’m having this issue with my 2013 workvan, hate having the check engine light keep popping up. Where were you able to find on of these spacers? I can’t seem to find anything on eBay or Amazon.
I got mine on walmart.com
A couple of sparkplug foulers work too.
It’s 237am I’m bout to get up in go try now🤛🏽
That does not always work. Sometimes you have to get a tune to get rid of the problem if you are modified.
Hi, I have a question
I have the p0430 because my cat is dying, i heard that you have less power if this code shows up. Does the spacer also bring the power of the car back or is just the check engine light gonne
Hello. You do not have any reduced power with a weak cat. The only time you do is if it melts down and clogs.
Is it true it’s bad to run them on upstream sensors?
@Moocow444 yes, it will mess up the oxygen reading. And it won't fix the p0420
Just wondering if after putting the spacer on, the catalyst monitor should state “ready” if the spacer is working correct?
Yes after the monitor has completed its test, might need to drive it for several days
QUESTION I HAVE A p0420 code as most ppl I’ve read you said rear is it rear downstream that will correct my issue and I’m assuming you only need 1 right??
Yes the rear. And 1
brand? and which one would you recommended for a 2014 accord?
Any will work. Walmart.com has them. They're all pretty much the same
Hello I have Acura tl 2012. I am getting P0430 low threshold bank 2. Should I install the spacer in front sensor? Is it sensor 1 or 2 I would appreciate help thx
Sensor 2. The one behind the cat, towards the rear of the car
There are 4 total sensors bank has 2 sensors and bank 2 has 2. So does it go in sensor 1 or 2? Thx in advance
@@aliisprince How did it work?
@@ding9633 no it didn't. Am now used to it ,😬
gonna be doing one of these on my girlfriends car. We've replaced the cat and both sensors and still throwing that code at us so I hope this sorts it. Probably won't =D
Was it a new oem cat or aftermarket? If oem, there may be something else causing it, like a stuck open purge valve or vacuum leak
What thread size would I need for a Ford f150? I see many sizes but I’m not sure
M18 x 1.5 I believe
i have seen the screens break on them? have you noticed this happen on yours
I haven't yet.
I have a cat on the exhaust manifold and 1 after that. Where should I place it?
On the rear o2 after either cat
Does it help with fuel mileage?
No.
I installed mine yesterday and ran it for about 30 miles snd still hasn't gone off. Still hot the light and when i exit off the freeway and brake, it sputters like it wants to shut off
I bet you've got something more going on there, good luck to you! Oh, did you install the spacer downstream of the cat or before it towards the engine? It goes on the back
@@BigBensCarsAndCycles
Sounds like he put it on the a/f pre cat end lol. Can’t seem to find it on
Walmart site. Any ideas who else carries it ?
@@meca13b Google "o2 sensor spacer" and you will find one.
will they work if i have a bad sensor?
No
I used that same exact defouler on my Hyundai accent and it only keeps the CEL away like 2 percent of the time :(
If the cat is very worn it won't work
I tried it on my 2006 Nissan Armada. The engine light stays off longer than normal but the end result is that it DOES NOT work. Originally, it took 8-10 miles for the check engine light to come on. With the O2 spacers, between 15-30 miles the check engine light come back on.
Replace a catalytic converter which it will be expensive is the permanent fixed.
Hello sir does it reduce fuel consumption?
No. The rear o2 is only a catalyst monitor
Where can I find this part? And do you have a part number?
Google it, it's on walmart.com, sellers change all the time. It'll be a search result. Or get defoulers on amazon
How would they know you did this if they only plug up to obd2 port?
Exhaust "sniffer"
My downstream 02 sensor voltage is not oscillating and it shows p420 ! So if I fix a spacer will remove the code ?
Yes it should
Hi there will this work on a decated exhaust system. Ave got 2 sensors do I use 2 or just on o2 sensor thanks
Hi, it may keep the light off for a while. You can stack 2 spacers. Only put them on the downstream o2.
Is that the one on exhaust manifold or under car thanks just tried but still got the light on
I installed one of these on my 2014 Audi A3 tfsi and it's now throwing codes saying bank 1 running lean
did you put it on the rear or front o2?
If i have an 02 sensor code because the 02 sensor isnt working is it safe to install this instead of replacing the 02 sensor or will the computer not get the right reading of oxygen it needs to send to the engine?
Hi, this isn't designed to aid in fixing o2 sensors, it's designed for inefficient catalytic converters
Whats the correct fitment for honda accord 2008? I saw these on Ebay but not sure of the size, so i cannot buy it as i dont know the size lol.. please help.
Most O2 sensors are the same thread size in my experience
@BigBensCarsAndCycles thank you, not really sure if my accord fits; M18X1.50 says from the item description. Its 45mm, help me please
What if your cat is not bad, just aftermarket exhaust causing the light? You should get away with emissions testing as long as it is working correctly right?
If the emissions are within a certain limit it should be fine
Will that work on 2019 forester? I think it only has one o2 sensor
Yes. put on the sensor after the cat
HELLO EMERGENCY, I have a old 1998 Volvo S90 with a rattling cat and i know the cat comb has gone bad, how can i delete my clogged catalytic with out affecting the air / fuel ratio???
You can remove the exhaust from the rear of the cat and knock loose the comb with a hammer and pry bar, then rev the engine without the exhaust to blow it out
@@BigBensCarsAndCycles I can run a hollow cat with no problem?
@@SiLenT90723 yeah
@@BigBensCarsAndCycles Okay sorry if im bugging lol but just to be clear, I open unbolt my exhaust if possible and hollow out my cat till theres nothing and just bolt it back on with the O2 spacer on the rear o2 correct? and leave the front o2 without spacer correct…?
@@SiLenT90723 Yes
so its only for downstream not for upstream?
Correct
Do these help with a jerking motion from bad cats?
No. Sorry
Does this just space or does it have an actual filter that act as a mini catalytic?
It just spaces it out. The thing you see inside mine is a small screen
@@BigBensCarsAndCycles I used a spacer and it just came back. What else can I do? Does that mean it's to far gone?
@@krakenhits1587 what code, and did you put it downstream?
@@BigBensCarsAndCycles Po420 cat below efficiency Bank 1. I put it down stream with new OEM sensors. Tried cataclean twice. It worked two years ago and then the light came on a day after I passed emissions
@krakenhits1587 you can look up how to wire a resistor into the rear o2 wiring to get rid of the code. Or buy a cheap new cat for the car and install the spacer on that (because a cheap cat will trip p0420 soon after - but with a spacer it shouldn't come on)
So I don’t have a catalytic converter I was getting code P0054 and P0060 so I put the same spacers on the downstream sensors and I haven’t got a check engine light but I still keep getting the same codes. Only once instead of twice, so I was getting P0054 twice and P0060 twice is that normal
thats a heater resistance code, internal failure of the rear o2 sensor. Need to replace the sensor
Can the spacers cause a p0057 code?
Where can i purchase one of these?
Walmart . com
Will this fix p0157
@@devinschieck3249 it's designed to fix p0420 and p0430
Will that fix my modified car from outputting 400+hc to pass ca smog 😬🤧
Not if they use a sniffer
do you need a spacer on both cats or just driver side
You need 1 spacer on each cat that's setting a code. P0420 would be the bank 1 cat, bank 2 sets p0430. I'd you're unsure, put one on both
After installation, the p0420 code will not show up on the obd2 scanner right ????
You'll have to clear the code and drive it until the monitor completes. If the code doesn't come back, you're good. If it does, then your cat is VERY inefficient
@@BigBensCarsAndCycles I will update you after clearing it
Will a spacer before the cat cause a issue?
Yeah that can set a check engine light and cause the engine to not run correctly. And it won't do anything to get rid of your cat code
Will this work on my 2002 Toyota sequoia?
Yes
@@BigBensCarsAndCycles thanks for the swift response
@@BigBensCarsAndCycles thanks, I’ve installed them and will give you an update in about a week or so
It really works😉
So if I cut my cat out and replace it with pipe I put this where the 02 after the cat is?
Yeah after the cat
@@BigBensCarsAndCycleswhat about the front o2 wheere would you plug that in if the thread was on the cat itself?
Will it still work on a straight pipe? (Cat delete)
It should. The engine light may come on at times. You could wire in a resistor instead. I'd look that up too.
I bet you over half of you put it on the front
I bought a focus once with one on the upstream smh
Are the spacers all the same size
Some are longer and have 90 degree angles to further stabilize the o2 signal. The one shown in the video should be good enough though. You likely don't want too long or angled of one, as it may lower the signal too much and set a signal code (possibly)
thanks, was wondering about the one i'd gotten from china (temu actually) that looks almost exactly like that.
the mechanic who replaced my oxygen sensors (more than once) & cat after the theft (what a major pain!) says he's tried spacers on cars before w/o them working, but possibly these units are better. hoping at least, as i’m so sick of having that code & want to trade in my honda.
Yeah I've had good luck with mine, and you're welcome!
What about a P0139 ?
Replace downstream o2
You need to make sure your cat is not clogged or you’ll fuck up your engine 😊
my cat is clogged and rattles at cold starts, is it possible to cut it out and straught pipe with a spacer on the back o2 ? or would that affect my gas milage?
hey man thanks for the video but are there any other names for the product?
Oxygen O2 Sensor Adapter CEL Fix Check Engine Light Eliminator M18*1.5
Thats the title for the ad where I bought it on Walmart
@@BigBensCarsAndCycles appreciate it man, did you go in person or online 🥲
Hi
Do i have to change the sensor too ?
Nope
Can I weld the tip of it just to close the holes so no gases can come through the sensor?