How to fix P0420 code with non Fowlers (cheap & easy)

[@kwsbike]

as the 420 code can be caused by a number on issues w/the car, not sure how you can say that this fix will clear the code.

[@JR-kr1lv]

Where can you buy these now, I looked at Lowe's and they have alot and nothing like that. What size is average threads on male and the female which I still have old one I replaced and helped out for few hundred miles but small gasket leak at back of cat , now much worse and I'm gonna try jb weld exhaust tape repair. Just at the collector. Thanks if any replies

[@nebhosspin1252]

Is this for downstream #2 sensor and not #1 sensor?

[@stevesmith756]

It works AWSOME. Did it on a Honda with 275k miles on it and don’t want to spend 1200 bucks on a Ca only Cat.

[@cesar2542]

Did you pass smog while having them on? I am also in California with 420 code. Sucks

[@stevesmith756]

@@cesar2542 yes. Nobody checks it

[@cesar2542]

Ok thank you brother will try this. Did you reset codes manually or did check engine go away by itself?

[@stevesmith756]

@@cesar2542 cleared it with my code reader but you can disconnect the battery. Just have to drive about 50-69 miles for the computer to reset

[@cesar2542]

Will give it a shot I appreciate your help man! Gotta pass smog asap

[@Allourmanfam]

How does this work without a mini cat inside? And also wouldn’t it be better to use a J-joint positioned forwards? Seems like the dirty air could still make its way inside that extender

[@HailAnts]

It moves the O₂ sensor just far enough away from the exhaust stream that it works.

[@Ocho474]

My resonated test pipes have longer elbow shape bungs and I just got a P2098 code a week after installing the pipes, what is the difference between P2098 and the P0420?

[@rickolivasone4790]

for those that don't know. this is for the bottom o2 sensors and yes it works.

[@falcorthewonderdog2758]

Doesn't really fix anything.

[@mrolibuilt]

Problem is everyone the O2 monitor will not ready if you add the defowler and if in CA wont pass smog. CA emissions on some vehicles are too tight for example My 2003 Silverado is allowed 1004 parts per million but will not pass because it is sometimes putting out 1006 PPM so CA wants me to buy a $2500 dollar CAT which is made and sold in CA. So now I have to drive my 69 F100 which puts out 500,000 PPM but is smog exempt. Not what I want to do but what I have to do. What sucks to is the State can BIT flip your ECM to give a bad reading forcing you to buy a new car Yaaaaaay dictatorship

[@HailAnts]

The O₂ sensor will still work when using a housing. It just moves it far enough away from the exhaust stream to not trigger the check engine light's P0420 cat inefficiency code. These rules are not based on science, cars of the last 30 years burn ridiculously clean. California emission laws are a corrupt money-making scheme between the govt and auto manufacturers. Defeating them is the American way! 🇺🇸🖕🏻

[@maychieus]

Great video very detail 👍

[@paulp4243]

Do Non Fowlers prevent hens?

[@buddy6551]

This will probably turn code off but fixes nothing. Engine Exhaust is still restricted by a clogged cat. Creating unwanted back pressure on Engine.

[@user-bc1kp1sl2e]

Will adding this non fowler to a new CAT that is not OEM fix this code?

[@ChadHer]

I have an 04 sequoia with PO420 code. I can't use a non fouler because my downstream O2 sensors are bracket or flange type mount. Anyone have this issue?

[@FaZeSketch]

Will this pass smog check?

[@fanueladebayor9553]

How to get the foulers please

[@mightymotors2074]

Any auto store will have them!

[@bernarddrenzcampbell2757]

I got the check engine light with Po420 code but every time I drive 45min-1 hour on the highway the check engine light goes away for a day or two then come back on?

[@mightymotors2074]

Sounds your cat is starting to get clogged but when you drive for a long time, it probably helps to clear some of it out. If I was you, I would go on the highway and drive for an hour to see if you can help clean that out and I would Also put in this additive called cat clean in its like 30.00 a bottle but it would probably help in your case because it sounds like it’s not fully clogged yet cat clean is just a chemical that you put in The gas tank you can get it at any auto parts store but Walmart might have it cheaper

[@bernarddrenzcampbell2757]

@@mightymotors2074 thanks 🙏

[@mightymotors2074]

No problem your welcome!

[@reecespeace9109]

If you see this, please let me know if it helped. Samething happened with mine.

[@Ready4smog]

The catalyst is borderline. When the vehicle is driven on a stop and go traffic the code will go away. Then the smog technical will not see the code and has no choice but to pass the smog check.

[@user-bc1kp1sl2e]

Will adding a spark plug non-fowler to the downstream O2 sensor on a NEW cat fix the issue? I've had the NEW cat (likely not OEM) and I'm still getting the P0420 code despite no exhaust leaks, new o2 sensors

[@mightymotors2074]

@@user-bc1kp1sl2e yes I think that would definitely still help you

[@user-bc1kp1sl2e]

@@mightymotors2074 okay because I did everything, new Cat, new o2 sensors, personally checked the entire exhaust system and at first I found a leak to the manifold but I personally replaced and inspected it after with no leaks but the code came back on after 3 days of clearning it with an obd2 scanner

[@richgorilla1562]

I own a 2017 F150 3.5L naturally aspirated. I have an o2 sensor on the cat, which i have gutted , and an o2 sensor after the cat. Which one should i use the non foulers on?

[@mightymotors2074]

The one after that cat

[@leetos.4915]

What’s the consequence when someone get caught? Jail time? Fine? License revoked? Anyone know? I’m down to do this . I’m the owner of the car and have rights.😄

[@darvinmai1047]

Would this work on a 2010 ford escape v6?

[@mightymotors2074]

I believe it would

[@richgorilla1562]

I own a 2017 F150 3.5L naturally aspirated. I have an o2 sensor on the cat, which i have gutted , and an o2 sensor after the cat. Which one should i use the non foulers on?

[@gio.gio.2225]

Ciao ho provato sulla mi 500 abarth con errore p0420 con il distanziatore , ma non ho trovato beneficio anzi al contrario va peggio di prima. Non capisco perché.grazie se sai come fare fammi sapere

[@sylviagonzalez3653]

Can I do this on my honda element 2004 can't got rid of the code and still dont pass inspection

[@mightymotors2074]

Yes this should work for you!

[@sylviagonzalez3653]

Thank you. I'll try it, and I will let you know if it worked

[@al-mubdizahir8704]

so one spacer wont work? i see you are using two

[@mightymotors2074]

Yes I think one will work too

[@MarcDufresneosorusrex]

my cat rattles , for two years no trouble , engine started sputtering recently (2004 escape) . I think i am out of options, oh well, It rattled when I bought it used it with no issues.

[@mightymotors2074]

It sounds like the cat has come loose on the inside if you can try to get the loose pieces out if you can that would probably fix your sputtering it might just be moving around freely in there and occasionally is blocking it causing the sputtering

[@MarcDufresneosorusrex]

@@mightymotors2074 ty, I will try

[@mwald5194]

Will not pass in ny

[@seireitei4193]

It just masks the problem, the problem is still there, which is most likely fked up or clogged cat.

[@michaelstudelska5607]

I did this to my daughter’s car. After about 4 months she got a code saying the system is running too lean. Now what?

[@mightymotors2074]

It is possible that the sensor went bad

[@falcorthewonderdog2758]

This guy gives technicians a bad name. Instead of hacking the susyem why not perform the diagnostic and actually fix the issue?

[@nolantolson652]

The CAT is more then likely functional. But reading a little below threshold. Why spend 300-1000 dollar. Replacing the cat when the car is worth 1k-4k. When a $10 spacer corrects the issue.

[@KevinMaxwell-o3t]

Because the cost of replacing a cat is very high. Here in Canada you're looking at paying a shop Can$2500-3500 Not everyone has that kind of money.

[@santiagocaballes5385]

Just replace the sensor & spray the catalytic converter with sea foam

[@HailAnts]

Doesn't work.

[@crushrreviews]

kzbin.info/www/bejne/iYfaq5Rui9Rojqc

[@Mogonly]

How to know which sensor to do this to?

[@mightymotors2074]

It would be the one either in or after the cat

[@Mogonly]

@@mightymotors2074 so how can I be sure which one it is?

[@push3]

This doesn’t fix anything

[@LeadStarDude]

This is what you do after cutting the catalytic converter off to keep the engine light from tripping. Never do this with an old and clogged catalytic converter still on the exhaust system. You will destroy your engine by making it run too rich.

[@jaxcell]

Downstream Sensor reports Rich/Lean readings? I thought it's to upstream that did that.

[@jeffcarello7446]

ILLEGAL!!! We see stupid shit like this come through our shop occasionally. Why does it end up in our shop? Because it eventually fails and costs the owner of the vehicle even more to fix correctly in the long run! You're only asking for more trouble in the long run if you follow this method 🙄

[@precious5663]

How's it cost more to fix it now vs. later?

[@jeffcarello7446]

Pay me now or pay me a whole lot more later... O2 Foulers are 100% illegal in all states that have emissions testing. Installing O2 foulers is 100% emissions tampering, and subjects the owner of the vehicle, the mechanic, and the shop that did the work to major fines! www.epa.gov/sites/default/files/2020-12/documents/tamperinganddefeatdevices-enfalert.pdf

[@jeffcarello7446]

@@precious5663 The EPA can fine businesses that sell or install devices to defeat emission controls over $5,000 per device. Dealers can be fined over $5,000 per tampered vehicle. The EPA can also seek administrative orders, civil sanctions, or participate in criminal actions. The Clean Air Act (CAA) authorizes fines of up to $25,000 per day for emissions violations.

[@mudpuddle2658]

So how many people have been caught doing this and fined? I'll wait............lmao@@jeffcarello7446

[@LeadStarDude]

Where I live there are no inspections, and over half the vehicles don't have a catalytic converter anymore. They all use this method to keep the engine light off. You want to avoid those fines? Move to a better state that actually protects it's citizens from federal overreach by having no vehicle inspections to begin with.

[@fordresurrectionest9556]

Hack!

[@davechambers5387]

this does NOT work , this kind of shite needs to stop .

[@falcorthewonderdog2758]

That hack doesn't fix anything.

[@willydunn6978]

This is called tampering with the emission system. It is also against the law. The clean air act. Just a FYI

[@jonmo2694]

So is speeding but you all still do it.

[@Helmuesi911]

Breakin the law, breakin the law 🤘🏻

[@jonmo2694]

@@Helmuesi911 😁🤣

[@jimmyfavereau]

no worse than the treasonous acts committed by most of the dc demons :D

[@rkt81]

May be forcing people to take scam vaccines would be ok for people like you.