When people say "look it up on KZfaq" they're talking about finding guys like this.

For a younger man you are extremely well spoken and fully educated on you source material. Great Job! Your parents should be so proud of how intelligent you have become

Just changed my upstream O2 sensor on my 1999 Saturn SL. Yes, it’s still running great. I cleaned throttle body, changed plugs and wires, cleaned and re-oiled my K&N air filter plus other parts. The car ran great until it warmed up. Finally my service engine light came on. Took it to Advance Auto and they said O2 sensor code came up. That was actually what i was suspecting. I didn’t have the understanding on how it worked or just how important it is for engine performance. So with a new O2 sensor it runs like a top. I won’t be convinced that everything is working until i take a longer drive and I’ll know. I was wondering why my damn fuel economy went to hell. I was always getting 38mpg on average. This is highway/city average. Highway normally 40+ mpg! I love my old Saturn and will drive it until it dies. Thanks for your informative video!

has anyone ever taken the time to tell you how valuable your videos are for us

Woaw , Real professional schooling here , the best 1 hour on this subject , I enjoyed the way the information is being conveyed, attitude and dynamics are superb , Thank you Mr. Becker and Fritz !! 👏👏

This is the best video I have seen on O2 (Lambda) sensors. I taught F.A.S.T.(Factory Authorized Suzuki Training) at MM I(Motorcycle Mechanics Institute) 2006~2011. Even though some of the info is simplified it makes it easier to understand. I would not have been allowed to explain anything that was not approved curriculum but a few students were always interested in how and why things work. The information was much more difficult to find back then (except in technical terms majority wouldn't understand) I'm going to link this on Facebook as several of my former students stay in touch and are still interested in learning 'more'

I want to thank you for releasing these videos. Yes they're long, but it's an education on how these things work. Not some quick fix. Very, very valuable information.

Dude you miss your calling as a teacher you're absolutely amazing thank you so much you saved me a lot of money and frustration

ike's confidence and knowledge and preparedness comes through in his presentation. In spades. This all is critical to the viewer/student: if the instructor is "um"ing and "uh"ing, it results in losing the attention of the student. I've signed up for class notification due to Mike's presentation. He's a class 1 pro! Sign me "one who used to do training"; it's not easy.

I'm five years late to the party here but, brilliant and informative video. Cheers!

I'm not a professional tech, but the nerd in me loves info videos like this, and this one was excellent!! Will definitely be checking out other videos. Thanks!

I count this video among a very short list of highly informative auto tech 'know how 'youtube videos. You guys are awesome for making this public!

Here's another intelligent question. With an 02 sensor adapter how is it able to trick the PCM to think you still have one??

1st time watching just did my senior on my 1999 searra truck. You are teaching me so much.

First time @ your video, and love learning about the systems and fixes. At this time was researching sensors because of a "lean code" due to acceleration issue. Knowledge is power. Thank you!

Not a technician and only really looking at this stuff for an hour or so, and I STILL knew the answer to that O2 sensor trivia question. LOL

Looking forward to the wideband session.Thanks for the class !

Best diagnosis videos out there..Thanks for spending the time and providing knowledge....

WOW i am blown away by the fact that you can destroy an oxygen sensor by applying dialectric grease to the connector. I think back to all the years Ive replaced oxy sensors that malfunctioned a few months after, I so thoughtfully greased the connector. I just spent 100 bucks replacing a NEW upstream oxy sensor TWICE cause my so called mechanic friend told me "be sure to apply dialectric grease to keep water out and stop the corrosion. two months later that new oxy sensor was unresponsive!

You explain things so well. Thank you from South Africa.

Use Propane instead of Brake Cleaner. Much safer and doesn't damage your rubber hoses.

Do I need to disconnect the negative on my battery before changing my up stream Bank 2 sensor 1? This is a 2014 Yukon XL 5.3L V8 SLT.

This is what you tube is for in my books. People like this man are awesome, he has a great teaching style. Good job on your course. Looking forward to many more. Subbed

I have learned a lot from this KZfaq channel, more than a lot of the other frivolous KZfaq videos I thank u

great video

Is this an add for not getting a modern Car.My everyday driver is 60 years old and has one screw to adjust the fuel mix.I don't need to pay two computer mechanics plus parts two day's not to fix it. My car gets 37 mpg.

One of the best videos ever of eletronic fuel systems

Finally a video which mentioned Titania sensors! Thanks a lot!

1 hr 11 min 'basics'!

Neither A or B

1st time viewer right here!! And All I can say is thank you for ALL the info on 02 sensors!👍 Great job now i gotta go work on my car again! Lol.

Awesome clear lecture. Very good and clear illustrations. Thank you!

Neither of the techs are correct. The second sensor is after the 🐈

D

This Is a great video class. I’ve paid for classes that are similar in richness of information for different subjects.

Awesome video, thanks so much. When I saw how long it was going to be, I thought I'd skip through it, but ended up watching it from start to finish, sometimes going back a bit to check again! One question: Does the heater stay on or does the ECU know when it's hot enough from exhaust gases and turn off the heater current?

Outstanding job guys, I just learned all there is to know about HO2 sensors and fuel trim. Thanks for the lesson. If only i could catch your live broadcast so i could get me one of those awesome t-shirts, too busy during the day. Can't wait for the next broadcast. Thanks again.

The white heater sensor wires can go either way, i missed your live demo as I'm in the UK, but correctly correctly answered to the quiz, would love a t shirt, have now learned how to read long term and short term fuel trims. Regards Pete

Thank you for the descriptive videos on oxygen sensors

Great video!!! amazing information... I love the fact that it's really specific. I have a degrees in electronics and I'm eager to learn new skills... mostly because I'm broke I can't pay a mechanic to fix my truck...hahaha!!! But at some level I'm glad that my truck it's giving me problem because I really enjoyed to learn all this stuff today...👍👍👍👍

Thanks you. This was very helpful, informative, and delivered in a way that made it easy to understand

cool stuff. Very appreciated. I thought a tiny oil leak was innocuous. Just so happened to drip on an o2 sensor . Rear / back . now I understand what my vehicle has been doing for years.. with a half bad / basically slowly failing o2 sensor.

I love this young buck... Breaking off some invaluable knowledge...!!!!!!! I'm now a sub!!!

Nice video, I have all 02 sensors that are inactive, what are the steps or how do I test this on a 2005 Kia Amanti?? Can you make a video on this?

Greatest indepth on sensors ive ever seen. Thanks a lot. This really helps a lot.

That Mustang has bigger problems hearing that piston knock. Good video thanks!

Two failures P0141 and P0161 on 2002 ws6 transam. Could it be the sensors are fine but the catalytic converter has failed.Thanks for the great instructional video.

You said several times during the live demos we see our fuel sensors go back to switching. It's the computer thats pulsing, not the sensors.

answer is D because its only needs to be cleaned from any grease because sensor does onle 0.2 -1.0 apprx volt so grease will mess it never apply any grease on a low voltage circuits to avoid short or interferences

Best teacher waching u from uganda

I went to the comment section and lost what tiny bit of faith in mechanics I had. My journey into learning mechanics was inspired by one mechanic at a dealership that forgot to tighten a drain bolt all the way, stupid little mistake but I might've missed it if I parked in grass. Did any of you guessing in the comments think to notice that this video is 5 YEARS old?

Thank you for some reasons I need a refresher on o2 sensor as well as other sensors from time to time.

Just found your channel today, love these fuel trim videos! Solid info and very well presented... I'm going to say it, best O2 sensor video ever. Cheers guys.

D neither.. Very nice video nicely done, nice sound absorbing materials also.. Easily one of the best detailed videos I’ve seen on the subject. Dabbled into this sort of thing way back in late 80,s had my first snap-on scanner early 90,s. I loved and welcomed the multi-port shift away from carbs... However I Leaned more towards the 12volt accessories and such hehe... happy good times.

Great video! Very educational. I wonder though if this O2 closed loop is fast enough for drag racing applications where the run is over in 8.50 seconds.

This is so great, to learn here what I would have to pay thousands from a tech school. I know that I need to continue watching more of your tutorials. I am expecting some parts for my 2009 Nissan Rogue S, it has the check engine "nightmare" light very steady I thought I had everything packed down to work on my car, but I will continue your tutorials, so that I can get straight to the problem and not go guessing. Thanks. And the first Q's answer is B.

Outstanding video! I assume the scan tool only works on OBD2 vehicles. But does the Oscilloscope work on OBD1 vehicles as well as OBD2? Being just a matter of knowing where to make the connections?

You're a great teacher, thank you very much! I have a much better understanding of o2 sensors now.

excellent presentation

Answer is D! Wish i caught this live, would have loved a t-shirt... 😢☹ Great job on the video Liked and subscribed!

Most excellent and through training video. Thanks for sharing

Excellent information and presentation, thank you!

Awesome content! I'm great a changing parts but know nothing about using scopes and multimeters in car even though I have a low voltage background. I definitely learned a lot from this video. Can I buy you guys a beer or something?

Answer is D. Looking forward for my Tshirt to arrive. Thank you and really appreciate your efforts for educational purpose. Regards.

This is very good. I appreciate this.

Thank you for your time.

You are a fantastic instructor.

Thank you so much for inviting me on oxygen sensors I was stuck there for a while thank you but one more question on a BMW 2005 Bank 1 and bank 2 those are up front by the spark plugs or by the muffler I mean by the muffler or I should say that Cadillac converter correct

Thank you for the in-depth, clear explanation.

On a fuel ratio sensor for honda civic 05 whats the resistance im suppost to see on the ohms..

I to am looking forward to the wideband session. I am not a mechanic by trade but I'm learning these tests and their importance. Can you really clean if thats the case sensors?

Perfect explanation regarding O2 sensors,....its good, how can we learn about O2 sensors. Thank you

Good explanation of O2 sensors... will get back for the rest.. LONG VIDEO!!

THE ANSWER IS D NEITHER. this is because die electric grease can add resistance to low voltage circuits causing ecm to get wrong voltage signal. and to answer the second question is because we don't know if the oxygen sensor is at operating temperature and 500mv is the bias voltage sent from the ecm so we know that is working.

logged into class tonight!

D is the answer ,and I wanna tell you that at first glance I thought its along booring video , but while watching every second told me something new , thanks alot from Egypt

Does o2 sensor compare o2 in exhaust air with outside exhaust air 2? if there is grease on o2 sensor part, out side exhaust pipe then will that grease cause rich or lean?

I think it would be D..I been watching a lot of videos because i'm trying to get my truck fixed.Hope i have won a t-shirt.Thanks

depends on vehicle norm. whether 500mv is normal or crossed circuit.

I wish I had found this video ten years ago, it would have made the effort to learn all of this less painful. Even so, you've done another excellent review, Mike. I love this kind of scientific review. By the way, one issue I've always wondered about is the correct choice for antiseize compounds in various applications (not just O2 sensors). I've got nickel and copper antiseize, but wonder a little about when I should reach for one over the other. I believe around salt water there is a third option, and even an aluminum antiseize. Is it correct to assume that the choice rotates around the risk of electrolytic reactions?

I have watched it and now understand the principal of O2 sensor, but still have a question to which I can't find the answer anywhere on the internet. When I connect my laptop to a Nissan 300zx via Nissan data scan software I can check the O2 sensors. The question is: does the O2 sensor work all the time ? (at idle) In my case looks like they do nothing at idle but as soon as I open the throttle (1400 - 2000 rmp) O2 sensor gives a signal.

Super materiał, amerykański odpowiednik Profesora Chrisa 😁 Szkoda że bez napisów, nie wszystko dokładnie można zrozumieć

Great presentation!

You're a good kid, got me to sub just because I want to see you succeed

very well presented and understood / THX !!

Great Video, Great Presentation, Learned a whole lot !!!!

Very nice commentary Mike in your discussion of narrow band O2 sensors. And with the O2 waveforms being shown on the two vehicles, ties it all together. On the second vehicle, it's obvious that it needs an O2 sensor and a fix of the oil leak. Is there any chance there will be a follow-up on the GTO to see what the actual problem is with it? Thanks again Mike and say hello to your co-worker also.

Fritz seems to be down to earth guy.

Great lessons. On the other hand, If you look at a sensor,how do you identify whether it’s a zirconia one or a Titania one ?

Awesome my friend I lost video but have been listening to you,will I be able to get this tomorrow or can I save with your permission

this is one of best video i see and i learn a lot thaks for sharing this video

SUPER EXPLANATION. THANK YOU VERY MUCH.

Can you tell a Titania sensor from a zirconia by looking at them? Great info. Thanks for sharing. Subscribed.

I have an 03 F150 Lariat with high negative fuel trims, and a P0401 code. I have replaced everything in the EGR system (as well as several other parts/sensors) and all 4 O2 sensors plus catalytic converters. Any ideas what could be causing that?

i got P0420 on 2014 Nissan Patfinder Sl AWD on cold day. P0420 Catalyst System Efficiency Below Threshold (Bank 1) should i change the O2 sensor, Air Fuel Ration Sensor, or Cartalyst converter? please advice

Thank u i learned a lot ur teaching is very clear

GREAT VIDEO. Learned alot. Thank you. Be blessed

Bank 2 p0430 nissan murano. Bank 2. I removed my OEM plug and is different from the bed o2 sensor. Oem is bullet shape. New o2 sensor is cylinder with holes around. Are they the same?

Great video Mike. Would the o2 on a cold start be sending any form of signal to the pcm? My 04 Ram 1500 5.7 will race like heck on a cold start (25-3000 rpm) then drop to idle. Once engine is warm the starts are normal. I have no codes

Very good video! Very thorough!