EVERY ENGINE SENSOR EXPLAINED - MAF, MAP, IAT, TPS, 02, NOx, EGT - How it works, location, OBD2 code
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- เผยแพร่เมื่อ 19 พ.ค. 2024
- AEM SS MAP sensors: bit.ly/d4a-map-sensors
AEM wideband: bit.ly/D4Axserieswb
AEM IAT: bit.ly/D4A-iat-sensors
AEM FLUID TEMP: bit.ly/D4A-fluid-temp-sensors
AEM EGT: bit.ly/D4A-egt-sensors
00:00 Intro
00:57 Crankshaft position sensor
02:54 Camshaft position sensor
03:58 Throttle position sensor TPS
05:44 Mass air flow sensor MAF
07:39 Vane air flow meter AFM
08:44 Manifold absolute pressure sensor MAP
10:27 Oil pressure sensor
11:55 Fuel pressure sensor
12:34 Intake air temperature sensor IAT
14:09 Coolant temperature sensor
15:22 Fuel temperature sensor
16:16 Oil temperature sensor
17:24 Oxygen 02 sensor
20:18 Exhaust gas temperature sensor EGT
22:05 Nitrogen oxide sensor NOx
23:01 Knock sensor
24:07 Quick recap of key sensors
25:53 Outro
In this video we're explaining every single car engine sensor. For each sensor we'll be explaining what it does, how does it do it, where is the sensor location and what happens if the sensor goes bad. There's also OBD2 error codes for all the sensors. Stuff like P0335, P0118, P0131, P0340, P0300, P0102, P0113.
So the next time you have a problem with one of your sensors you will know what's happening, why is it happening, where is the sensor and what will happen if you don't fix it.
To make the video as simple and as logical I have grouped the sensor into 5 categories.
1. Position sensors (crankshaft position sensor, camshaft position sensor, throttle position sensor)
2. Air flow sensors (mass air flow sensor MAF, vane air flow meter)
3. Pressure sensors (MAP or manifold absolute pressure sensor, oil pressure sensor, fuel pressure sensor)
4. Temperature sensors (IAT or intake air temperature sensor, coolant temperature sensor, fuel temperature sensor, oil temperature sensor)
5. Air fuel ratios, emissions and others (oxygen 02 sensor both wide band and narrow band, egt or exhaust gas temperature sensor, nitrogen oxide or nox sensor for SCR selective catalyst reduction and the knock sensor)
We'll see how each sensor communicated with the ECU and how each sensor is a piece of the puzzle. When they all work together correctly the ECU gets to see the big picture and accurately and efficiently manage the operation of the engine. For example the crankshaft position sensor tells the ECU where the piston is so the ECU knows WHEN to inject the fuel. Air flow sensors like the Mass air flow sensor or the map sensor tell the ECU how much air is coming into the engine so the ECU knows HOW MUCH fuel to inject. The throttle position sensor and the intake air temperature sensor tell the ECU the load placed on the engine and the intake air temp which further improves the accuracy of the injection.
The final stream of information necessary for injection accuracy comes from the fuel pressure sensor which lets the ECU calculate exactly how long it needs to keep the injectors open in order to deliver the precise quantity of fuel needed.
In case something does go wrong we have the life saver sensors like the knock or oil pressure sensors. The knock sensor listens for knock or abnormal combustion and if it detects it it warns the ECU and the ECU in a matter of milliseconds retards ignition timing and/or adds fuel to prevent knock from occurring again. The oil pressure and oil temperature sensors make sure that the engine oil, the lifeblood of the engine, is within functional parameters. As soon as it even briefly drifts out of expected values the ECU can protect the engine and warn the driver.
All in all modern cars are a moving world of information where a large number of sensors rapidly provides endless amounts of data that gets interpreted at lightning speeds by the ECU where it triggers a sea of different actions that keep you moving smoothly and safely along the road all while preserving efficiency and minimizing emissions.
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AEM SS MAP sensors: bit.ly/d4a-map-sensors
AEM wideband: bit.ly/D4Axserieswb
AEM IAT: bit.ly/D4A-iat-sensors
AEM FLUID TEMP: bit.ly/D4A-fluid-temp-sensors
AEM EGT: bit.ly/D4A-egt-sensors
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😃 Excellent Basics 😃
Boost pressure sensor is missing
Boost pressure sensor is missing
@@liambyrne5285 Most vehicles are built as naturally aspirated vehicles.
Adding the boost pressure sensor just adds confusion. If you know enough to be fooling around with turbocharged engines you know the if/when/where's of a boost sensor.
This video is for average drivers.
Great video. Do you also have a video on how the fuel system works, how the fuel gauge works, along with how fuel is measured and what would happen if your fuel pump is broke and so on. Thank you
In the late nineties, when they said, "Oh the web means all information will be free," this is the kind of thing I wanted it to be. "Here's all the *these* explained". Excellent work, sir.
We also often asked what is a engine sensor and why would you even need one xD
Mate! "When you're not paying for the product, YOU're the product"! YT collects money over your activity. It shows you best commercials customized for you (and who knows what more), and that's why it is not really free. Obviusly, if you are a super-human, then maybe you benefit the content without being manipulated... dreams, mate! Dreams!
i have doing this work all my life and I picked up a little 1 2 👍🇹🇹🗽
This is a one of kind youtube video to be sure. Cheers!
I found out about the internet seeking employment IN PERSON 🤔 Eye contact✓ firm grip ✓ idk currently present ✓ updated on the process of submitting applications via web then I had to navigate through that unlimited distraction
As a mechanic for 6 years now, this video is still extremely valuable. Thank you bro
I'm sorry for asking the obvious question but I have to ask, as a mechanic for 6 years wouldn't you already know what all the sensors do?
@@collinslfc yes and no, having them in an easily accessible video like this is always a great refresher. some are easy to get mixed up with another and remember what does what, so a quick reminder is great
@@Mr.Thermistor7228 ;j;
@@Mr.Thermistor7228 do you have the wiring color to the the sensors memorized?
@@nobody-_-9717 on certain ones yes, on all of them, hell no lol
This guy just gave us a summary of two years worth of university lessons in 30 minutes. Awesome dude, i have a KIA sorento that i'm struggling with. This gives me an idea of what i could work on.
Stop struggling with that KIA and cut your losses. It's not worth it.
@@tmo2798 Well i managed to get it sorted, My turbo and Catalytic converter were out.
@@tmo2798 I have been driving Kia and Hyundai autos since the early eighties with no major issues. Just normal wear and tear. I guess I lucked out. 😉
@@Darknamja You did! Bet that!
got a minty ol 97 nissan with the KA24E and i too am struggling
but the symptoms it was showing, not really those in the video
With a channel like this, I feel like I'm in the largest classroom that's open 24/7 with one of the best teachers helping understand and maintain my vehicle and saving me money in the long run. You have my forever gratitude, sir.
I was a motor mechanic in the 1960's, early 70's then moved into the aviation industry so I missed the whole shift from simple mechanical linkage operation to electronic sensors, ECU's and actuators. I'm retired now and have just started working on my own cars again, upgraded my tool kit, bought an OBDII scanner, and am re-training myself to understand the tangle of pipes, tubes, sensors and wires that are under the bonnet of modern cars. This video was really helpful and clarified a few things I was unsure about.
Perfect 100% love the presentation and the content
Early 70’s and 80’s had the best planes around
on the Vortec engines they have some much reduntice build in to the PCM. if the MAF or MAP sensors fails the truck can still run just uses a table in place of sensor input. The PCM will try to get you home on that cold night in winter with sensors dropping like flys.
@@javajav3004 I flew a 1940 WACO biplane for an hour. That and a hop in a Stearman with aerobatic pilot were two of the most unforgettable experiences of my 70 years.
@@savage22bolt32 Waco and a stearman? You’ve flown older planes than I’ve worked on. Oldest I’ve worked on was an aeronca and a preww2 switz scout plane
This is pure gold, thanks for taking the trouble to make and upload this. Just one thing I would like to add, regarding fault-finding: very frequently the sensor isn't actually at fault. Instead, it's a connector somewhere between the sensor and the engine management computer. Replacing the sensor will often clear the fault because a new sensor comes with a new connector. Still, I always suggest, before spending time and money replacing a sensor believed at fault, separate connectors, spray with contact cleaner, re-assemble, re-test. I have been repairing electronics systems for 4 decades and have more experience of failed (or intermittent, even worse) connectors than I would wish on anyone!
Very sane advice! I wish I had mentioned it.
Even worse, my Idle Air Solenoid was bad. My truck would die when I'd shift from forward to reverse or just as I'd leave a stop light. It was intermittent and incredibly annoying. I finally decided that it was the Idle Air Solenoid, which it was. And it wasn't. I had removed it to clean the air passage in the throttle body. When I reinstalled it I bent one of the terminals. It was a simple issue, but since I had already bought a replacement I just installed the new one. The truck ran great after that.
I think they should do away with all that garbage problem solved
I agree. Fault finding
This is really good advice thanks @ Richard Black
If this video existed 10 years ago my life could very well have taken a different path. Wonderfully explained from a place of confidence, good diction and clarity. The 3D imaging is great too! Also pretty big on showing the variety and what would be considered modern vs classic.
I grew up not caring about cars or having anyone to teach me about them, but as I recently have become a car owner (of an older model at that) and ran into some issues with my O2 sensor, I've become super curious about how cars work. Stuff like this is invaluable because I want to understand what my mechanic is talking about when he tells me what's wrong and what needs to be fixed, and maybe one day I'll be able to do some repairs myself. Thanks so much!
💪💪💪
@@d4ayou mentioning aem every 5 mins GUARANTEED ILL NEVER SUB TO YOU. Clicked right off! Good job $hill👍👍👍
This is so ridiculously informative...I'm blown away. This is the best technically oriented automotive channel on TH-cam by several orders of magnitude.
3 times I was driving a 2020 Express once in reverse some sensors malfunctioned and the van went out of control it started to buck and jerk and serge out-of-control with no brakes I trust my own tuition more not do the sensors
How do you tell what sensors go out when they reset each other once you crank the van up when you lose control when the engine it is very dangerous to drive
Agree.
more entertaining and less tedious than Engineering Explained. that dude lost his way, now he's another annoying car TH-camr like vehicle virgin.
Yes indeed. Very well done, and one of the best technical explanations of the main advantage of going EV...no check engine light.
This video is a perfect example of why your channel is the most valuable and informative automotive channel on the internet. Simply outstanding!
Hear hear! 100%
Agree 100%
This and ChrisFix 🔥
@@Dankz_Live i enjoy chris fix for what he does. But he does not even come close to the depth that this guy goes into.
@@giggiddy you’re correct. I was just saying they both produce valuable content easy for beginners like me to digest.
Wow. This dude has a gift for not only explaining this in more very great detail but also explain it so a kid can learn it. That’s very rare when people explain this type of stuff
This is prime time TV level recording. Great job on the explanations, pictures, and animations. I think I learned more from this one video than all other TH-cam vids combined. Thanks for taking the time to do this.
I disagree. Television programming never came close to this level of quality. 😏
Hell of a job, explained exactly why my next car will be electric.
This sums up about half of my recent schooling except you couldn’t explain the tiny details of how the sensors are constructed completely which would make this video 3 hours long but overall I can say this might even be viewed in some technical schools
This video, along with all other videos explaining the engine, should be a mandatory part of all auto tech schools!
You don’t need to know all that other useless crap to be a mechanic trust me been there done that. And people will look at you like your stupid for caring about that when it comes to fixing cars.
@@billybob6469 yeah the only time you you need to know that is if you design those sensors otherwise it is useless in the shop
What school did you go to 😂?
@@killerdinamo08 I took 2 years in a technical high school and half a year in diesel school
This is one of the best videos I've ever seen. Is an amazing mix of, among other things, excellent technical knowledge, advances in animation technology, didactic skills, professionalism, and a desire to share knowledge. Thank you very much for creating it.
so true
Absolutely
Absolutely
@H Guzman
Wtf iz didakdik kudooowsh😶🕳️👀🤖💩 ; )
I'm leading a small team of people that are supposed to audit repairs done in the workshops of a big OEM. Most of my team never worked in the automotive. This video (and many others from you) are a huge help to enable my team to understnad multiple principles of the tech used in today's vehicles. But I also have to admit that, after many years in this industry, these videos are also a big help for me to understand better or remember some of the stuff I should know. Many, many thanks for doing all this work :)
How does one get in on this? I'm super interested in a new career, I'm watching this while washing the dishes and signed up for intro classes. I'm 32 years old in California.
That figures.
A team of know nothing's audting skilled craftsmen.
Must be government work, huh?
I have no idea why you don't have more subscribers. Your videos are masterpieces. The research, the delivery, and the graphics and animations are all brilliant. I don't know where you could find this collection of information anywhere else with such good instruction. Thank you very much for your work.
there are many newbies on youtube. It takes awhile to find what youre looking for when you dont know alot lol.
Because it's a lot to take in. Better to have the video broken up into 5 videos.
This is an underrated channel, this NEEDS more views
That's reversed logic... If people want/need to see this, they will come by themselves.
I'm a 3rd generation mechanic and I must say I come back to this video from time to time because it's always good for a refresher on the best video on TH-cam and has helped me understand my data better on my bidirectional scan tool
Your welcome partner and I can't say enough how much I know will give you a breakdown P.s.BLM
My friend you are a teacher. The way you explain things is very much something for you to be proud of. I appreciate your knowledge and time. 👍🏻
Best video I've ever watched to explain engine sensors. So clear and without any pointless long introductions or long camera shots... Thank you so much !
Dude, without a doubt this video is one of the most profoundly useful videos I have come across on YT! Much appreciation.
Thank you for creating this informative video about car engine sensors. It's great to see a comprehensive breakdown of each sensor, including its function, location, and potential issues if it goes bad. Additionally, providing the corresponding OBD2 error codes for each sensor is extremely helpful for those who are troubleshooting engine problems. This video is a valuable resource for car enthusiasts and mechanics alike. Keep up the excellent work!
As a young mechanic apprentice this video and whole channel is incredible! Although schooling teaches all of this it's great to watch your videos as a refresher or just to gain a little more knowledge! Keep it up and thanks as always
This guy is absolutely outstanding when it comes to thoroughly explaining the workings of an engine in a simplified way.
I never worked on an engine until 6 months ago. With a workshop manual, decent mechanics tool kit and his help, I have pulled off updates to my Toyota Hilux LN167 5L 3.0L diesel which have not only saved me a fortune. But given me the knowledge of how my vehicle works and the sense of accomplishment for achieving something I never though I would.
Hats off to you mate!
Galvanized Greatness brought up a great point! All of your videos, except maybe engine specific, should be in auto tech schools as a part of their curriculum! I sure wish I had these videos available to me when I was in auto tech school. I'm very thankful for them today though to keep expanding my knowledge of the engine. Thank you D4A! You are the best!
It's been said by many others before me, but the fact that educational content as fantastic as this is being shared freely is nothing short of a miracle.
D4A is the Patron Saint of petrol heads, blessing us all with the gift of knowledge and understanding!!! 😁😁😁
This is the most informative automotive video I've come across. I knew of most of these but it helps when you put them together like this and show how they all work together. Excellent job man!
Absolutely incredible video. I work at O'Reillys and I cannot wait to use this information to help customers. I learned a lot! Thank you!
Great information, I know many of the sensors would be redundant but a tutorial on diesels would also be extremely helpful for many of us.
Thanks
i learned somthing new..thanks for the video
This was hands down the best crash course of engine sensors summed up by 1 video. I am so sharing this to people.
This 30 minute video felt legitimately like 5. Excellent presentation.
This is probably the only channel that makes 20minutes plus video that I’ve watched and listened like I’m a student. I’m wondering how you know all this alone. Well done man
The most clear and enjoyable briefing on sensors I have ever seen. If only lots of other stuff was explained so clearly. Thank you so much brilliant.
I greatly appreciate the time you took to make this video.
I am a 71 year old car enthusiast.
I have 74 Plymouth Duster 360+.
I wanted to add sensors to help improve performance and I maintain my daily driver.
May God richly bless you. 👍🏾👍🏾👍🏾👍🏾👍🏾
Simply understanding and better learning by coming to the point. You did your "Education for Petrolheads (EfP)" homework well, Mr. D4A! Thanks a lot! 🔥🚗🔥
This video was fantastic! Thank you so much for taking the time to make this interesting, informative, and easy to watch! Perhaps you can make a future video about the other (non-engine) sensors used for airbag deployment, rain sensing wipers, automatic climate control, automatic headlights, and so forth. Thanks again!
It is insane to hear you explain this. Like you probably already know this but im blown away by how easily you can explain EVERYTHING. Literally everything. Kudo’s and thank you for teaching.
I’ve slowly taught myself how to work on cars over the years ever since I was little. Most of my learning has been stuff messing up on my dad’s project cars and now mine. Even though I’ve been learning for years, videos like this are still INVALUABLE to learn exactly why I’m replacing the things I am. It also helps out to better diagnose problems
If I was a teacher I would so use this as a instructional video you broke down everything so well, thanks
perfectly structured, perfectly explained point by point. You have done a good job. Thank you for your work.
Where is the brethealizer
Probably located on ignition switch. Mouth wash will not clean up the actions. 🥴😂
Great video! Super concise and interesting! Another tip about MAF sensors for anyone that might see this is that when you unplug a MAF on pretty much any vehicle the ecu will change to a default fuel map. So if you’ve got a P0101 or other maf code/the engines running like garbage, unplug the MAF and if the engine starts running like normal you know where your problem is 👌
you are an absolute lifesaver, mate. I'm writing an essay for uni on the relationship between sensors' inputs and outputs. This video his been my saving grace.
bloody legend mate
This vid is incredible, 10/10 informative, amazing animations, perfect!
Nice
What are the costs of thede censors are.
Excellent service 👌. Thank you for your valuable time and consideration to teaching us potential car engine fixers!
Thanks a lot for making a so complete video. Very nice idea of the all sensors recopilation, with typical location and symptoms. The fact that you explain how each sensor works internally was the best part for me.
Simple, direct, no distractions, stays on subject. Very good presentation!
This is probably the best video I've seen explaining sensor's. Started my automotive apprenticeship back in January and this definitely useful.
Thanks
This is what I call... A "Professional on the house". This video is awesome... It even includes the error codes for the failure sensor...
Thank you very much for the post!
D4A thank you making this video, I'm a motorcycle mechanic and have to deal with most of these sensors, you helped me understand how exactly they interact with the motor and made it to where I could explain it to the old boys. I just got my little brother into your videos too keep up the good work, peace be with you.
This video untangled a mess of my electrical problems on a 2016 Cadillac ATS.
I have six different codes showing up. I now better understand what
these sensors do and where they are located. With knowledge, I can now do things I could not do before. What an incredible video. Thank you a million times. Maybe I will finally get this car out of my life. Hurray!
As a carburettor guy who does not know that much about sensors and electronic fuel injection, this will definetely come in handy the next time I have to deal with a more modern car. Thanks for the great content.
This is definitely one of the best automotive channels on You-tube glad I stumbled upon it a few days ago. This video didn't tell me anything that I didn't already know but it was a great refresher and its a great introduction for people who are trying to learn these things for the first time. Being able to present information in a way that is interesting to people who already know while being suitable for those who are learning is very impressive. Keep up the excellent work.
Thank you for your given information of knowledge. Perfect to watch, over and over to be able to learn a little more without having to go into serious debt by going to a technical college!! I swear if I had the given availability to do so I'd jump at the chance in a heartbeat.
You guy are really the best teachers on You Tube. Between Car Care Nut and Scooty Kilmer, and your site the average person will learn things very quickly. Thanks. Keep it up, Gu
Great video! You certainly hit the main stand-alone sensors I know of. Others are built into the ECU electronics- battery voltage, detecting faulty solenoid resistance, O2 heater, purge vent, etc etc). Drivetrain gets into trans and diff temp, brake wear indicators, tpms, etc.
This is pure gold - an amazing amount of technical information professionally presented. Thank you so much.
Amazing job explaining all the sensors, plus I got to see where all the senior-year mech eng knowledge gets to be applied in vehicles that are an everyday part of our lifes. I wish I had found your channel much earlier. Keep up the great jod!
I'm in automotive school, just learning about this. Super informative and helpful to remember all these sensors. Thank you
I've been working on cars for like 20 years. I coulda really used that simple explanation years ago. Amazing video.
Easily one of the most informative video's I have seen. Will watch this four or five times at least. So much to take in. Well done.
as a non mechanic, this video helps me understand how sensors work and its use in an internal combustion engine. know the warning signs helps a lot! thank you and nicely done. Wish I found this videos much earlier,
Appreciate you providing this valuable information in one video. Been a mechanic for years. However, closed my wrecker service and repair shop 20 years ago. Since then, only repair or rebuild my own vehicles, friends and family. This video is a great educational video that can help me to teach and explain my son and daughter repairs for their vehicles. Being a woman who owned my own towing and recovery business that included a small repair shop, I can't explain to you how much I appreciate your content!!
I just can't understand how this is free. Such an excellent video. Keep up the good work.
Hahaha me too don't understand how come is it free to watch
@@m.b.smoshitoa8325 every fucking video is a masterpiece innit
I started a fulltime automotive job back in the 70's and seen the advancement of electronic engine control over the years until I retired (ASE Master Tech) in 2017. When I started, Chrysler is starting to add electronic ignition on their vehicles. Then GM and Ford fallowed. Then they started making computer controlled carburetors. Oxygen sensor was called Lambda then. European and Asian were using CIS (Continuous Injection System). The big three were using TBIs ( Throttle Body Injection). Then non-sequential (gang bang) port fuel injection followed by port sequential fuel injection. The ECM (Electronic Control module) was changed to PCM (Powertrain Control Module) when the module is controlling the engine and transmission. Now they have Direct Fuel Injection but it wasn't perfect because of the carbon build up in the valve seat causing driveability problems. They had to go back and add a port fuel injection to wash the carbon build up. I've learned that even you memorized all the function of the sensors and know how to use the scanner, there is a time that a problem exist but no DTC. Also start your troubleshooting first by visual inspection. Sometimes you can fix the problem without even connecting the scanner. Don't make a mistake by thinking its an electronic problem right away. Nice presentation.
Crank and cam position sensors can tell when you have a stretched timing chain which I think is pretty neat.
On some diesel Fords the ECM only uses the crank sensor to sync with the cam sensor at start up, then the cam sensor takes over. You can actually unplug the crank sensor and it won't cut out.
Must say this is a quick but amazingly comprehensive video - great job.
Fantastic video, this is very useful for anyone troubleshooting a modern car in an era where it's getting more difficult to service your own vehicle. Thanks!
One of the most well-explained videos on TH-cam for this topic. This is a Secondary, Trade-School level presentation.
An AMAZING video, that explains a whole lot of information in a very understandable way. A big THANK YOU!!, for all your Knowledge and helping me to understand the minefield of sensors and switches on the modern vehicles. 🙂
Greatly appreciate you taking the time to explain in great depth of these sensors and what they do and can and will cause. You've greatly help me on my 92 mustang I just bought last week.
Again, Thank You Sir!!
This is a hell of a video, compact, precise, clear, etc. I don't even know anything about cars but to put gas and put it on D. Great Job.
Brilliant!
Thank you for taking the time to educate us. I knew the majority, not all. Putting a video together like this, is very helpful.
This and ChrisFix Channel are the most valuable automotive channels on YT. Much appreciated 🙏🏽
Totally agree with you...
Except this guy showing his face and Chris no...
Invaluable video for a home mechanic! I have a 2016 Equinox with a 2.4L Ecotech. Problem was it would start run 2-5 seconds and stall in P or N. No check engine light, no code. I changed both valve advance solenoids no help. I replaced high press fuel pump, no help. I disconnected the MAF sensor and car ran with check engine light and now a code. I tried cleaning it with MAF sensor cleaner no help. Spend $70 for new sensor and fixed it. It kicked my ass because there was no check engine light or code. This video is awesome and I saved it to my favorites. Ty for making it.
Very useful video. Crankshaft tooth patterns ("toner ring") have become much more complicated than the early 36-1 tooth ones. The more complicated signal lets the engine controller know the exact crankshaft position, so can start firing sparks when cranking before even one full revolution of the the crankshaft. The older pattern required a full revolution to assuredly find the missing tooth. I found that my 2002 Chrysler 3.8L flexplate has changed the slot pattern over the years, so had to get a replacement for my exact year since even one year off was different. Ditto for camshaft "targets" (sometimes an array of rotating magnets rather than slotted wheel). First I've heard of temperature sensors for fuel and oil, NOx, and even fuel rail pressure. The later was formerly assumed assured by the fuel pressure regulator setting.
Biggest problem with MAF engine control is that a vacuum leak after the MAF is not accounted for, whereas a vacuum leak with a MAP system handles vacuum leaks fine, which you can see by introducing a leak, say pull off the large brake booster vacuum hose. The engine may then idle faster (overwhelms IAC), but still runs smooth since it accounts for the increased airflow. The 1990's Bosch Jetronic system in Euro engines was a type of mechanical AFM, where the flapper directly changed the fuel flow thru linkages, which went to a mechanical fuel distributor. Amazing to view, like a delicate Swiss watch, though expensive fix and problematic. You see those formerly pricey cars lined up in rows now at the salvage yards.
Great video!! I took 2 years of automotive classes in high school. Before the age of computers. Now I am currently up to date with ECU and sensors. Mechanical and electronics
i took one year, (before computers) Not yet or ever caught up, but this was a Huge Leap! Cheers!
Mate this is perfect! I've had some problems with the sensors and haven't found a video as good as this one. Great stuff and thanks for sharing
Bro, I am 2:07 into this video and I am blown away by the level of detail in this video. You've just earned yourself a subscriber. 👍👍
I had a fantastic time watching this video even though I am well versed in these sensors. You do a fantastic job explaining things. Keep it up!
This is the BEST explanation of sensors I've ever had. I learned. Thank you.
Bro, since ive been getting active about my car, or even just at work getting familiar with my car and upgrades, youve been my go to along with Donut. I wish i could thank u as much as u deserve 🎉🎉🎉🎉
Very informative. You sir know how to provide good info with enough details to clear any confusion or misunderstanding and do so with neat and simple presentation. Thank you for your hard work I appreciate it
As literally every other comment says- this is a PERFECTLY made educational video.
I’m restoring an E30 and learning everything from scratch- this helps so so much.
And now I’m subscribed!
Praise you for this and your time on putting all this together from explaining to where it’s most likely located I honestly want to thank you so much for your time and effort in this very educational helpful awesome video!
Thank you for this in-depth explanation. This is the kind of information available on the web before some individuals decided to not share the knowledge..
The first 27 seconds of this video is all it took to get me to like and subscribe to your channel. Your videos cover everything I need to know in one place and time stamps are a godsend! Thanks!
I dare to say that this is probably the best video I've ever seen in TH-cam! Outstanding! Thank you so much for sharing this level of knowledge!
Thanks for this mate 👍,It looks simple enough but before watching this video of yours i wouldn't have known what was what especially that 2nd hose on the egr,I didn't even know there was another pipe to go on there,It doesn't feel like another pipe would even fit on there 😂,you made it very straight forward and correct,Thanks again.
this video was exactly what I needed. im an electrician and I just rewired my 1987 p30 but im not a mechanic and I was struggling to identify some of the sensors. thanks!
D4A I really don’t know how you keep on presenting really useful information in such a visual and interesting manner. Thank you my friend
I was so stoked to see a Saturn 1.9L, it's the first engine I've ever tore down to the crank for a full rebuild.
This is an awesome clip. Thank you for making it and sharing detailed info regarding its topic. I wish we had more video clips of this caliber in general. Dude, keep up with good work.
As usual, a very thorough and informative video! Great stuff!
I watched all 26 minutes even though I drive a 53 year old MGB who's sensors are limited to oil pressure, water temperature and the driver 😁
I join the many great feedbacks.
Simply the best explanations I have ever seen. Great illustrations, great narration.
Best of the best, a gold medal.
You cannot overstate how good this video is. Bravo.
Btw, the incoming "air" at 8:00 made me Lol. Brilliant.
That gave me a chuckle too. Instructional in more ways than one
Glad he stopped at four fingers of airflow, I was starting to feel uncomfortable.
Not commenting after watching such an awesome and in depth video with easy to understand graphics and great animation would be an insult. Thankyou so much for sharing invaluable knowledge. For an amateur like me, this is really helpful. Keep up the great work. Subscribed :)
The video is EXCELLENT! As a young car enthusiast guy I really appreciate your work because everything is well explained even to people who are not mechanic themselves! I wanna ask about PCV and EGR and the symptoms in case of them failing...
I only watched the MAP sensor portion of this thorough and informative video, but just that one section had an impressive level of detail, including how the little parts inside the sensor work. Very interesting. Thank you for your hard work sir!