THIS Is the Most Underrated Car Invention in 2023 | The Torque Converter

[@Cripleclarence_1948]

You often mention that you still have to clean the engine bay/compartment of a vehicle before you turn it back over to the customer. I would like to see a video of what you do and what cleaners you use. That would be a great DIY video.

[@scarboroughnorth]

Seconded! I remember it was on the do list but AMD wanted a dirty enough engine bay to clean. 😅

[@RoccoReviews]

@@scarboroughnorthyeah it was on his Camry Hybrid video a few months ago.

[@egx161]

I use Oil Eater spray. Works well and doesn’t discolor or attack anything. Plastic or metal.

[@Cripleclarence_1948]

@@RoccoReviews The Camry Hybrid AMD bought for himself and did the one-year review on?

[@might_e]

@@Cripleclarence_1948i've seen him say he was waiting for it to get dirtier before cleaning it but never one where he does it. maybe it's still in the works

[@jamesmchugo9422]

I’ve never seen the inside of a torque converter and no one has ever explained how one works so well. Thanks for the video.

[@AB-jk7tw]

As a mechanical engineer, your explanation of this much over-looked device was excellent. Well done!

[@thejimmyrig]

You cant say nice things to a mechanic as an engineer in public, next thing people will think mechanics and engineers are friends 😁

[@johnmadsen37]

I had a friend who was a mechanical engineer. And an alcoholic. I would not trust his opinion from authority.

[@BruceCarbonLakeriver]

yep same here and same opinion about this video, well done. And yes it is an engineering marble and completely underrated!

[@tahcogunworks]

Except he is wrong. All of it is wrong about the stator.

[@thejimmyrig]

@@tahcogunworks would you like to explain how it is? ive gotten good with every part of a vehicle except understanding how these magic doughnuts work.

[@edster612]

I've been in the auto industry for over 20 years. I think this might be the only time anyone has ever explained the inner workings of a torque converter. Well done, and I very much enjoyed it.

[@tahcogunworks]

Except he is wrong about the stator.

[@wkb21]

Explain please!

[@chuckconnors615]

??? @@tahcogunworks

[@chris4321das]

@@tahcogunworks Please explain.

[@jerryhubbard4461]

The magic of engineering. What I find interesting is how much stuff comes out of an automatic transmission. Amazing how they get all the parts in an automatic tranny. A lot of skill goes into taking a transmission apart and putting it back together and make it work. Hats off to guys like you that have the interest to do these things.

[@phyllisalderson6247]

Hi Jerry it’s amazing ,,, my learned everything about any kind of engine ,, electric all of in the navy ,,, it’s very interesting I still love learning bout ,, my dad taught me a lot ,, but not all ,, cause I’m a girl he said ,, he was good as the car nut guy.

[@TaijiArban]

As with most cars, I can take things apart within half an hour and take a whole week to put them back right lol

[@phyllisalderson6247]

@@TaijiArban ,,,, that makes sense ,, making sure all that stuff is where it’s supposed to be ,, great mechanics are very hard to find !!!

[@PedroBlazeArt]

Sorry to comment again, but this is the most thorough video in torque converters here. I couldn't be happier about finding this video. Thanks again.

[@OLDSCHOOLROGUE]

I’ve been an ASE certified technician and a Licensed A&P Aircraft Technician for 40 years……This video is possibly the best technical explanation I have ever seen!

[@johnmadsen37]

Lots of torque converters on planes?

[@OLDSCHOOLROGUE]

@@johnmadsen37 Perhaps you don’t realize ASE CERTIFIED means automotive tech?

[@stevensims3342]

98% of people have no idea how these work and half of those who even grasp the entirety of its function still boil it down to fluid dynamics. It's like one of those things that were designed but only a small number of people can engineer and build them. Really great video. Torque converters are amazing devices!

[@Nasio678]

I guess I’m part of the 2%😭🙏🏾

[@robertvanruyssevelt7159]

When I was a motor mechanic apprentice over 50 years ago automatics were not as ubiquitous as now. We were not taught to service or repair them - they were left to specialists. We were just told they had a fluid coupler. I am learning so much from the Car Care Nut! And this video gives another reason to do regular ATF changes (as opposed to so-called lifetime fluid).

[@PedroBlazeArt]

As a normal, average dude, this helps so much. Thank you for this video. I FINALLY understand why my car is acting up.

[@richardgalea9884]

A much appreciate this man for his clarity of mind in explaining complexity in a simple way…..Thanks The German inverter of the torque converter was Dr. H Fottinger. The first experimental converter was build in1908 and gave the maximum efficiency of 83% with a maximum torque ratio of 5:1. The Fottinger transmitter, as it was than called, used water as fluid medium as it was first used for marine purpose.

[@MartinStockel-k6f]

A top-notch video on how the torque converter works. You have the ability to break down parts and explain in a language that most people can understand on how it works.

[@AaronLevs]

Im a big fan from the Philippines who works on cars. Your youtube channel has really helped me a lot. Thank you and may Godbless you always.

[@ddawson8069]

...and you Filipinos really know how to keep cars running & running!

[@brianhind6149]

Thank you for an excellent "expose" of the torque converter. They are nothing new to me BUT......even an old guy 83 can learn something ! I started to laugh when you explained about the bypass that eliminated brake action on the drive wheels for those who wanted to do "burnouts ! God save us all ! Great video my friend, & I watch every video that you produce . You do your viewers a great service with you "NO B.S. " explanations and advice. I wish you every success with your own shop.

[@coltoncj1]

I’ve been a heavy equipment mechanic for 5 years now and never really understood how exactly a torque converter works until now! Thank you!

[@marblox9300]

Very smart engineers who designed this - and this man explains it better than anyone. Although I am still not an expert - at least I know a little more than I did.

[@kennyburaker9013]

Many thanks for taking the time to explain the torque converter and how it functions. I often wondered what the inside of one looked and all the components. We appreciate what you do for all of us.

[@wesfields9322]

AMD you look so passionate educating us about such an overlooked subject. Thank you for taking your time to do and share your wisdom

[@nyc8452]

Please, please do more of these educational videos my man - you are a natural teacher and these are difficult concepts for most people to understand properly - diagrams on a whiteboard aren't as helpful as seeing an expert with the parts in hand! The genius of your teaching is starting with the idea and then dealing with the problems. Most tutorials would simply explain what each part does, but if you understand the problems that inventors had to overcome, then you really start to understand the interaction of all of the parts.

[@phTeamHalb]

I've always been in awe with what the Torque converter has to accomplish - let alone figuring out the engaging and disengaging of the clutch, it needs to convert all the torque the engine is laying down to spin a shaft that can propel thousands of pounds under immense loads - just blows my mind. Thank you for this thoughtful explainer of how it accomplishes all that.

[@MrMopar413]

Awesome video from a retired heavy duty diesel mechanic. The one thing you talked about and we all know what happens inside a automatic transmission is-but we cannot see it is torque converter creep at a stop and low speeds. Their is a way-!!. On heavy equipment that use a torque converter assembly separate from the transmission but connected by what we call a trans-converter driveshaft you can actually see this principle working. Decades ago when I started working for a underground mining equipment manufacturer all the machines where set up this way. The first time in the shop that I watched this happen; I was totally memorized. Thinking that is cool to watch the trans-converter driveshaft do it’s thing. I never got tired of watching that trans-converter driveshaft spin and do it’s thing. It’s almost memorizing to watch as the engine speeds up and down. It’s totally fascinating to watch and see that principle of a automatic transmission in action. I tried to find a video of this setup but failed. Maybe a heavy duty diesel mechanic that works on underground mining equipment that reads my comment will make a video of a mining machine’s trans-converter driveshaft in action; it would be great. I’m long retired out of the business. But it is totally fascinating to watch.

[@frankbiz]

Great video!! Thanks for helping me understand how a torque converter operates. You are an amazing teacher.

[@cristianilie8857]

This video should be highlited as the top explanation video of the torque converter by KZbin! My deepest appreciation for all the work that you do!

[@simeon2851]

For once my eyes did not glaze over and my mind did not wander. Such a good teacher.

[@chriseverett5398]

This will be the most underrated videos of the year… what a shame. What a beautiful master piece of language expression, almost mathematically explained using simple words! GREAT VIDEO AMD!!!!

[@tomschmidt381]

Great torque converter tutorial. In our family we mostly have and have had manual transmission cars so I have not spent a lot of time figuring out how torque converters operate. I agree with your analysis, they are a marvelous piece of engineering.

[@PaniczAdam]

Great video about torque converters! Thank you!

[@dalemettee1147]

Back in the early 50's Chrysler had a "Fluid coupler" attached to a standard transmission with a manual clutch. You could shift the gear selector as a regular gear box. The only thing different is that you could select a gear and then NOT depress the clutch and the engine would not stall. The coupler would take over and you could operate the car as an automatic. It never did catch on .

[@swift4856]

Hi Yes I worked on early Volkswagons who had a similar thing. Early VWs had a manual transmissions with both a clutch and a torque converter but the clutch had no clutch pedal. The clutch was activated from the gear stick and it simply was fully engaged or fully disengaged. The clutch was engaged by pushing the gear stick down (which disengaged the clutch) before pushing the gear stick into gear and letting the gear stick up (which engaged the clutch again) while the torque converter kept everything separate until accelerating. It was known as a stick shift. I also wondered why it wasn't more popular.

[@Maybe-So]

In the late 70s Honda CVCC (if I recall correctly) had a 4 speed Hondamatic transmission, 2 automatic gears, then shift, then 2 more.

[@jima3129]

Yeah! I was in my early teens, and I had one of these. It was a Plymouth with that old great inline L 6 engine.

[@GaryH-pw9cm]

@@Maybe-So I think Chevy had an automatic transmission you had to shift once manually. It did not catch on. They went back to the automatic. Also, Chevy had a special transmission that shifted gears through use of a special converter. Finally had all the bugs out of it and worked great only to be discontinued. And who could forget the Buick Dyna flow that just used a special torque converter all the time. They worked super smooth but was a gas hog.🙂 The famous Hydro matic transmission never used a torque converter at all just a fluid coupling. One model of Hydro matic had two fluid couplings. 😉

[@thestardusters7640]

Still driving my 55 Buick with Twin Turbine Variable Pitch Dynaflow transmission. Someone once told me that that year Buick had the slowest acceleration from 0 to 40 and fastest from 40 to 80 mph.@@GaryH-pw9cm

[@theoriginalpauly]

I'm a technical educator, and I really like the way you explained the construction as the last point. I think the fluid flow and mechanical operation are much easier to understand as you presented them, and then the "backwards" construction really fills in how it works as a unit. This is the best explainer I have seen of the torque converter. Many thanks!

[@telwood15]

Didnt realise how relatively complex a modern auto was and the need to respect your car when driving and servicing. Thanks.

[@gwilli1754]

Super expensive, for a reason. About 1/4 of the cost of the whole car, in just a few plates.

[@BT-zw2ix]

Don't forget the engineers who designed them overtime with trials and errors in order to come up with this. And what we often don't see is the fact that what we consider as modern technology such as this (TC) has often been around for a long time ago back when there was no AI or computer-assisted designing, it was all about brain cells, eyes, hands, pencils and drawing board. We take it for granted but often don't think about the brilliant minds that made our lives much easier.

[@donaldendsley6199]

Modern Autos and Airplanes are a huge argument against simplicity equating reliability. what creates reliability is designing and maintaining for reliability not the complexity of the system.

[@johnarnold893]

@@gwilli1754 How do you figure that a torque converter is 1/4 the price of a vehicle. A 2015 Chevy Silverado with a Duramax the torque is less than a thousand bucks.

[@edwardcook7673]

Thank you very much! I truly enjoyed this video. To prevent fluid contamination I drain and fill my transmission every year. The fluid is relatively inexpensive and the transmission is super expensive. About 50% of the fluid is exchanged on the drain and fill. Also around town I drive in D3 mode and save the lock up feature for the interstate. 191k miles and so far so good. Thanks again!

[@ganormand]

Great video. I had 1950 Dodge with 3 speed manual on the tree, AND a torque converter-they called it Fluid Drive. You couldn't kill the engine even if you popped the clutch at idle. It was fabulous for teaching people to drive stick shift. On trips, you never really needed to shift-just leave it in 3d and go slow pokey off the line. Also had a 1961 Bentley with a GM turbo hydramatic in it.

[@starr_helix6770]

Brilliant. The mystery explained….and by someone who truly loves the subject matter. - the best way to teach. Reading some of the other comments here it looks like you’ve hit a rich vein of appreciation for understanding this beast…. We all just jump in, turn on, flick the shift and pull away….. mostly oblivious of the inner workings. Thanks for shedding light well done 👍👍👍👍👍

[@abot4694]

I have understood the basic principle of how a torque converter works but I've never seen it in that much detail. Thank you for this video. You truly are a gem to us car enthusiasts and DIY home mechanics.

[@robi4387]

Little did I think that I would spend 34 minutes listening to you talk about an automatic transmission but I'm glad I did and I found it very interesting and easy to understand, thank you

[@jdub976]

This was great. All my life I have worked on engines and everything on cars except transmissions. Had a very basic understanding of transmissions but nothing more. Always wanted a more detailed explanation about them but never had a chance to get it. Thank you.

[@WJV9]

Buick had an automatic transmission in 1948 they called the DynaFlow. It was an extremely smooth transmission that did not shift but used the Torque Converter to change the fluid ratio from standing start to full road speed. The transmission had only 1 planetary gear for the Low Range that was manually selected and also a reversing gear for Reverse movement in the Low Range. My dad had a 1949 Buick Special with a straight 8 OHV engine with a DynaFlow transmission. The Torque Converter was not very efficient when starting so if you wanted to accelerate quickly it was best to manually select Low gear and then shift into Drive when your speed got to around 35 or 40 MPH. The smooth start in Drive was handy on ice/snow however since it accelerated gently and you would not get wheel spin so easily. Thanks for your description of the torque converter components and how they work, one of the best descriptions I have seen.

[@terrysennhenn896]

I knew about all those parts that make up a TC but didn't know how they worked together till now. Many thanks for bringing it together.

[@whatsthatnoise954]

I agree with some of the other commenters. You did a very effective job explaining how these units work. I've watched a number of other folks try to explain torque converters over the past few years with much less success at making sense of it all. Thank you.

[@daveb495]

This is the most comprehensive explanation of a modern torque converter I've seen. Thanks! Now I also know why my 2016 Tacoma has that annoying shudder. Sure wish I'd known about this before the drive train warranty expired.

[@MrGentleNick]

The best explanation I have ever heard and seen. I have an Audi S3. And a friend at Audi R&D. He said, do not do the fast starts or burn outs, many want. Your car is set to test check parameters, it is not reduced to those sold after the reductions made before sent to sell for retail after you followed the things to do. More complicated than your S4 as needed less buttons to press to make unregulated, but still legal and no stages or chips needed

[@yunieskerjoseespinosamarre1174]

Thank You so much!!! No words to describe how much you help us, not only about mechanic, but also to listen and learn the cars language. God bless you 🙏

[@pajokard]

Wow! as DIY guy I had a nosebleed understanding how the torque converter works. But Ahmed explained it very well and probably better than most mechanical engineers. Thanks a bunch and God bless!

[@N20Joe]

I've blown several transmissions racing and it's almost always been when I'm at high stall speed to launch off the line, then have to stop and wait, but not wait long enough for it to cool down from the massive heat buildup of pushing the stall speed to max.

[@bernardshaw7585]

Thought I knew a little bit about the internal combustion engines and modern cars but every time I watch your channel I learn so much more.. appreciate you.

[@mserica6487]

Thank you for this. I knew what a torque converter does but I never had any idea how it worked.

[@rahulkalra8989]

I love how TCCN is such a connoisseur.

[@randomuser6306]

I added a Tru Cool tranny cooler to my Prado for the heat on abu dhabi. Was 120f in the desert last Saturday afternoon. 4lo, 4th gear, 8 psi in the tires, and the transmission fluid at the tq converter sensor never went above 175f. Amazing design.

[@billcrane2444]

That's the best explanation I've ever heard about how a torque converter works. How many people have been sold an entire, new transmission when all they needed was a new torque converter? I recently installed a super heavy duty, billet, triple disk TC into my tubo-diesel pickup. It's even more of a towing machine now. I really like knowing how things work because it helps diagnose problems correctly. Also, you're an excellent speaker and presenter who can keep your audience's attention. Thanks.

[@volvo09]

Great video! I always wanted to see how the lockup clutch works. That is a very small amount of clutch material, it's amazing how durable it is, like a single plate motorcycle clutch. It's also amazing how complicated automatic transmissions are, they are a work of art, even though I prefer manuals, at least i can appreciate something while wishing I had a clutch... Haha

[@MarkSmith-js2pu]

Well said!

[@NoahSpurrier]

There doesn’t need to be much clutch material because the fluid coupling transfers power until the input and output speeds are matched. The clutch doesn’t need to split like it does in a manual transmission.

[@Paul-uf2ou]

I have seen these beautiful pieces of engineering on the workshop benches over the years since I was a kid. Nobody could explain the inner workings other than be told they were fluid couplings. This was so very informative to me, I really appreciate this explanation in simple terms, great work, thanks!

[@matthiaslipinski2826]

Hello AMD, thank you so much for making this video! I saw your earlier video about the torque converter shudder and didn’t understand well enough how this happened. As an owner of a 2012 Camry that was actually affected by this problem this bothered me. Now, I have a much better idea why Toyota ran into this problem. Thanks a lot for your explanations!

[@brandonedwards4398]

Best video on torque converters I’ve ever watched. Thank you!

[@D3thM3tal]

Good job explaining the converter, I didn't realize that some of them had dampening springs but I guess it makes sense. The easiest way I've been epxlained how a converter works is basically a fan blowing at another fan - then toss in the clutch lockup and you're nearly there.

[@anvilsvs]

Fan blowing at another fan is a hydraulic coupling, not the same thing at all.

[@BuzzLOLOL]

OK, the stator to a fluid coupling is like the fulcrum to a stick... the stator makes the fluid coupling multiply torque as a 'torque converter' like a fulcrum turns a stick into a 'lever' that has more force...

[@David_Denali]

May favorite typa transmission

[@ExSkyCyclePilot]

I remember when locking torque converters started showing up in the early eighties, and when going up a grade, those early converters would lock, unlock, lock unlock, every few seconds. People would climb under their cars and disconnect a wiring harness on the side of the transmission to keep the converter from locking. This was a common issue on GM cars and trucks, which usually had large V8 engines, and the locking torque converter made little difference in the gas mileage anyway, so people didn't mind disabling the converter lockup.

[@catsaregovernmentspies]

I am thinking that in overdrive transmissions it won't shift into overdrive if it doesn't get a signal the torque converter locked up.

[@jamespaul4618]

Best ever video explaining HOW a torque converter works. Now I have a way better understanding of entire system. Video rated at 10/10 .1

[@camaro6810]

I really love this video and appreciate you taking a moment to do some general educating. I've always tried to learn more mechanically, had buddies who had dads that would tear everything apart and work together on it, they learned tons. I never had any of that, so everything I have learned has been by doing, or watching youtube etc. and that can be hard to find/figure out. You're a very good teacher and I hope you do more videos like this. Posi/limited slip rear ends is another good one, transfer cases etc. There is so much that we use everyday that we take for granted and have no clue how it works. I have watched every single video you have made since the beginning and I've enjoyed them all, even ones that I wouldnt normally watch or click on, I watch them all and learn and enjoy. Thanks, keep up the great work!

[@catsaregovernmentspies]

You can learn a ton by watching KZbin videos. My knowledge accumulated exponentially from KZbin in many areas.

[@sahrawix]

Sincere thanks for the detailed explanation, god bless you

[@ericchan7500]

Thank you Ahmed! You explained this very well and very clearly. This is something I always wanted to learn about. You have increased my knowledge tremendously, and I really appreciate all your hard work to produce these videos to educate us.

[@batrastardly4574]

Wow. My whole life I've comfortably plodded along by writing off what the torque converter did as pure magic. After watching this video I now have a great understanding of how it works ... but it's still magic! Thank you for this well done video.

[@theredwedge9446]

Just by changing the angle of the fins, the stator, the number of the blades and the physical size, all changes the stall rpm and increase the multiplication of power. Its so cool/

[@CycleGeezer-cq9lm]

Ive only had a basically foggy understanding of how auto transmissions worked and almost no idea of how torque converters woeked. This presentation of how torque converters work is the first time I understood what was being explained. Well and knowledgeably explained. Thanks so much for this!

[@khukman1]

Great explanation, making things easy to understand for the layman! Keep up the awesome videos

[@jima3129]

When i was young, many moons ago, i worked in a transmission repair shop.on the old hydramatics, we would take off the dust cover under the bell housing, and drill and tap the torque converter to put a small plug in it. This was the only way to completely drain and change the transmission fluid. Great Video!

[@GaryH-pw9cm]

Leaving the drain plug out of modern converters must have saved the manufactures $1 dollar each. A million cars they saved a million dollars. But still I would have paid the dollar to have a drain plug on the converter.

[@jima3129]

@@GaryH-pw9cm It must be the same bean counter who deleted the drain plug and the under hood dip stick from the transmission on Fords. Given the chance, I would ring that guy's neck.

[@BuzzLOLOL]

1940 - 1964 HydraMatics had a 1:1 fluid coupling, not a 2:1 torque converter...

[@jima3129]

@@BuzzLOLOL Thank you, I guess I called it the wrong thing. I was only 14 at the time. Graduated HS IN 1964.

[@bruceroberts529]

Absolutely GREAT review! I always wondered about the "electronic lockup" and now I know the principle. I thought the video title was misleading but knowing that the manufacturers keep improving such an old component it makes sense. In my younger years I was hell on components but now I am a really gentle driver. I don't recall you doing a FoMoCo comparison to Toyota. I would like to see that and how much they are similar. We have a 2016 Rav4 Limited Hybrid 130k miles and a 2015 Lincoln MKZ Hybrid 50k miles. For us they both work very well. Take care and God bless.

[@sunking2001]

AMD is a natural professor. He would excel as a teacher in front of a master class on auto mechanics. A video like this one shows even more the importance of keeping clean fluid in your tranny. Same with the engine.

[@kc8jtg99]

Great explanation of a big mystery. I had the torque shudder at 25 mph on my 2012 Honda CRV. The dealer did a software update that seems to have fixed it.

[@RationalCreed]

If that’s a US version then was it a CVT transmission?

[@Visionery1]

I drive a '92 MB W124 230E, what I love about the auto box is the ability to hold the car on a hill at idle - without touching the throttle - it's as good as a handbrake and a pleasure in our hilly surroundings.

[@kaafromoz]

A fantastic video AMD TY, I loved it as you explained it so very well. Like always I learn something new and something explained brilliantly. TY Sir Keep Safe Keep Strong 🦘🦘🦘🦘💖💖💖💖

[@swift4856]

Wonderful invention. An interesting early type of automatic transmission was that Early VWs actually had a manual transmissions with both a clutch and a torque converter but the clutch had no clutch pedal. The clutch was activated from the gear stick and it simply was fully engaged or fully disengaged. The clutch was engaged by pushing the gear stick down (which disengaged the clutch) before pushing the gear stick into gear and letting the gear stick up (which engaged the clutch again) while the torque converter kept everything separate until accelerating. It was known as a stick shift.

[@redhand7104]

Great Informative video! Could you make a video explaining the difference between the 6 speed and 8 speed transmission and the durability of the 6 speed. Or in other words, what have they done to update the operation of the 8 speed.

[@DruMcDoo]

Must take my hat off to you for explaining in simple terms how a torque converter works. The guy who invented this was a genius. It's also had amazing engineers refining it to what it is today. It's so easy to take these things for granted. Never realised so many advancements had happened resulting in better fuel economy. Wonder how much difference there is now between advanced torque converters and traditional gearboxes when it comes to miles per gallon, especially when towing?

[@rightlanehog3151]

AMD, This lesson will be very handy if I ever give up my manual transmission. 😉

[@rightlanehog3151]

@@kimbuck-2 It won't be any time soon 😁

[@Zool-S]

I am a mechanic who has been working for a long time and has practical experience One of the best information provided for fun and learners of the profession Thank you very much😍

[@tworegon]

Oh how I remember my 85 El Camino with a torque converter lock-up problem. It locked up way too soon (around 27mph) causing the engine to lug. I had to go into arbitration with GM to get it fixed - at another dealership - who did finally fix it. On that El Camino, it shouldn't have locked up before about 38mph. But the first dealership tried to tell me it was normal - "they all do it" BS.

[@BuzzLOLOL]

My '86 Monte Carlo LS locked up about 36 MPH...

[@midas7394]

Your explanation of how a torque converter actually works is so fascinating that we have watched it a few times to absorb the technology. Thanks for sharing.

[@thomasroberts8024]

Ha! Torque convertor shudder. A highly predictable occurence in Towncars, Grand Marquis, Fairlane 500's, etc. from 2010 and earlier. And usually at about 45,000 miles. Customers usually had difficulty describing the sensation, but this being Texas, I always asked one question. "Did it feel like you had just run across a cattle guard?" (Those steel tubes in a frame running laterally across a dirt road where it crosses through a fence) "EXACTLY like that," most would say. At that point I would explain that deteriorating fluid was to blame and sell a transmission flush. That took care of most all the cases but occasionally they were too far gone and a new convertor was the fix. No salesman would dream of mentioning that flush as preventative maintenence, but despite it not being listed as such in the owners' manuals, we recommended it at 30,000 and cars that received that operaton never developed the shudder.

[@zacinnc78]

what about brand new vehicles that have the shutter ?

[@thomasroberts8024]

@@zacinnc78 Do not know. My only experience with the malfunction was on Ford V8 cars. The ones that went away about a dozen years ago. Last produced in the 2010 model year.

[@zacinnc78]

what i meant was did u deal with ones that shuddered even when they were brand new...not so much todays models specifically(even though im looking for answeres for my 2022 tacoma that has the shutter since day 1)

[@thomasroberts8024]

@@zacinnc78 We never had a new one with the concern. It took some time for the fluid to deteriorate to where the clutch took several rapid applications (generating the noise) before it would hold. I've never had a look at a Toyota lock-up device so I can't speculate on a cause. When I use the term clutch, it's because the Ford unit really was a miniature pressure plate/disc thing, good to transmit only enough torque to pull the vehicle through the air at a steady speed. Ask any more from it and it unlocked. I think Toyota owes you a new one if you're still in warranty, and being a 2022, it should be. Doesn't powertrain wty go to 60k?

[@MrYAMAHA32177]

Excellent explanation. There are times that I find myself idling for extended periods, such as food drive throughs, known extremely long stop lights at intersections (3+ minutes), rush hour traffic sitting nearly stationary for 5 minute periods, for whatever reason waiting for something but needing to leave the vehicle running, etc. etc. I sometimes shift into Neutral and feel the engine relax a little and let the pads cool down while slightly away from the red hot rotors.

[@keithsanders2792]

AMD, unfortunately my 2017 RAV4 XLE recently had to have the torque converter replaced, and I baby my car. Also, tranny fluid had been changed a year before TC replacement at 60,000 miles.

[@user-tb7rn1il3q]

I’m glad I bought the 19 RAV4. It’s been bulletproof, knock on wood. I now have almost 100k miles.

[@jonathanratliff4780]

@@user-tb7rn1il3qkeep tranny serviced with trans fluid from dealer oem fluid and will last LONG time

[@ruthnoya8424]

Was it a drain and fill, flush or fluid exchange?

[@keithsanders2792]

@@ruthnoya8424 I think a flush and fill.

[@kariymchristopher6986]

I'm here because I want to troubleshoot my 07 yaris transmission, so I wanted to know how the converter really works other than what I was thought 20+ years ago, and this was a great help. Your videos are always interesting, and fill with information.

[@TundeEszlari]

Amazing video.

[@gbii2612]

ive always have been confused by automatic transmissions. any time i would look something up or have some one explain them to me it always just confused me and it just over whelmed my brain. however the way you broke things down made the most sense i could ever dream of!! im still a bit shady on some concepts like shifting and reverse but im more aware about what is actually happening! most educative video ive seen in a long time!!

[@rodh2168]

My 1990 Subaru Justy was the very first modern production vehicle to use a CVT. Subaru called it the ECVT. The transfer of power from the engine to the ECVT was via an electromagnetic clutch that was activated by a switch on the accelerator. Very cool. I prefer it over a toque converter.

[@jgn593]

Nope Daf was the first.

[@rodh2168]

@@jgn593 I said "modern". The Daf was 1954 using a leather belt.

[@jgn593]

​@@rodh2168than it was the Volvo 300 series.

[@rodh2168]

@@jgn593 Same vehicle different name. Volvo bought Daf, short for daffodil. Still not "modern". My Justy had two computers. One running the clutch and ECVT, the other running the rest of the vehicle. And it was 2-door 4WD. Only 8 of this configuration sold in Canada. Manual for clutch / ECVT was 5 inches thick. Ask me how I know.

[@tamavatia02]

Great information it’s helped me understand why my 2001 ml320 that was contaminated with koolant was not working. I flashed it six times and cleaned the valve body adding the correct transmission oil made it work. I am in American Samoa

[@stuntdouble5933]

Thank you for thorough research. Could you at some point in time create a video for the most common issues with Lexus trunk locks not working, both with the remotes and switch. I have a 2006 LS430 that I cannot figure out. Yes, I've checked everything... And that car has more fuse box areas than any car I've ever owned. After 230k miles, something got to give.❤

[@jluna1279]

@sruntdouble5933 not 100% sure but i believe there is a cancel button in the glove box for the trunk lid. check and make sure its not activated.

[@stuntdouble5933]

@jluna1279 thanks, this model has it right next to the trunk open button left of the steering wheel...yes that has been looked at soon after we developed this issue a little over a year ago. thanks again

[@-DC-]

The Lock up Clutch was absolute Witchcraft back in the 80's, A 4 speed Auto with Lock up still seems pretty much like it covers most people's requirements.

[@ahmedsaid2937]

Brother. I appreciate your videos. What is your opinion about 2010 toyota venza awd . Thanks

[@ronbenson8484]

Perfect clear explanations. I learned so much. You are a natural teacher.

[@ybloodyangely]

Thank you for the very informative video. Do the Toyota's with a CVT transmission use the same style of torque converters or are they different? Specifically for the CVT with the 2ZRFE engine if you know.

[@tidus_on_crack6570]

As someone who has always taken an interest in cars and how they work, I have always been bamboozled by automatic transmissions and torque converters, Even after developing a solid understanding of the principles behind manuals and gas engines, diesel engines, rotary engines, suspension, cooling system, alternators, A/C, engine timing, differentials you name it. The Automatic transmission has still eluded me, no matter how many explanations I've watched I could not wrap my mind around how the torque converter engages and disengages the engine from the transmission, aswell as how it actually converts torque. Your explanation while simple has finally after many years made it click in my mind the fundamental principle that allows the automatic transmission to function. Your Willingness and ability to explain automotive engineering is a gift to the entire industry. I hope you know your efforts aswell as your teams efforts are greatly appreciated.

[@Judge_Dredd]

All my cars have manual gearboxes. An automatic transmission turns hopes and dreams into extreme disappointment.

[@TheScrubmuffin69]

And speed if you're working with some horsepower. Faster than manuals but not as fun

[@2148aa]

Gives a man something to do with his hands.

[@Judge_Dredd]

@@TheScrubmuffin69 Flooring an auto is underwheming, not involved, wasteful, and boring, and a manual is more than just changing gear, you can better balance the car through corners and bends, through hazards, in poor weather, and also change your driving to short shift for economy. There is a reason why racing cars are manual, there's a reason why advanced car control is best achieved in a manual, there's a reason why emergency vehicles here in the UK are manual and driver training is so long, strict, and advanced. Automatics are for beginners and the lazy, people who think they can drive and discover they can't, and that is why we have two separate tests for manual or automatic, pass an automatic driving test and you're only allowed to drive automatic cars, pass a manual test and you can drive any car, because you're better trained, and a better driver. Countries that think there's no difference between the two, and think automatics are better, have worse per capita, per mile, death rates on their roads, because people aren't trained properly to drive.

[@Judge_Dredd]

@@2148aa I would argue I could steer better with my knees than anyone that drives an automatic using their hands, and so can my wife, because we're more aware of the weather and road conditions, and more aware of hazard perception, and skid control. Theory and training, starts with learner plates and a qualified driving instructor; just that and I would argue any UK Driver is 'advanced' compared to any US Driver, even your US Police. In terms of advanced training in Roadcraft, skid pan, off-road, and emergency driving using commentary in front of an advanced instructor, then we're incomparable. It's not just giving 'a man something to do with his hands', our women are better than you as well.

[@2148aa]

@@Judge_Dredd sticks and stones.........

[@ArifGhostwriter]

Thank you for taking the time to deep-dive into a piece of engineering that has literally made the World go round. It's still astounding to me - all these marvels of engineering solutions - which will become defunct if we do really move to EVs Worldwide.

[@davidgrisez]

This is a good description and explanation of the torque converter on an automatic transmission car. It is possible that one of the most complex torque converters historically was used on the 1957 to 1960 Chevrolet cars that was known as the turbo glide transmission. This torque converter had 5 elements, it had one pump, one stator that could change pitch and 3 turbines. One turbine for first gear another turbine for second gear and a final turbine for third gear.

[@GaryH-pw9cm]

Yes and there are still a few around. Too bad it was discontinued as the idea had a lot of promise. I think Buick had a switch pitch converter also, but I am not sure how good they worked. Some of these old designs should be looked at for modern cars. There could be some manufacturing cost benefits as well as some fuel savings in these old designs by using today's computer controls. Maybe you don't need a complicated ten-speed transmission after all.

[@ottomechb]

Best short but comprehensive video describing a torque converters I've ever seen in 40 years of working on transmissions. I have tried many ways to describe this to customers. From those pulling to heavy a load in to high a gear to those that have had too much cam installed in an engine for a stock torque converter. I will use your video as an explanation. Thanks! Very entertaining.

[@BuzzLOLOL]

Also, the stator to a fluid coupling is like the fulcrum to a stick... the stator makes the fluid coupling multiply torque as a 'torque converter' like a fulcrum turns a stick into a 'lever' that has more force...

[@donnmckinnon]

Wow! Your ability to explain something so complicated in understandable terms is amazing. Thanks

[@tahcogunworks]

Except he doesnt know how a stator works. Flawed video.

[@dkk1404]

I have watched many videos on torque converters, trying to figure out how exactly is the mechanical construction of this device and I think your explanation is the best, thanks again for sharing this knowledge.

[@scipher99]

Everything about this guys demeaner, and friendly smile makes me want to sit down and share a 12 pack of Modelo's and learn about cars and the inner workings. Great videos!

[@judyreyjumamoy]

i watched so many 3d animation in the past that i still have no clue how it works that i gave up but this sir is pure gold thank you

[@Terost36]

Thanks for taking the time from your busy shop schedule to explain how the torque converter works.