He'd teach everything wrong, thermostat opens too late will cause engine to overheat, open loop is when the car runs off a pre-set program in the computer, closed loop is when the car takes all the sensor data and runs it off the inputs, the car is always monitoring the sensors but ignores them till the oxygen sensors becomes active
That wouldn’t be a good idea. Because then it would keep from helping people who really need his help and instead cater to the crowd the “producers” want
I think I speak for all of us when I say we need some full length videos man! I know very little about cars but the way you explain things makes me understand more and want to learn more.
I’m a car guy myself, however it’s my hobby not my trade so there are some things that I have to send my car to the mechanics to. That could be because idk what I’m doing, to intimidated by the task, or simply don’t have the time. My personal mechanic is a lot like this man here… incredibly honest and reliable. Could not recommend the guy enough. My father has been going to him for years and I’m continuing the tradition. Having an home mechanic is an extremely valuable thing to have in your arsenal. It will save you a lot of time and aggravation
This guy, the way he explains his craft and what is going on with this car, is absolutely brilliant. Very smart, very knowledgeable, and probably an absolutely incredible teacher. I like him.
Unfortunately, its not even close. I know he's a very nice guy, but I have to call BS on this one. If you read my other post, I explain it all, and I show you how to prove it so you don't have to take anyone's word, including mine.
I had to look up your garage to see where your located People of Houston Texas you are bless to have this Automotive Super Hero in your presence love your channel
This is a very good, truly simple explanation, recounted at the customer’s level of understanding. Super job, great customer service. You have the ability to be a people person while being a great technician. It’s a rare combination in our business.
This man is great!!! I've listened to mechanics try to explain this for years and none of, we the people could understand what the hell the mechanics were talking about. This man made it simple enough for a 5th grader could understand!!! Thank you, Sir.
It keeps getting more sophisticated too. If/when I start having issues with my newest car, I will have to do a lot of research. I can't afford to pay anyone when I own as much as I do.
@@travisjernigan8529Almost every vehicle goes back to the basics. I learned from my pop who was a Diesel mechanic, and just kept up with the changing technology and equipment to troubleshoot. ( I am a "shade tree" mechanic) that fixes any vehicle and now have learned about the electric vehicles scooters,motorcycles, and cars. Battery building is next on the list.
😎🏁 best explanation for open and closed loop that I’ve ever heard. Thank you for making this information easy to understand for your customers and your viewers. 🏁😎
Open loop is when the computer uses preprogrammed tables for fueling and timing. Closed loop is when the fueling and timing are fine tuned using sensor inputs.
Correction the check engine light come on when a component fails on 3 drive cycles. When it get triggered right away is only when there no signal to that sensor at all or it completely out of range.
Bingo! Best way I’ve seen it put! It’s hard to dumb things down to customers and this is great for all those mopar people who come in with a CEL for coolant temp lol
I got a missing cylinder #4 until my escape reaches a certain temp it runs like crap soon as it warms up it starts running better, I've ordered a coil pack, already changed the plug , nice video
The gentleman has a way of engaging people with his delivery. If the manager of that place is reading this, please make this guy your trainer. He's too good for management. He should train your managers. So be very nice to him. Otherwise your knowledge level will fall dramatically. I also want to hear that he's making $35 an hour minimum.
Pretty much. In closed loop (engine warm,cruising down the road) the PCM typically monitors the O2 sensors (along with TPS,MAP/MAF,temp,transmission gearing,etc.),to control the fuel,but only after the engine is up to operating temperature. In open loop,like a cold start,the PCM typically relies on preset values for fuel and makes a "best guess" at keeping the engine running until it's warmed up and the (O2) sensors are all ready. If your thermostat or temp sensors are bad,obviously that will interfere with that process. Again,that's the simple version,and different cars will be different. Some may be more or less complex,and use more or less sensors than others.
Overall, you have the right idea but a lot of your details are wrong. Open/closed loop has nothing to do with engine temperature or coolant temperature. Its only about O2 sensor and cat temperature. There's absolutely no guesswork involved. If you read my other post, I explain it, and I show you prove what I'm saying so you don't have to take anyone's word, including mine. Yes, my words are a bit harsh, but there's too many Scotty Kilmers on the internet giving bad advice.
Show this video to Eric and ask for his opinion on it. I guarantee you'll be surprised. He's one of the few people on youtube that actually knows what he's talking about. There aren't many, but he's definitely one of them.
Kinda true...3 factors determine when it goes into closed loop. Coolant temp. Cat temp. And a pre-determined clock has to time out. Once all 3 are met it can then go to closed loop.
At present my check engine light is on, took it to my mechanic but didn't diagnose the problem, now maybe I would go to the auto parts and other that parts he mentioned as I have a little knowledge of what he is talking about
The explanation for open loop and closed loop could use some work. Open loop is when the computer controls how much fuel is injected based on pre programs constants. Closed loop is when it is co tried based on the reading from certain sensors.
I could just as easily say, I can't believe some people actually think the thermostat has anything to do with open and closed loop. And I would be right.
Can I take my car to this guy? The last place I took my car had no idea how to fix my car. They are strictly a remove and replace garage. Oh yeah, it was the dealership. They wanted to replace everything having anything to do with my problem. To be fair it was an electrical problem. I suggested they check the fuse box. They insisted it couldn't be that as it was the first thing they checked. I doubt that as I had put a piece of tape over the fuse box cover before it took it on. The tape is still in place. Oh, and they never could fix the problem.
this is a problem with performance thermostats too, unless you are on the track or able to change the closed loop temp in tuning, it might not go into closed loop on the streets
Open and closed loop have nothing to do with the thermostat or engine temperature. And you certainly can't change it with tuning. If you have a racecar, it shouldn't be an option unless you are running factory electronics. Before you tell me I don't know what I'm talking about, read my post from yesterday. I go over what open/closed loop really is, and I show you how to fact check the information in my post so you don't have to trust some stranger on the internet, including me.
@@AT-wl9yq i guarantee you can set parameters for open loop or limp mode on any standalone like motec. the ecu reads all the sensors voltages and once they hit certain parameters the voltage goes up and once the ecu sees a certain voltage from all of them it goes into closed loop, and yes it does look and factor engine temp through the ect sensor most of the people who really know what they are talking ab will have open discourse and not tell people to just listen blindly
@@AT-wl9yq i think you really think people saying the ecu is reading the thermostat and deciding based on that which is low level no perception type thinking the thermostat controls when the cooling system is open and if it opens too early it will never hit proper operating temp and thus never hit closed loop, it’s not ab wether the ecu is reading the thermostat or not
@@zander2541 Here's the silly part of your argument. This is basic OBD2 theory of operation. Every word I said can be verified by referencing a textbook. "the ecu reads all the sensors voltages and once they hit certain parameters the voltage goes up and once the ecu sees a certain voltage from all of them it goes into closed loop, and yes it does look and factor engine temp through the ect sensor" That's the best word salad I've seen all say. You can continue to run your dog stupid, know nothing mouth, but what you can't do is back that statement up. Show me a reference from a credible source, and I'll give you an apology. You don't know enough about engine diagnostics to have a conversation with me. Your comments are either fabricated or you are getting your information from people that know less than you. If you need some help, read my other post in this discussion. You can use that for a real reference on what open and closed loop is. I bet you'll just make up more stuff in an attempt to look like you're not as dumb as you appear to be. Good luck with that.
You could teach a automotive class , because you break things down for anybody. Keep doing your thing bro!
He'd teach everything wrong, thermostat opens too late will cause engine to overheat, open loop is when the car runs off a pre-set program in the computer, closed loop is when the car takes all the sensor data and runs it off the inputs, the car is always monitoring the sensors but ignores them till the oxygen sensors becomes active
Tech schools pay a fraction of what we make in the field. That's why most of the teachers are retired techs.
This guy deserves a raise... in reality most mechanics can't explain this, being able to fix something and explain it is a gift
Idk lol can agree this guy is great but anyone running their own shop has to be able to communicate with customers.
The way you just clearly articulated that information will stay with me forever
I really wish someone would create a tv show for this man. Short and sweet,without stupid jokes, tool and parts throwing and bad singing.
#Scotty Or at least his modern day videos w/ how wishy washy they can b.
Hey, but I love stupid jokes
That wouldn’t be a good idea. Because then it would keep from helping people who really need his help and instead cater to the crowd the “producers” want
Mechanical Engineer here. This dude just spoke 1000% facts.
a mechanical engineer shouldnt know anything about open and closed loop transfer functions😅
🍻
Well well well, the Mechanics archenemesis rears it's ugly head.
@@Thor_Asgard_🤡
An Engineer should understand mathematics better than to say 1000 percent FACTS.
I think I speak for all of us when I say we need some full length videos man! I know very little about cars but the way you explain things makes me understand more and want to learn more.
If he made a channel all of us mechanics would be out of work! 😂
@@minty2409 😬😬 I can see the conflict of interest… okay. Let’s limit it to 5 minute videos.
Tua what are you doing watching the mechanic channel!! Should be getting ready for next season
Your garage should be part of Discovery Channels show with Daves Auto Center!
❤
Facts and car doctor
Forget RUclips shorts. This man needs his own TV channel.
This mechanic is honest enough to explain to you speaks volumes about his work ethic cool 😎
When i try to explain this to people they look at me like i have 3 heads. Thank you!!!
PLEASE MAKE THESE EXCELLENT VIDEOS LONGER🙏
Really learning a lot about cars from this dude. That makes a lot of sense why you would get that engine light on
Honest mechanic when I see one 🤘🏻
Nothing but positive vibes with comments and everyone this is what we need right here ! Yesss sirrr
I want this guy maintaining my car
It will cost you
Move to Houston.
I’m a car guy myself, however it’s my hobby not my trade so there are some things that I have to send my car to the mechanics to. That could be because idk what I’m doing, to intimidated by the task, or simply don’t have the time.
My personal mechanic is a lot like this man here… incredibly honest and reliable. Could not recommend the guy enough. My father has been going to him for years and I’m continuing the tradition. Having an home mechanic is an extremely valuable thing to have in your arsenal. It will save you a lot of time and aggravation
Awesome breakdown for something most mechanics will just chalk up to “bad thermostat”
This guy, the way he explains his craft and what is going on with this car, is absolutely brilliant. Very smart, very knowledgeable, and probably an absolutely incredible teacher. I like him.
Your explanation is on point
Unfortunately, its not even close. I know he's a very nice guy, but I have to call BS on this one. If you read my other post, I explain it all, and I show you how to prove it so you don't have to take anyone's word, including mine.
@@AT-wl9yq i agree with you sir not even close
I have my a s.e
Love listening to you and what you teach and you put it so clearly. Keep it up teaching and education.
I was an auto mechanic for 32 years I like this guy he at least explains a lot for the people that really want to learn
Man, you are GREAT, learning more with each post I see, thank you
I love you!!!! You are honest and kind heart!
I had to look up your garage to see where your located People of Houston Texas you are bless to have this Automotive Super Hero in your presence love your channel
Thanks I didn’t know he was in Houston, Texas
This is a very good, truly simple explanation, recounted at the customer’s level of understanding. Super job, great customer service. You have the ability to be a people person while being a great technician. It’s a rare combination in our business.
You need your own tv show!
This man is great!!! I've listened to mechanics try to explain this for years and none of, we the people could understand what the hell the mechanics were talking about. This man made it simple enough for a 5th grader could understand!!!
Thank you, Sir.
You a great teacher make me want to be a mechanic.
You and Dave’s auto ..,2 knowledgeable, honest, professional super mechanics..
Its insane how cars became this advanced
Yup it’s been like this for a long time tho. The goal is to warm up the car asap because that’s when the emission parts start working.
It keeps getting more sophisticated too. If/when I start having issues with my newest car, I will have to do a lot of research. I can't afford to pay anyone when I own as much as I do.
@@travisjernigan8529Almost every vehicle goes back to the basics. I learned from my pop who was a Diesel mechanic, and just kept up with the changing technology and equipment to troubleshoot. ( I am a "shade tree" mechanic) that fixes any vehicle and now have learned about the electric vehicles scooters,motorcycles, and cars. Battery building is next on the list.
Best videos on RUclips thank you for your time!!
😎🏁 best explanation for open and closed loop that I’ve ever heard. Thank you for making this information easy to understand for your customers and your viewers. 🏁😎
Reminds me of a mechanic who worked with my Dad. Gr8 man.
One of the best mechanics on YT.
One of? Who’s better? 😅
Bro, I'm becoming a mechanic just listening to this guy.
I'm a recently qualified Mechanic. Can I come work and learn more from you? Your knowledge and breakdown of cars is unbelievable. You genius
Open loop is when the computer uses preprogrammed tables for fueling and timing. Closed loop is when the fueling and timing are fine tuned using sensor inputs.
Not even close.
@@AT-wl9yqtell us why that statement is wrong
Correction the check engine light come on when a component fails on 3 drive cycles. When it get triggered right away is only when there no signal to that sensor at all or it completely out of range.
Great job. People don’t realize even things like thermostats wear out.
Well explained…… you must be an amazing mechanic! Thank you
Dude I wish I you as my service technician in Dallas u are very good 👍 at breaking down & explaining complex car issues great video presentation 💯👍👍
Best mechanic ever🏆🏆🏆💪💪💪
Bingo! Best way I’ve seen it put! It’s hard to dumb things down to customers and this is great for all those mopar people who come in with a CEL for coolant temp lol
I got a missing cylinder #4 until my escape reaches a certain temp it runs like crap soon as it warms up it starts running better, I've ordered a coil pack, already changed the plug , nice video
You’re so knowledgeable and do a great job explaining this.
That being said, new cars and still confusing lol
Well put well Said I understood him completely 👍
Great explanation 👌
The gentleman has a way of engaging people with his delivery. If the manager of that place is reading this, please make this guy your trainer. He's too good for management. He should train your managers. So
be very nice to him. Otherwise your knowledge level will fall dramatically.
I also want to hear that he's making $35 an hour minimum.
Shows how intelligent you are even a child could understand that
Great job my friend!
I love seeing good techs getting noticed. There's so many bad people in the industry giving us a bad name. Good on you man
Keep up the awesome job, very informative and very simple explanation 👏 👍
I wish you would do longer videos and not just shorts. Love the channel!
Great explanation
Thermostat could also be stuck open which causes over-cooling
Or they could delete the code and drive it until it becomes a legit problem. 😂😂😂😂 Solid info my friend.
Thank you, sir!
This guy knows what he is talking about.
🙌🏾Outstanding.
Great tip!
You sir are a true pro 🔧
Pretty much. In closed loop (engine warm,cruising down the road) the PCM typically monitors the O2 sensors (along with TPS,MAP/MAF,temp,transmission gearing,etc.),to control the fuel,but only after the engine is up to operating temperature. In open loop,like a cold start,the PCM typically relies on preset values for fuel and makes a "best guess" at keeping the engine running until it's warmed up and the (O2) sensors are all ready.
If your thermostat or temp sensors are bad,obviously that will interfere with that process.
Again,that's the simple version,and different cars will be different. Some may be more or less complex,and use more or less sensors than others.
Overall, you have the right idea but a lot of your details are wrong. Open/closed loop has nothing to do with engine temperature or coolant temperature. Its only about O2 sensor and cat temperature. There's absolutely no guesswork involved. If you read my other post, I explain it, and I show you prove what I'm saying so you don't have to take anyone's word, including mine. Yes, my words are a bit harsh, but there's too many Scotty Kilmers on the internet giving bad advice.
Easily understood 👌🏾
Great job 💪🏾
As a guy N my church used 2 say, "Make it plain sir." 🤔👌👍🏽
Well spoken
So we'll explained
So easy to understand your videos and learn
Thermostat is a cheap fix.
A shady mechanic could squeeze a boatload out of someone not aware of things like that.
Good guy, this fella.
This a good dude man.
You and Eric from South Main Auto need to open a shop together in my town!
Show this video to Eric and ask for his opinion on it. I guarantee you'll be surprised. He's one of the few people on youtube that actually knows what he's talking about. There aren't many, but he's definitely one of them.
Thank you 👍 for what you explain you are very good at it Brother and you should think about teaching in time !!!
Kinda true...3 factors determine when it goes into closed loop. Coolant temp. Cat temp. And a pre-determined clock has to time out. Once all 3 are met it can then go to closed loop.
Thank you!
Excellent
A1 explanation brother.
Usually the Thermostat opens too soon, causing the engine to run cold and stay in open loop.
You explained that perfectly
Very informative, love the videos
At present my check engine light is on, took it to my mechanic but didn't diagnose the problem, now maybe I would go to the auto parts and other that parts he mentioned as I have a little knowledge of what he is talking about
Ppl dont understand that as simple as this sounds is hard to find the actual cause of the check engine
I hope this guy does some teaching. He explains things in short consise terms.
HONEST & SMART 😊
Seen the other part to the clip and you’re a cool dude
Most thermostats break in the OPEN position not necessarily in the closed position. Meaning the engine is running BELOW proper operating temperature.
Yeah right, that explanation wasn't too confusing at all. 😏😉
Of course it was. His explanation was wrong.
I think the pcm monitors every sensor always but does not use the o2 sensors for fuel control until they are hot enough to work properly.
Your freaking awsome man
That's why I like the old mechanical engines Electronics that's why the junk yards is so full of cars you can take that to the bank😅😅
Hey I work on car this guy I say prayers for he's a good guy i pray he makes millions my brother.
Very impressive, I'd hire this guy to fix my car any day
Good God Almighty I used to have this problem in the mid-80s X body GMS
What bob ross was to painting...this guy is to mechanics...he could open a national chain...people would take there cars here before dealerships...
A great teacher is worth 10,000 mediocre professors.
The explanation for open loop and closed loop could use some work. Open loop is when the computer controls how much fuel is injected based on pre programs constants. Closed loop is when it is co tried based on the reading from certain sensors.
Out of all the mechanics I watch this bro here explains it in a way a human can understand lol
I can't hardly believe some people don't know how to check or change a thermostat!
I could just as easily say, I can't believe some people actually think the thermostat has anything to do with open and closed loop. And I would be right.
Can I take my car to this guy? The last place I took my car had no idea how to fix my car. They are strictly a remove and replace garage. Oh yeah, it was the dealership. They wanted to replace everything having anything to do with my problem. To be fair it was an electrical problem. I suggested they check the fuse box. They insisted it couldn't be that as it was the first thing they checked. I doubt that as I had put a piece of tape over the fuse box cover before it took it on. The tape is still in place. Oh, and they never could fix the problem.
Who knew Andrew Bynum worked on cars😂😂
this is a problem with performance thermostats too, unless you are on the track or able to change the closed loop temp in tuning, it might not go into closed loop on the streets
Open and closed loop have nothing to do with the thermostat or engine temperature. And you certainly can't change it with tuning. If you have a racecar, it shouldn't be an option unless you are running factory electronics. Before you tell me I don't know what I'm talking about, read my post from yesterday. I go over what open/closed loop really is, and I show you how to fact check the information in my post so you don't have to trust some stranger on the internet, including me.
@@AT-wl9yq i guarantee you can set parameters for open loop or limp mode on any standalone like motec.
the ecu reads all the sensors voltages and once they hit certain parameters the voltage goes up and once the ecu sees a certain voltage from all of them it goes into closed loop, and yes it does look and factor engine temp through the ect sensor
most of the people who really know what they are talking ab will have open discourse and not tell people to just listen blindly
@@AT-wl9yq i think you really think people saying the ecu is reading the thermostat and deciding based on that which is low level no perception type thinking
the thermostat controls when the cooling system is open and if it opens too early it will never hit proper operating temp and thus never hit closed loop, it’s not ab wether the ecu is reading the thermostat or not
@@zander2541 Here's the silly part of your argument. This is basic OBD2 theory of operation. Every word I said can be verified by referencing a textbook.
"the ecu reads all the sensors voltages and once they hit certain parameters the voltage goes up and once the ecu sees a certain voltage from all of them it goes into closed loop, and yes it does look and factor engine temp through the ect sensor"
That's the best word salad I've seen all say. You can continue to run your dog stupid, know nothing mouth, but what you can't do is back that statement up. Show me a reference from a credible source, and I'll give you an apology. You don't know enough about engine diagnostics to have a conversation with me. Your comments are either fabricated or you are getting your information from people that know less than you.
If you need some help, read my other post in this discussion. You can use that for a real reference on what open and closed loop is. I bet you'll just make up more stuff in an attempt to look like you're not as dumb as you appear to be. Good luck with that.
Remarkable
Need more real mechanics like my dude