P0172 P0175 Fuel Trim Rich Testing- Toyota Sienna

Рет қаралды 23,225

3 жыл бұрын

This 2014 Sienna comes to us after the customer had it elsewhere with no luck. At an initial glance, it looks like a pretty cut and dry rich condition but in all reality, it is so much more. Join us as we walk through the diagnosis step by step leading to the ultimate root cause of failure. Enjoy!!!

Пікірлер: 99

@blockbertus 3 жыл бұрын

Just a few days ago I was like "What is Mike currently up to? Haven't seen a video from him in a while." And here you are. Welcome back.

@GoTechTraining 3 жыл бұрын

Hey bud, i've been here. Just slammed super busy! Good to be back, thanks! Mike Becker, Senior Instructor

@mikechiodetti4482 3 жыл бұрын

Welcome back Mike! I'm going to keep this for future reference. Thank you.

@GoTechTraining 3 жыл бұрын

Hey Mike, thanks! It's good to be back ;) Mike Becker, Senior Insturctor

@Ianf1x 3 жыл бұрын

Long time no see. Life can't be to bad as a dad no grey hair yet I welcome your return look forward to more fantastic vids.

@GoTechTraining 3 жыл бұрын

Hahahah Hey Ian, you can't see them, but they are there. Rasing 2 boys is a challenge some days. Had to buy the oldest his own toolbox so he would leave mine alone...still find my drawers left open all the time lol! 😑 Mike Becker, Senior Instructor

@jesselyons2002 3 жыл бұрын

Still watching your videos. Even when im living in my car.

@labradormcgraw 3 жыл бұрын

Great to see you back, Mike. I'm already looking forward to more vids in the coming weeks. Best wishes from London.

@gonzgarr1592 3 жыл бұрын

great to see you back with great info thanks

@johnaclark1 3 жыл бұрын

Glad to see you back, Mike! Was hoping Covid closures hadn't done this channel in. It's a great resource and I appreciate your dedication to it! Great case study! Sourcing quality parts isn't easy anymore.

@rrmech11 3 жыл бұрын

Hey Mike Nice seeing you back. 👍👍

@jgeorges3061 3 жыл бұрын

Mike, AWESOME always enjoy ur videos keep at them and welcome back brother.

@weldingjunkie 3 жыл бұрын

Congrats on 100k dude. Nice to see you making some new videos Mike. Thanks for sharing ... Jay

@bbmd2200 3 жыл бұрын

Welcome back. Great video as usual.

@Autorepairtechs 3 жыл бұрын

Great video mike welcome back as a Toyota Dealership technician ive seen this issue before. Great Diagnosis

@sambitar8448 2 жыл бұрын

Hi Mike Very enjoyable. Repaired based on meticulous and very logical data with an exceptional outcome. Thanks

@jimwhite5964 3 жыл бұрын

Glad to have you back, Mike....really enjoy your channel!

@GoTechTraining 3 жыл бұрын

Hey Jim, thanks! Glad to be back :) Mike Becker, Senior Instructor

@ganeshnarayan5505 3 жыл бұрын

Welcome back Mike. like your videos.

@djosbun 3 жыл бұрын

It's great to see you back, Mike!

@GoTechTraining 3 жыл бұрын

Thanks Dave, great to be back! :) Mike Becker, Senior Instructor

@TheCrazy243 3 жыл бұрын

Wow. Nice diag. Definitely tricky. I miss your videos! Learned a lot from you.

@GoTechTraining 3 жыл бұрын

Hey, thanks for watching! It's good to be back. Hopefully i'll be throwing stuff up here more cosistently again :) Mike becker, Senior Insturctor

@J.T672 3 жыл бұрын

Hi Mike, not seen that scenario before with rich and lean conditions Thanks for sharing 👍

@GoTechTraining 3 жыл бұрын

Hey Jim, kind of a crazy one, huh? Thanks for watching! Mike Becker, Senior Instructor

@stewartboucaud9919 3 жыл бұрын

Welcome back. Great job.

@GoTechTraining 3 жыл бұрын

Hey Stewart, thanks! and thanks for watching! Mike Becker, Senior Instructor

@frankgonzalez24 3 жыл бұрын

That small design change on the old MAF almost makes it sound like it's an April fool's joke.

@GoTechTraining 3 жыл бұрын

Right!? 100% legit the sensor I pulled from the vehicle and the part number printed on it lines up in their catalog as fitting that van. Mike Becker, Senior Instructor

@rickrogers2649 3 жыл бұрын

Welcome back Mike. We missed you. Great video as always. I know I'll never be as smart as you but at least I have an old fridge with a bunch of Rock Auto ( not a sponsor) stickers on it just like you.😁

@GoTechTraining 3 жыл бұрын

Hey Rick, thanks for watching! It's like a shop must to have the "beverage" fridge covered in magnets ;) Mike Becker, Senior Instructor

@bernardaflores1720 3 жыл бұрын

Welcome back, I have as many or more Rock Auto stickers as you do on the fridge. The original sensor had a reading of 7.04 gm/sec which is high for Toyota product, they are closer to 5 which is the correct reading on the new part.

@GoTechTraining 3 жыл бұрын

Hey, thanks! it's great to be back making videos! It's been tooooo long. Yeh, 7 g/s is too high at idle. Solid catch! Mike Becker, Senior Instructor

@lukecartwright1803 3 жыл бұрын

I learned a fantastic lesson from this video!!!

@GoTechTraining 3 жыл бұрын

Awesome Luke, thanks for watching! Mike Becker, Senior Instructor

@dimisrambodimisrambo7285 3 жыл бұрын

MY DEAR FRIEND, WE WISH CHRIST IS RISEN AND EVERY FAMILY HAPPINESS. I AM AN ENGINEER FROM GREECE AND I WATCH YOUR VIDEOS.YOU HAVE REALLY HELPED ME VERY MUCH IN THE DIAGNOSIS OF TROUBLES. CONTINUE TO GIVE US YOUR KNOWLEDGEI WILL WATCH YOUR VIDEOS WITH CARE. SORRY BUT I DO NOT SPEAK ENGLISH SO I TRANSLATE MY TEXTS .CONTINUE THE GOOD WORK YOU ARE DOING. THANK YOU VERY MUCH. DIMITRIS GREECE.

@paulsmith9341 3 жыл бұрын

Mike! Missed you, man!

@cmack5713 3 жыл бұрын

Great video thinking correctly along the same proccss!!

@GoTechTraining 3 жыл бұрын

Hey C Mack, thanks for watching! Mike Becker, Senior Instructor

@MrChris37280 3 жыл бұрын

Had some wacky trims and MAF reading on a Yaris once. Small head gasket leak burnt the block and bridged two cylinders. Ran great other than the light. That was a tricky one.

@hughkoontziv1362 3 жыл бұрын

That's why I try and always use OEM parts on my yota.

@DANNYN224 3 жыл бұрын

Nice job got the answer right MAF sensor

@rrmech11 2 жыл бұрын

Excellent Excellent Job. 👍👍

@James-fs4rn 2 жыл бұрын

👍 nice work is always

@GoTechTraining 2 жыл бұрын

Thanks 👍 Mike Becker, Senior Instructor

@mikecont9742 3 жыл бұрын

Great informative video..

@GoTechTraining 3 жыл бұрын

Hey Mike, thanks for watching! Mike Becker, Senior Instructor

@PhillyDee215 3 жыл бұрын

Perfect diag👌right where he left off😉

@PhillipBailey 3 жыл бұрын

Great explanation thanks

@GoTechTraining 3 жыл бұрын

Hey Phillip, thanks for watching! Mike Becker, Senior Insturctor

@howardbeacon4602 3 жыл бұрын

Great video

@GoTechTraining 3 жыл бұрын

Hey Howard, thanks!! Mike Becker, Senior Instructor

@scuba422123 3 жыл бұрын

welcome back mike! what brand was that sensor ? was it the correct one for that sienna? interesting.... i know many aftermarket sensors will under or over report

@anthonynicholls8010 2 жыл бұрын

Thanks for the info

@GoTechTraining 2 жыл бұрын

Thanks for watching Anthony! Mike Becker, Senior Instructor

@blueskiesmobileauto4253 2 жыл бұрын

Great diagnosis and information! I wonder if engine load would get to 100% at wot with an oem Toyota maf?

@adanarceo4636 2 жыл бұрын

Thanks for sharing sir. New sub 👍

@themechanicnextdoor5144 3 жыл бұрын

Our lord and saviour has returned

@paulthompson7280 3 жыл бұрын

As soon as you mentioned rich mixture at idle and lean at full throttle , I would look at the mass air flow sensor, then you mentioned mass air flow sensor as soon as I thought of it, HA.HA.AH 😂🤣😂

@GoTechTraining 3 жыл бұрын

Great minds think alike? Haha thanks for watching! Mike Becker, Senior Instructor

@benjaminruiz6931 2 жыл бұрын

GREAT CASE STUDY- QUESTION ON THE SCAN TOOL IT SHOWS CALCULATATED LOAD VS VEHICLE LOAD, WHAT SHOULD BE THE DIFFERENCE ?

@khasem87 3 жыл бұрын

keep the videos comming

@abdullahalshaqsi4680 3 жыл бұрын

Nice dear If we unplug the mas for testing it will help?

@VeggieBeard 3 жыл бұрын

Do you have any videos on how to diagnose a vehicle that starts and runs but, has now power when the throttle is pressed. I found a video that an issue very similar was do to a bad MAF Sensor. Car starts and runs but, will die or stumble when pressing the throttle.

@aymenmohamed1134 Жыл бұрын

👍👍👍

@martinarrieta248 3 жыл бұрын

Grasias

@GoTechTraining 3 жыл бұрын

Hey Martin, thanks for watching! Mike Becker, Senior Insturctor

@fortnitedaily1042 3 жыл бұрын

Hi, i have conflict fuel trims also, and my maf max read is 140g-150g/s, it should be around 160g/s for 2.0 tfsi engine. Do you think my maf is bad?

@k4fari 3 жыл бұрын

I have Civic 8th Generation 1.8L, my car's STFT always stays at - 10 , MAF reading 3.5 g/s, Revs 740 to 760, Engine load 32%, RTHR 1.96%, Inatke 4. 1 psi and coolant temp at 100 Celsius Vaccum 18.9 in/Hg (the mentioned readings are at idle). Every thing is stock/oem. No mods whatsoever. NO intake leaks, changed fuel injectors, cleaned throttle body with carb cleaner, done valve adjustment 0.008mm and 0.010mm, changed upstream and downstream o2 sensors (with used one) , changed MAF (with used one), PCV valve is working fine. What could be the cause for that high negative fuel trims? One thing i have noticed, if i remove the oil dip stick while engine running at idle, all of a sudden engine load comes to 22%, STFT to - 3.1% and MAF 2.1%. I dont have a professional scanner. I am using ELM327 and Torque Pro app to monitor my car behaviour. Your kind response will be highly appreciated. Regards

@thanujperera9826 Жыл бұрын

Hey any videos on how to diagnose a/f sensor on Toyota. If there is plz can you point me on that direction?

@howardwheaton2409 3 жыл бұрын

Yes how can I sign up for live webinars

@logicalguy488 2 жыл бұрын

I would like to know what someone else did especially after they had it somewhere else and they could not fix it. I have countless times found that some aftermarket parts someone else threw at it made it worse. I wish people would price OE parts first before just going down to the Chineseium outlet.

@meetgandhi3102 3 жыл бұрын

My AC fan starts only at max level ( 4th), my car is Mazda 3 2012 GX, AC compressor clutch doesn't engage. Tried changing the relay switch there is no Freon in the car. How can I fix it? Thank you.

@johnc4352 3 жыл бұрын

Sounds like a win for the parts cannon.

@fortnitedaily1042 3 жыл бұрын

My car has -15% Ltft, and 25% stft at idle what can cause this condition?

@mazdaman7739 3 жыл бұрын

Ivan would have done a russian repair and used a dremel to remove the excess plastic 😜

@GoTechTraining 3 жыл бұрын

Hey MazdaMan77, thanks for watching! Yeh he may have got it working that way. Hard to know for sure.😝 Mike Becker, Senior Instructor

@joelopez40oz23 3 жыл бұрын

Are all of those Rock Auto magnets on the fridge?

@GoTechTraining 3 жыл бұрын

Maybe???? Mike Becker, Senior Instructor

@erikkirby1 3 жыл бұрын

BMW valvetronic and Nissan vvel engines actualy controle the amount of air entering the cylinder... If i understand the concept...

@GoTechTraining 3 жыл бұрын

Hey Erikkirby1, thanks for watching! Right, there are multiple engines that can do it with varying valve lift or Infiniti's variable compression, or so on and so on. It's quite the rabbit hole to dive into. But it is possible, just not really on this specific engine. :) Mike Becker, Senior Instructor

@luisamaya8173 Жыл бұрын

I have a 2015 suburban ltz and I have code P0172 and P0175 what’s a normal numbers for trim fuel numbers

@GoTechTraining Жыл бұрын

Hi Luis, If you running rich on both banks on that vehicle. I would check for an incorrect learned fuel alcohol %. The normal range for fuel trims is +/- 10%. Hope this helps! Ryan Wilsing

@luisamaya8173 Жыл бұрын

Thanks for answering I’m going crazy on this truck I’m going to check that alcohol number I change MAF meter is doing same thing I change oil filter air filter spark plugs and 1 on my passenger side spark plug they stripped traded I fixed

@alexanderkalashnikov2067 3 жыл бұрын

Interesting. My Sportage 2008 learned +7% for ltft. Have no idea if that is ok.

@GoTechTraining 3 жыл бұрын

Hey Alexander, thansk for watching! +7% is a little on the high end, not enough to set a code, but something is going on throwing it out of whack. My guess, if left unchecked, it will code in the near future. Mike Becker, Senior Instructor

@alexanderkalashnikov2067 3 жыл бұрын

@@GoTechTraining Thank you! I will try no narrow it down to something. Will check exhaust hermeticity up to second oxysensor.

@GoTechTraining 3 жыл бұрын

Make sure to take a look at the maintence stuff too. Air filter, spark plugs, etc. They can slightly skew fuel trims. Mike Becker, Senior Instructor

@alexanderkalashnikov2067 3 жыл бұрын

@@GoTechTraining found some time for checks yesterday. Filter changed two months ago, spark plugs were changed 10k km ago. I have screwed them out and found white "frosty" deposits there. Cleaned. Also 2 and 3 spark plug wells were oil wet. And spark plugs isolators from that cylinders were brown near the nuts. Also, i have equalised spark gaps everywhere. Car started to react on throttle more aggressively, but ltft is the same.

@alexanderkalashnikov2067 3 жыл бұрын

Throttle position constant adaptation is 7 % on closed throttle valve. There was intermittent p0016 recorded. Seems like it caused that white deposits, because ignition was too early.

@bbkmm1 3 жыл бұрын

So Scotty is right. Nothing wrong with the car, user error as usual. 😂

@shauno3697 2 жыл бұрын

It's not door dings in your future. It's chips, graham crackers, M&M's, and Skittles in every nook & cranny around the car seats. Spilled chocolate milk and crayon in places you'd never believe the kids could draw on. Six years from now, you'll find that Nintendo DS game the kids lost five years earlier in a place that defies any rational thought. I'll leave the rest for you to discover on your own.