Excellent video. Been having a lean condition part throttle bank 1 issue P2177. Smoke tested it, isolated the evap and pcv systems, fuel trims not coming down after that, and have 21 in-hg at idle before and after disconnecting the evap and pcv and blocking the ports at the intake. Down to either a small intake gasket leak below the plenum, exhaust leak, or fuel injectors (hope not - DI on an M276 engine).
MEMO TO SELF: First, I am a retired federal safety officer. I see an issue in this video that is very common among most people who own fire extinguishers. The fire extinguisher is placed in the engine bay area. What is the problem? If a fire breaks out IN THE ENGINE BAY, you will have to reach INTO the fire to access the fire extinguisher. BIG problem. Set your fire extinguisher 5’-10’ away from fire potentials. You will still have immediate access to the extinguisher…and keep the hair on your arm. 👍
Great job guys it was so great that you explained it so good nice and slow great job that's the best view I've ever seen I'm a mechanic but I work on semis not too much on the smaller stuff so great job 👍 thank you! Bill,
Great video guys. Been tracking a P1126 lean bank 2 on my Porsche Boxster. Haven’t found anything off yet. So hard to find. Final check will be exhaust. Also the Brake Booster check valve can cause a leak condition as well and easy enough to check. Thanks for the great videos!
As your tank gets hot pressure inside is supposed to escape charcoal canister then to purge valve then to intake. Take note if this pressure builds after 30 minutes driving your car might start bogging. Reversed pressure sends fuel from injectors back to tank. Lean...lol
I looked into mine and it's saying Lane fuel not enough fuel getting to the system itsfunneh are and all the other stuff so the injectors not put in enough fuel in it right
soapy bubble trick only works on pressure leaks, not vacuum leaks. Most often with EFI, the ISCM or electronic throttle will compensate for idle speed and you won't hear a jump in idle speed when hitting a leaky spot with propane or flammable spray, or water... but if you watch the short term fuel trim with your handy bluedriver (tm) unit, you can definitely see the trims spike. Here's a feature suggestion, how about incorporating a "beep" tone to the app when fuel trims spike to the negative, to help in this situation...
Great video but really wish you guys would make a video about LTFT and STFT using live data. There's a few videos (on UA-cam) out there that don't even require popping the hood to diagnose a problem.
I’ve had this code (P0171) in my 2006 Camry since I bought it. 280k miles. This is the only code that ever gets tripped and then BlueDriver says this is the only code confirmed. My live data shows the LTFT on Bank 1 being high at idle and then smoothing out some while driving. STFT on Bank 1 being very close to and sometimes at 0% while idling then higher while driving. Something else I found suspicious was the live data showing the Absolute Throttle Postion being high. It reads at 16% or so at idle then jumps all the way up to 27% while driving and fluctuates between those two numbers while driving. I’ve replaced the MAF sensor, engine air filter, fuel filter and fuel pump. What could it be? This car has had some exhaust system work done to it previously I was told but it does not have any other codes nor does it make excess noise. What does the absolute throttle position sensor being high indicate and what ultimately is causing my lean condition? Please help if possible. I’d like to fix it because that’s the only thing wrong with this car’s system right now and it runs and rides great otherwise.
Excellent video. Would be good to hone in also on why if just ONE bank. This is my situation. I solved all the air intake leaks etc. But still getting random/pending P0174: Bank 2. Thanks!
How does ethanol affect ECM/PCM fuel trim calculations? Does it require the same 14.7:1 ratio calculations or some other ratio? If so does the ECM/PCM sense whether the fuel is ethanol or gasoline and use a different ratio for ethanol? If the ECM/PCM assume gasoline is used and does not adjust for the use of ethanol what is the impact on air/fuel calculations and fuel trim outputs? How does this affect scanner outputs, rich, lean, etc.? Is there a YT video that addresses these questions? Bottomline: How does the ECM/PCM adjust for these two different fuel types with different optimum air/fuel ratios, or does it not, and what are the impacts on scanner readings and diagnosis? Again, is there a YT video that addresses these questions?
When I make a simple observation, the spark plug was absent from the reasoning. The spark plug gives direction to the topic in terms of fuel injectors. The injector does not overcome the air, and the spark plug is almost clean and different from the rest.
Thanks guys, thats really a very Informative video. However i did also learn in the Techschool that the defective EVAP valve or EGR valve can cause lean Conditions and therefore false Fueltrims.
One thing they didn’t mention was the fuel pressure regulator. If it’s stuck open more gas will return to the gas tank and less pressure will be in the rail under load. The fuel pressure might be okay at idle but once put under load there might not be enough pressure to keep the engine going.
I bought aftermarket EGR from Amazon it came with 3 gaskets but I used one and today I sprayed carb spray by the egr and the engine changed. I was wondering should I have used all 3 gaskets,? My engine is stalling and rpm won't stay in sweet spot
Hi, thanks for this educative video.i have a similar problem where the engine is running lean but when I unplugged the 02 sensor,it ran fine.So I replaced the sensor and the engine ran fine for a dey.the next day ,it begins to run lean.i have not been able to find a leak.thanks for any help from you
Thank you guys for this great video 👍 . My 1986 Toyota van runs really good on any speed and it also starts right away with no problemo , But sometimes it sputters when I accelerate of a stop , Can a bad fuel pump check vale cause a car to sputter on accelerating ? 🤔
I have been using the Blue driver for over a year. I am issues with my 2016 Nissan Altima and the things that are happening should be contradicting what kind of codes that i am getting. Also is there a code that says if a cat converter is bad?
Hey DallasPilotCar! We have a option in our app to send us a support email, if you go to the more tab and tap contact us then select the email option. You can type out what the issues you are seeing are and if you scan your Altima first we will get a log of what is going on behind the scene's a little. The log will auto attach when you use the email option in app.
Excellent!! The best, most thorough diagnostic video I've ever viewed! Professionally complete and thorough - without all the BS... Awesome!
Amen
Love how detailed these guys are
Excellent video. Been having a lean condition part throttle bank 1 issue P2177. Smoke tested it, isolated the evap and pcv systems, fuel trims not coming down after that, and have 21 in-hg at idle before and after disconnecting the evap and pcv and blocking the ports at the intake. Down to either a small intake gasket leak below the plenum, exhaust leak, or fuel injectors (hope not - DI on an M276 engine).
MEMO TO SELF: First, I am a retired federal safety officer. I see an issue in this video that is very common among most people who own fire extinguishers. The fire extinguisher is placed in the engine bay area. What is the problem? If a fire breaks out IN THE ENGINE BAY, you will have to reach INTO the fire to access the fire extinguisher. BIG problem.
Set your fire extinguisher 5’-10’ away from fire potentials. You will still have immediate access to the extinguisher…and keep the hair on your arm. 👍
Smoke machine finds vac leaks fast and EXACT where. No fire extinguisher needed. 120$ for a smoker.
^^^yup, and if you don’t got 120$ then just light a cigar and blow it into a vacuum hose, the old school way
Great job guys it was so great that you explained it so good nice and slow great job that's the best view I've ever seen I'm a mechanic but I work on semis not too much on the smaller stuff so great job 👍 thank you! Bill,
Great video guys. Been tracking a P1126 lean bank 2 on my Porsche Boxster. Haven’t found anything off yet. So hard to find. Final check will be exhaust. Also the Brake Booster check valve can cause a leak condition as well and easy enough to check. Thanks for the great videos!
Glad I got this blue driver I’m pretty impressed with this and the help that comes with it thanx
It's remarkable how now days we have to tell people not to touch a hot exhaust..🤣
As your tank gets hot pressure inside is supposed to escape charcoal canister then to purge valve then to intake.
Take note if this pressure builds after 30 minutes driving your car might start bogging. Reversed pressure sends fuel from injectors back to tank. Lean...lol
Thanks for sharing
Thank you
Yeah the 2017 or newer will pop the code up saying hey there's a vacuum leak on top of your lean fuel condition
Awesome
You should show where your connecting you gauges
While driving my short-term fuel trim jumps up randomly to like 12-19 but overall it stays pretty steady +-3. Do you know what might cause that?
does it happen when the engine is under load or when you let off the gas pedal?
@@GrandmasMallCrawler what if it goes up when you lift off the gas?
The 2017 Dodge Durango doesn't have a mass air flow sensor has a temperature air flow sensor
Using E5 petrol this can occur.
I looked into mine and it's saying Lane fuel not enough fuel getting to the system itsfunneh are and all the other stuff so the injectors not put in enough fuel in it right
But you also have a code saying vacuum leak
They seem so bored 😂
Bet they cut it with a knife..
Baby momma must have cut it Lol'
I was hoping he was gonna spray the fire extinguisher around the hoses to check for leaks 😂😂😂😂
soapy bubble trick only works on pressure leaks, not vacuum leaks. Most often with EFI, the ISCM or electronic throttle will compensate for idle speed and you won't hear a jump in idle speed when hitting a leaky spot with propane or flammable spray, or water... but if you watch the short term fuel trim with your handy bluedriver (tm) unit, you can definitely see the trims spike. Here's a feature suggestion, how about incorporating a "beep" tone to the app when fuel trims spike to the negative, to help in this situation...
This was amazing! Thank you both. Best I’ve seen. Please continue on this path in life😁
Finally, something highly educational with no bs! Thanks😉
This is awesome. I found this channel through a link created by my BlueDriver scanner. This product and service far exceeded my expectations.
Great video but really wish you guys would make a video about LTFT and STFT using live data. There's a few videos (on UA-cam) out there that don't even require popping the hood to diagnose a problem.
I’ve had this code (P0171) in my 2006 Camry since I bought it. 280k miles. This is the only code that ever gets tripped and then BlueDriver says this is the only code confirmed. My live data shows the LTFT on Bank 1 being high at idle and then smoothing out some while driving. STFT on Bank 1 being very close to and sometimes at 0% while idling then higher while driving.
Something else I found suspicious was the live data showing the Absolute Throttle Postion being high. It reads at 16% or so at idle then jumps all the way up to 27% while driving and fluctuates between those two numbers while driving.
I’ve replaced the MAF sensor, engine air filter, fuel filter and fuel pump. What could it be? This car has had some exhaust system work done to it previously I was told but it does not have any other codes nor does it make excess noise. What does the absolute throttle position sensor being high indicate and what ultimately is causing my lean condition? Please help if possible. I’d like to fix it because that’s the only thing wrong with this car’s system right now and it runs and rides great otherwise.
Excellent video. Would be good to hone in also on why if just ONE bank. This is my situation. I solved all the air intake leaks etc. But still getting random/pending P0174: Bank 2. Thanks!
How does ethanol affect ECM/PCM fuel trim calculations? Does it require the same 14.7:1 ratio calculations or some other ratio? If so does the ECM/PCM sense whether the fuel is ethanol or gasoline and use a different ratio for ethanol? If the ECM/PCM assume gasoline is used and does not adjust for the use of ethanol what is the impact on air/fuel calculations and fuel trim outputs? How does this affect scanner outputs, rich, lean, etc.? Is there a YT video that addresses these questions? Bottomline: How does the ECM/PCM adjust for these two different fuel types with different optimum air/fuel ratios, or does it not, and what are the impacts on scanner readings and diagnosis? Again, is there a YT video that addresses these questions?
I was able to find the crack in my hose with the soap water! Nice!
A bad 02 sensor can cause a lean condition right? And cause the fuel trim to be +
Chris - It almost looks like someone cut it with a knife
Jordan - 🔪🗡
Probably his baby momma lol
So wait, if the long term fuel trim is within that 9 range, what problem does that rule out?
Just fixed the check engine light on my Mazda 6 by replacing the MAF! Awesome video!
Is it possible to have a lean condition on both banks if I have a leaky valve cover gasket on just one bank ?
Do a thorough video on live data. Chris fix style quality.
Best tutorial on lean & fuel trims and other issues on YTube 👍🤷🏼♂️👍
Brilliant video guys👌🏻👌🏻👍🏻
What does after the throttle body mean in the vacuume gauge section? Towards the engine or away? Does the pcv valve line count?
When I make a simple observation, the spark plug was absent from the reasoning. The spark plug gives direction to the topic in terms of fuel injectors. The injector does not overcome the air, and the spark plug is almost clean and different from the rest.
I can hear the vacuum leak on the video.
Thanks guys, thats really a very Informative video. However i did also learn in the Techschool that the defective EVAP valve or EGR valve can cause lean Conditions and therefore false Fueltrims.
One thing they didn’t mention was the fuel pressure regulator. If it’s stuck open more gas will return to the gas tank and less pressure will be in the rail under load. The fuel pressure might be okay at idle but once put under load there might not be enough pressure to keep the engine going.
Can you make a video how to check traction control all system because I have slip mark on the dashboard 😅 couldn’t figure how to check it
Need you're help guy's
Another great informative video from you guys !! Thanks again !!!
currently see a P013B Lean to Rich (Bank 1 Sensor 2) code on my 2017 Subaru Outback 3.6R
Yes..my exhaust flange is leaking causing a rich condition with my ltft in the 15-19%. I have a p1175 code.
I bought aftermarket EGR from Amazon it came with 3 gaskets but I used one and today I sprayed carb spray by the egr and the engine changed. I was wondering should I have used all 3 gaskets,? My engine is stalling and rpm won't stay in sweet spot
“Oh wow I don’t know how we missed that it almost looks like someone cut it with a knife!!” They definitely cut it before the video lol.
you can fix 20 problems in cars if you watch this video great jop guys and thinks 👍
Could a bad knock sensor cause a vacuum leak? (I have a Miata)
I purchased this tool in 2020, the best money I have ever spent on diagnostics. Always within my reach, it has saved many friends and family members.
Kinda liked the Motorcraft battery in the Chevy. Lol
🤫
Great video.!! No guessing working hands on problem solving great !
This is a great video guys
Hi, thanks for this educative video.i have a similar problem where the engine is running lean but when I unplugged the 02 sensor,it ran fine.So I replaced the sensor and the engine ran fine for a dey.the next day ,it begins to run lean.i have not been able to find a leak.thanks for any help from you
Thank you guys for this great video 👍 . My 1986 Toyota van runs really good on any speed and it also starts right away with no problemo , But sometimes it sputters when I accelerate of a stop , Can a bad fuel pump check vale cause a car to sputter on accelerating ? 🤔
Done did all that,mine isn't a leak,there isn't a shop on earth that can fix mine
is 6.8% long term fuel trim bank good?
Yes, always remember to keep trims no greater than -10 or 10.
Before wasting time update your plugs and wires..
Or just read the data and you will see if it’s a lien or not
Very good explanation of how to test the system
Thank you for the awesome video, you guys are the great instructors. I learned a lot from this video.
Keep diagnosing videos coming
Excellent 🚘
Sounds like you have a lot more then a vacuumed leak
Great job 👏
what an awesome video thank you so much
I have been using the Blue driver for over a year. I am issues with my 2016 Nissan Altima and the things that are happening should be contradicting what kind of codes that i am getting. Also is there a code that says if a cat converter is bad?
Hey DallasPilotCar! We have a option in our app to send us a support email, if you go to the more tab and tap contact us then select the email option. You can type out what the issues you are seeing are and if you scan your Altima first we will get a log of what is going on behind the scene's a little. The log will auto attach when you use the email option in app.
Very professional thank you.
The bigger guy sounds like Dolph lundgren
Bluedriver is just the best diagnostic tool.
THANK YOU WOW GREAT JOB GUYS
I unhooked the sensor while it was running and it shut off.
Apparently that means it’s working perfectly
Told it was a low circuit,not a leak
if that's a 5.4 it needs a timing chain
These guys are the best
Absolutely excellent video 👌👌
Damn yall bad ass
You guys are great
That thing has bigger problem s then a vacuum leak
We do use each vehicle for more then one video so they do usually have more then just one problem yes!
Maritimes accent
Fantastic
Great video
when checking air mass flow sensor, when unplugged what if the engine stops??
I want to know to !
Bad maf sensor
Great video! Time to push my Blue driver to the next level
Thanks so much, very helpful! What if the vehicle has a MAP sensor instead. Tx again.
Wow great video
This video was so much help!!!! Thank you!
Jordan needs to do voice over work. His voice is so smooth.
I have a code it says cylinder for running Lane