Mr Danner You have kept your promise to provide content even after you started the premium channel. You are a good person and I respect you immensely .

@ScannerDanner

8 жыл бұрын

+Tom A thanks Tom!

@joseph2323

7 жыл бұрын

2nd that

@confidential8738

3 жыл бұрын

@@ScannerDanner 5yrs later after this comment and dude is still gaining all kinds of respect bc he dam sure got mine. Learned priceless info from u and its greatly appreciated.

This not only helped me fix my IS300 but I also learned allot about fuel trim levels thank you !!!!❤

I love how fuel trim data can point to fuel problems or air leak problems to do smoke pressure tests too. Such a cool and easy bit of knowledge every man / woman should know. They should add this knowledge to a driving theory test to help bring vehicle emissions down a little for the DIY people that would do it if they knew.

This is best video about what dirty MAF sensor can do to a car and how to clean it PROPERLY.

What up SD? Anyone that finds SD's Videos boring is not putting their heart and soul to his work .All of his videos are fun and interesting... Thanks again SD...

Great job SD! That is exactly how almost every tech at every Toyota/Lexus dealership I have ever worked at cleans the MAF. It works! Sometimes just spraying it with that MAF cleaner will not get the wire completely clean and the car will come back.

ScannerDanner, I can't thank you enough for this walkthrough!! I have an '01 GS300 for a few months now, and the performance/MPG has been dropping significantly. I logged into my OB2 Scanner today to look at some live stats, and saw a pending P0174 code (lean Bank 2). I followed your steps with some q-tips and MAF cleaner, and sure enough a dirty MAF was the problem! The ST & LT numbers I was getting after the cleaning were pretty much the same you saw after your cleaning.

Great fix. Money in the bank. You are so right about it not always getting paid for what you, it's also what you know. Someone could go chasing a fuel pressure problem for hours and ring up a big charge for the customer. If I had to guess on the battery drain, it'd be whatever's connected to that big stereo cable!

No need to apologize for the intro or anything else, you the man. Thanks for your many video's you've been a lot of help to many. Thank you

Thanks for the vid. I'm beginning to understand long/short trims. Watching field work is definitely more entertaining. Keep it up man.

Thanks man you fixed my car The symptoms were hesitation/lack of performance with moderate acceleration up a hill The mechanic put in a new fuel pump, some leads, a exhaust gasket, I renewed the distributor cap, rotor and injectors ( i am new to fuel injection, always had carbed cars) After seeing this video i cleaned the MAF with a cap of methylated spirits and a small brush ( a one cent job ) 1995 isuzu pickup Now it gos like a jet Thanks for you video and time

@ScannerDannerPremium

9 жыл бұрын

Awesome! Thanks for sharing

@tamyboy1

5 жыл бұрын

My car is really struggling up a hill. I hope its just a dirty mass air sensor

@TheMuzikall

4 жыл бұрын

All these parts when it was just a dirty MAF or you were doing a major service anyway?..bcos those parts are costly even if they are not OEM parts!

Love watching you do your thing.. I am a mechanic, been a tech for a few short years.. But watching your video is a treat.. Is went to Lincoln tech, but did not get the inn dept lecture, the way you teach your students, it just shows me what I could've gotten.. Thank you for what you do ScannerDanner.. I've watched many vids that you have on your channel... Love it.. Your student should feel lucky..!

@ScannerDannerPremium

8 жыл бұрын

+Hiram Alicea thanks so much Hiram!

@veei4762

6 жыл бұрын

Can you do my maf sensor lol and clean my filter. Since your're in RI.

Thanks, Dan I first cleaned the MAF sensor the so-called proper way then hours of testing and repairing and replacing plugs, coils, fuel filter, injectors etc my 2002 Jag XK8 with 170k miles on her and it still ran like crap. Then I found this video, WOW it worked! The old Jag is running great now. And to think it only cost me $5 for the brake clean to fix it. Thanks again. Cheers to you and all your $$$$ saving videos.

SUBSTANTIAL Sir ScannerDanner Tutorial great thank you very much. Sir ScannerDanner From Nick Ayivor from London England UK

After watching this video, I cleaned one blackened MAF thermistor, or whatever they call them. It fixed like 4 problems. Before that, the idle was a shred too high at times, it would spark knock just as it fired up, it would spark knock when accelerating, and excessive exhaust odor was noticable when idling in park. The spark knock problems developed more recently. Carb cleaner and a Q-tip fixed all of those things right up..

@jacktran960

6 жыл бұрын

John Doe you're not supposed to touch any part of the sensor aside from the plastic. Touching the metal wiring with a q tip could damage it

@adamharris2674

5 жыл бұрын

Jack Tran did you not just watch this video?

This was a nice typical case solved by fuel trims. I will try next time during my diagnostics.

I watched one of your brothes video on maf sensors with same code and the next day i got an explorer with same problem. James danner video pointed at a low baro hz. My baro was at 130 hz and after cleaning the maf and driving for a day it recalculated the baro hz to 151.something to add to list of pids to check. Your brothers videos are great too.

Your videos on scanner readings are great. Thanks for sharing.

Your video was really helpful. I'm not a mechanic but after watching this I'm going to be cleaning the Mass Air Flow sensor which it's dirty according to the Diagnostic I just recently got and of course I'll be first removing the negative terminal of battery. Thank you SD.

@ScannerDanner

7 жыл бұрын

Thank you!

@genesis7552003

7 жыл бұрын

ScannerDanner you didn't use MAF CLEANER, why?

I think its well worth it and the coolest thing to be a part of, thanks Paul.

You should definitely say "whaddup". I'm starting to realize that the more personality in a KZreadr, the more I like them. There is this guy called the SamuraiCarpenter and he's got a lot of swagger to how he talks, lol.

Thank you so much for what you do your credit to your profession I'm so glad I took the time to spend with you it's been invaluable.

Thanks for the info Dan! Helped me makes sense of all my scanner data!

Dear sir ur honestly awesome i learning day by day ! Ur genies ! Best ever

5:30 Negative ltft at idle and positive at higher rpm - classic dirty maf symptom. Thanks will try!

Awesome video - I'm about to use Seafoam Spray for the top engine and wanted to see what else I should be inspecting. I'll take a look at my MAF as well! Thanks!

F'kin awesome. Been watching your videos since buying an obd2 and haven't been disappointed once. Keep up the good work

@ScannerDanner

4 жыл бұрын

Thank you!

Pocket screwdriver and brake cleaner, this is exactly how I'm cleaning MAF sensors. The only thing I would add, while doing this procedure, do not soak the o-ring with brake cleaner it will expand. Good video Paul, understanding fuel trims makes life so much easier.

Great informative video Paul, thanks for sharing

Great video,thanks for passing up your knowledge,.im learning a lot with your videos,

I love your field work! I almost thought you had forgot about us non premium subscribers :)

Thank you for taking the time 🙏

Great job & commentary, ScannerDanner!

thank you for this excellent explanation

hi i live in the bahamas and ihave learn alot from your site and i just want to say thanks

Hi SD. I watched a lot of your videos which helped me to fix my Lincoln Town Car repair issues. I used CRC. MAF sensor cleaner and never used brake cleaner which is oily and neither any sharp object to clean it, because the sensor is too sensitive and would break very easily . Why somebody take a risk against $8.00 only.! Thanks.

Good video and well informed. MAFS are different. Some have huge wires to the resistivity sensors and some have angel hair. If your stuck on the road with a spitting and sputtering engine and need help fast, this video can be a life saver. Take it from there and use some common sense. Of course using the proper air filter and changing it regularly can avoid most of theses problems.

What up Danner! Thanks for all the amazing info and instruction. You are the reason I got into diagnostics.

@ScannerDanner

9 жыл бұрын

What up Seth! Haha

@MrMacmua

4 жыл бұрын

Seth Harrison 😂

I just had an experienced with a failing MAF that was interesting. (3 wire analog Hitachi MAF in a '99 Nissan.) I had fuel trims that were high at idle (well over 20%), improving as the throttle opened. First hypothesis is a vacuum leak - but testing shows no leak. Also no evidence for fuel delivery problems. Fuel pressure, injectors, O2 sensors, etc all check out fine. I cleaned the MAF - with CRC spray stuff - no screwdriver! - no change. Also, using a DVOM, MAF voltage measured within factory specs at idle, 2500 rpm, 4000 rpm. The MAF also passed the test from your book: over 4 volts at WOT under load. No problem with harness, connectors, grounds, etc. The only clue was what I found with the scan tool: Even though idle was stable, the reported MAF grams/second reading at idle was varying by a lot: from 2.8 g/s to above 4.0 g/s. Why such a large swing when idle RPM isn't changing? Also, there was an inverse correlation between MAF output and fuel trim: Idle fuel trim was highest when MAF reported g/s was lowest. Replacing the MAF fixed the problem. The MAF was underreporting air flow at idle, but did better at throttle positions above idle.

@ScannerDanner

8 жыл бұрын

David UM1996 crazy. awesome detective work my friend.

Just confirmed whats was going on with the BMW 530I in the shop,the car came in with an air leak, intake was torn, disa valve was leaking, i also replaced the pcv control valve. Fuel trim now is minus at idle which indicates to me there's no vacuum leak anymore, as soon as i start driving , fuel trim bcomes excessively positive.By the way I contacted you two days agoon your site about the ebook code , reply was fast, thx Danner.

Yay, thank man! After cleaned it, engine idle and run so smooth. 👍

Thanks Danner for yet another great video, nobody cares how you sign on just care about awesome information. Keep up the good work.

i like the way you express youe knowledge...especially when yoy solve the problem..great to watch. i wished i was a car mechanic.

@ScannerDanner

8 жыл бұрын

+farouk abdi you can be one if you keep following me. Seriously, I can make you a diagnostic tech

@observeyourself1st

8 жыл бұрын

+ScannerDanner brother enough respect to you...i though you were just a good mechanic but know you have shown me that you are a good man.....a lot of people hide what they can do best but you what you know you teach to others...i promise you i will follow you not only you are a great mechanic but because because you are layal to your job by teaching others...great stuff.

@ScannerDanner

8 жыл бұрын

+farouk abdi awesome, may God bless your path my friend

@observeyourself1st

8 жыл бұрын

+ScannerDanner you gave me the best prayer...may God bless you 2.... may i ask you something... i have a zafira Vauxhall, i did take out the air mass flow sensor cleaned it, to be honest the resistors looked very clean already I put it back on still the same.. symptoms: when started cold, it sounds like back firing unstable noises as if it wants to stop. after 3 minutes it becomes normal runing smooth. when the car is worm it seems ok...but the problem is gettting worse as days goes. another clue when i start the car while unstable the accelerator does not respond bo matter how much i give it gas????! after 3 minutes it becomes ok... honestly i dont want to disturb you and take your valuable time. i welcome any directions from you.

It also helped the idle, it was idling before the cleaning at around 550. After the cleaning it went up within spec at 700

Your the man brother. You help a lot

@ScannerDanner

8 жыл бұрын

+mark ortiz thanks bro

Manners manners and man you’re the man you’re right

awsome post SCD....thnx...ill need to purchase ur material fo sure

good content and good material I like the quality of the videos I want to start recording videos , may I ask you what is your set up what type of camera do you have ?? thanks paul

Thanks alot bro my problem is hopefully solved 👍

good jog broth i verly finish the videon on primium channel for maf sensor n i understand the video well im just a student n one day i will be a tech like u 👊 eve tho i dont speak english well but i still learning from u great tech im from long beach CA

I have a p0171/p0174 and replaced all the vacuum leak possibilities changed the fuel pump and fuel filter regulator. The short term fuel trim at idle is 27.3% and at 3000rpm 27.3%. The only time the fuel trim drops is when I'm driving and I let my foot off the gas. It drops then slowly climbs, once on the gas it quickly jumps to 27.3%. Do you think I need 02 sensors, a new MAF, or do you think I have clogged injectors.

Ive always cleaned my MAF with carb cleaner and it always works fine.

Another Great One!

Great vid! Thanks.

youre awesome dude! keep up the good attidude

I think a, What's good with it man. Scanner Dinner here... is a nice manly intro. not for everyone mind but a suggestion none the less.. Nice video uploaded. Thankyou bruh.

I have ready that some MAF's have a coating that carburetor cleaner can damage. Brake Cleaner is certainly less powerful. Thoughts? Love your videos and your book. I regularly refer to it!

I use mass air flow cleaner to do my 2000 toyota echo maf. I am going to take a much closer look to see if I am getting the crud off the resistors.

Thank you for the content. Did you ever find out what was causing the battery drain? I have a 2001 ES300 with that issue, still trying to figure out what's causing it. I think it may be the auto headlights.

In the UK for my 2002 Yaris the MAF costs £ 138.99 WFF!! Just for that little thing.Good video by the way.

Good morning scanner Danner I am a technician in New York and I was wondering how do you go about invoicing customers for a dirty MAF sensor, what do you include on the Bill? do you include scan data or screenshot of the scan data?. I ask because sometimes I find myself in a situation where the customers find it outrageous that I am charging them just for cleaning apart most of the time I feel like they would have preferred if I would have replaced expensive part then just clean it

Good job Mr danner

Awesome fix. 🤙👌

Well I need this guy to do all my repair videos. I like this guy lol

good info . checking on why i cant get my dash guages to come back on.

Thanks for the info was great awesome

hey danner what would be good numbers on a 2000 blazer 4.3

How do you know if your wiring harness or the sensor connector is bad? Bought a new MAF sensor and car worked well for 3 weeks then went on the fritz again - hesitation from stop, bad acceleration, etc. Any other thoughts? I don't think it's possible to have killed 2 MAF sensors...

Hi scannerdanner I have a mustang 2007 v6 4.0L in the morning when it's hella cold the car gives me a lot problems to started.i change the fuel pump and the temperature sensor and new battery and I change sparkplugs and oil and it still gives me the same problem in the morning the mustang but it doesn't have checkengine light.what could the car have??

I to shaky to try cleaning one like that . Good job.

good one, thank you...

I’ve cleaned so many MAFs on Toyota products and fixed them right up. I’d always start there. Takes nothing to clean them up. For some reason.. (I’m guessing crappy paper filtration) they tend to dirty up real easy. It really is the first thing I check on Toyota’s for rough running and rich/lean conditions.

videos is very good love it.

have u tried an anti-glare film on the verus glass?

show, I have done it many times on Ford MAF sensors and saved it

by any chance you know if 2000 es300 has a MAP sensor? or just MAF

Great video Paul just what I needed with my fuel trims neg at idle and high when raising RPM, only difference is my STFT goes to +25 and LTFT goes to zero and splutters when raising. Any ideas. I have cleaned it before but I will take another look. Thanks a lot my friend.

@ScannerDanner

8 жыл бұрын

+Ilovetosingem what kind of car?

Thx Scanner Dan for allowing me in to your class. I learned a lot, but my 07 Jetta has me baffled. It ran great when I bout it, super fast. Had battery issues, and it got ark like twice. Check engine light came on. Code said maf sensor. Put a new one on. Trunk light came on, wouldn't pop open, hand to go thru the trunk. A/C stop working. Then the ESP light came on. Then it went into Limp mode. Now it will crank no start.... Then I disconnect the Maf, and it ran...but still in limp mode. I'm just throwing parts at now??? Do I have to take it to the shop. 😢

What do u charge for a job like that in the field? Great simple video really helps to understand. Thanks. Will be taking your whole pay course soon!

Excellent

Congrulations from turkey;big master

@engineworld4059

2 жыл бұрын

I like your style big master

Hi Mr scanner it brake cleaner safe for all maf sensors? I was told not , that use only a special cleaner ,any way let me know I watch your videos

That's experience great guy

Thank you

YOU ARE THE MAN

I have a lean code p0171 check engine light is always on, the cr run fine and idles fine. air/fuel sensor fluctuates between 600 to 800 down to 200. the fuel trim long term is 15 + and the shorterm fuel is -14. Check for vacuum leak engine cold sprayed water all over intake manifold , vacuum hoses , exhaust manifold, its normal. The air/fuel sensor drop to zero volts when I pulled the vacuum hose from manifold . Does a zero volt reading point to a faulty o2 sensor , its a 4 wire , on Toyota corolla 2000 4 cyl CE 1.8l. Now today I will check spark plugs and injectors, its repeated ticking sound points to both injectors and spark. spark advance on the obd tool reads 15 with a G letter . What does it mean? I have not back probe the o2 sensor because I can not find its o2 specifications on voltage drop and I don't know if its a wide band or a narrow band sensor. I cant find the fuel regulator in the engine. And I need to inspect all the vacuum hoses too. Its like being a medical doctor, I only have 150 hours of training with certificate from the 70s and learning all this analysis with fancy digital scanners can be very expensive for just a do-it yourself-er. can I use a volt meter with an amp probe together on a o2 sensor signal wire, instead of back probing? Can I use the wave screen on the less expensive OBD scanner, to see wave forms along with amp probe and wire clip , How do I set this up?

thank you.

i have a 2002 lex gs i changed my exhaust manfold i still have a problem when i drive off not getting power from take off is it my MAF sensor. when pressing on gas i get this loud reving sound when taking off pressing on gas.

I like what you do.

Would CRC electric cleaner (contact cleaner) work as well?

What is a good number to use when looking at fuel trim........just gat into the field my instructor told me plus or minus 10 because 20 is to high of a number and he showed the class how some people in the industry use plus oar minus 20

I love all your video 👌

@ScannerDanner

7 жыл бұрын

Thank you!

Thanks for the info :)

Thanks

Pocket screw driver the multi tool great video

@ScannerDanner

9 жыл бұрын

Christopher Barone I know, I even eat my lunch with it sometimes :)

Great explanation for finding the MAF fault and how to clean it, thanks. Have issues with my Zafira. Used a bluetooth plugin adapter to connect to my android phone/tablet and it keeps coming up, a couple of times a week, with MAF fault and fuel trim. Hopefully save myself a bit of money cleaning it. Let you know the results.

@ScannerDanner

8 жыл бұрын

+LordBazilBarrington don't forget a vacuum leak can set MAF and lean exhaust codes

@LordBazilBarrington

8 жыл бұрын

+ScannerDanner Thanks I did watch another of your videos showing the smoke machine to find the leaks too. Shame I don't have the equipment to do that. Could try a disco smoke machine I suppose. LOL!

@4144758

Жыл бұрын

I use a vape to check for the vacuum leaks ha

I replaced mine recently on an impala I had rough idle,when I put my foot on the gas rpms would go to 0 and it would try and stall, and one time I was driving it to get the part pushed in the gas and no response replaced the 166 dollar piece of junk and now it runs fine

Any advice on gs300 2001 year,random dead gas pedal till have way to floor,other times responds and acceleration is normal.but it’s intermittent and no code.

@ScannerDanner

2 жыл бұрын

Check your TPS voltage first and make sure it is a smooth voltage sweep from idle to wide open. (Cable throttle right?) This can be done key on, engine off

so does this mean that the air filter in use is not doing its job properly being as the sensor is dirty?

Hello 1997 4.3 S10 once in CL, STFT and LTFT start climbing very positive non stop and goes back to zero with throttle blip. But if rpm is held steady at 2000 it also then start to climb fuel trims non stop both banks. Car has good acceleration at WOT but oxigen sensor goes very lean. I'm leaning towards stuck open EGR, Mass airflow problem ( dispite looking clean ) or faulty o2 sensors that are below 450mv. Should I first get new o2 sensors? im stuck. Its hard to find OEM sensors here in Brazil lol Cheers!

@ScannerDanner

2 жыл бұрын

Fuel pressure must be tested next.