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How to identify and clean a dirty MAF sensor (Lexus) 

ScannerDanner
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A Lexus GS300 case study. (negative fuel trim numbers at idle and positive fuel trim numbers under load)
For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at www.scannerdanner.com as an eBook or paper book.
Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium www.scannerdan... There is a 14 day free trial.
On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere!
Disclaimer:
Due to factors beyond the control of ScannerDanner LLC, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. ScannerDanner LLC recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of ScannerDanner LLC, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not ScannerDanner LLC.

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20 авг 2024

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Комментарии : 615   
@YouTube.TOM.A
@YouTube.TOM.A 8 лет назад
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
@ScannerDanner 8 лет назад
+Tom A thanks Tom!
@joseph2323
@joseph2323 7 лет назад
2nd that
@confidential8738
@confidential8738 3 года назад
@@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.
@josephdewuhan
@josephdewuhan Год назад
This is best video about what dirty MAF sensor can do to a car and how to clean it PROPERLY.
@careyautorepairs
@careyautorepairs Год назад
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.
@josephgray3738
@josephgray3738 6 лет назад
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.
@josealers67
@josealers67 9 лет назад
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...
@Mcope666
@Mcope666 4 месяца назад
This not only helped me fix my IS300 but I also learned allot about fuel trim levels thank you !!!!❤
@1quickchevy2
@1quickchevy2 9 лет назад
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!
@hiramalicea723
@hiramalicea723 8 лет назад
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
@ScannerDannerPremium 8 лет назад
+Hiram Alicea thanks so much Hiram!
@veei4762
@veei4762 7 лет назад
Can you do my maf sensor lol and clean my filter. Since your're in RI.
@cars929
@cars929 9 лет назад
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
@ScannerDannerPremium 9 лет назад
Awesome! Thanks for sharing
@tamyboy1
@tamyboy1 5 лет назад
My car is really struggling up a hill. I hope its just a dirty mass air sensor
@TheMuzikall
@TheMuzikall 4 года назад
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!
@Every1Has1
@Every1Has1 9 лет назад
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
@JohnDoe-uq3mx
@JohnDoe-uq3mx 8 лет назад
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
@jacktran960 6 лет назад
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
@adamharris2674 5 лет назад
Jack Tran did you not just watch this video?
@darnell7071
@darnell7071 9 лет назад
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.
@kepelikepeli7353
@kepelikepeli7353 7 лет назад
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
@ScannerDanner 7 лет назад
Thank you!
@genesis7552003
@genesis7552003 7 лет назад
ScannerDanner you didn't use MAF CLEANER, why?
@jagonxke6078
@jagonxke6078 5 лет назад
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.
@mickeytnova
@mickeytnova 8 лет назад
Thanks for the vid. I'm beginning to understand long/short trims. Watching field work is definitely more entertaining. Keep it up man.
@mike-yp1uk
@mike-yp1uk 9 лет назад
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.
@mohadhady9862
@mohadhady9862 8 лет назад
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.
@50sKid
@50sKid 8 лет назад
You should definitely say "whaddup". I'm starting to realize that the more personality in a RU-vidr, 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.
@zbynekm2918
@zbynekm2918 4 года назад
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.
@liquidh6344
@liquidh6344 3 года назад
5:30 Negative ltft at idle and positive at higher rpm - classic dirty maf symptom. Thanks will try!
@martinmapps
@martinmapps 4 года назад
F'kin awesome. Been watching your videos since buying an obd2 and haven't been disappointed once. Keep up the good work
@ScannerDanner
@ScannerDanner 4 года назад
Thank you!
@TNoc-xh5pd
@TNoc-xh5pd 5 лет назад
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.
@DavidUM-ui6es
@DavidUM-ui6es 9 лет назад
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
@ScannerDanner 9 лет назад
David UM1996 crazy. awesome detective work my friend.
@jordankahele14
@jordankahele14 5 лет назад
I think its well worth it and the coolest thing to be a part of, thanks Paul.
@Htube78
@Htube78 8 лет назад
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.
@OscarSegundo
@OscarSegundo Год назад
It also helped the idle, it was idling before the cleaning at around 550. After the cleaning it went up within spec at 700
@tywilkins7086
@tywilkins7086 5 лет назад
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!
@GoingMod
@GoingMod 3 года назад
Thanks for the info Dan! Helped me makes sense of all my scanner data!
@observeyourself1st
@observeyourself1st 8 лет назад
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
@ScannerDanner 8 лет назад
+farouk abdi you can be one if you keep following me. Seriously, I can make you a diagnostic tech
@observeyourself1st
@observeyourself1st 8 лет назад
+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
@ScannerDanner 8 лет назад
+farouk abdi awesome, may God bless your path my friend
@observeyourself1st
@observeyourself1st 8 лет назад
+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.
@SethHarr
@SethHarr 9 лет назад
What up Danner! Thanks for all the amazing info and instruction. You are the reason I got into diagnostics.
@ScannerDanner
@ScannerDanner 9 лет назад
What up Seth! Haha
@MrMacmua
@MrMacmua 4 года назад
Seth Harrison 😂
@kennethforbes7553
@kennethforbes7553 8 лет назад
hi i live in the bahamas and ihave learn alot from your site and i just want to say thanks
@kevinlynch857
@kevinlynch857 2 года назад
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.
@nickayivor8432
@nickayivor8432 2 года назад
SUBSTANTIAL Sir ScannerDanner Tutorial great thank you very much. Sir ScannerDanner From Nick Ayivor from London England UK
@FareyAls
@FareyAls 8 лет назад
Dear sir ur honestly awesome i learning day by day ! Ur genies ! Best ever
@topherd1011
@topherd1011 3 года назад
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.
@tardeliesmagic
@tardeliesmagic 7 лет назад
In the UK for my 2002 Yaris the MAF costs £ 138.99 WFF!! Just for that little thing.Good video by the way.
@JahanZeb1976
@JahanZeb1976 9 лет назад
This was a nice typical case solved by fuel trims. I will try next time during my diagnostics.
@randalldalton5475
@randalldalton5475 9 лет назад
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!
@dreamer2355
@dreamer2355 9 лет назад
I love your field work! I almost thought you had forgot about us non premium subscribers :)
@jeffjohnson3195
@jeffjohnson3195 9 лет назад
Thanks Danner for yet another great video, nobody cares how you sign on just care about awesome information. Keep up the good work.
@Super_Lancashire
@Super_Lancashire 8 лет назад
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.
@ercost60
@ercost60 8 лет назад
Great job & commentary, ScannerDanner!
@neocatharry2693
@neocatharry2693 7 лет назад
Your videos on scanner readings are great. Thanks for sharing.
@lucasodell6652
@lucasodell6652 5 месяцев назад
Well I need this guy to do all my repair videos. I like this guy lol
@junioralvarez1103
@junioralvarez1103 9 лет назад
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
@GioGuitarDude
@GioGuitarDude 9 лет назад
Ive always cleaned my MAF with carb cleaner and it always works fine.
@davidweum
@davidweum Год назад
I just bought CRC MAF CLEANER AND THROTTLE BODY CLEANER. THERE IS NO INDICATION OF ANY FUEL ISSUES WITH. MY 2003 SATURN ION. IT STILL PURRS LIKE A KITTEN, BUT I CONSIDER CLEANING THESE PARTS AS GENERAL MAINTENANCE. I HAVE 169 THOUSAND MILES ON IT. BUT, IM STILL CONCERNED WITH MY '86 , 302, F150 AND MY BROTHER'S 99 Toyato Camray Solerno.
@anasalrashidi6627
@anasalrashidi6627 3 года назад
thank you for this excellent explanation
@scottsaetern5938
@scottsaetern5938 6 месяцев назад
Thanks for showing me how to clean that out she was dirty
@SchrodingersBox
@SchrodingersBox 9 лет назад
Regarding and idea for an intro, how about a rock music riff and countdown (1...2...3...4) and then you cut to a burnout of a motorcycle wheel?
@don94pgt
@don94pgt 9 лет назад
Schrodingers Box hahahaha
@ScannerDanner
@ScannerDanner 9 лет назад
Schrodingers Box wait, isn't that scotty kilmers intro??? I'll pass
@johnbalderas1989
@johnbalderas1989 9 лет назад
ScannerDanner
@johnbalderas1989
@johnbalderas1989 9 лет назад
ScannerDanner Do what you do. I am perfectly fine with your intro. I feel very blessed to have found your channel. Your have inspired me to become an automotive diagnostician. Thank you very much Paul for your contribution to the automotive world for aspiring technicians as myself and others.
@EddieTheGrouch
@EddieTheGrouch 9 лет назад
ScannerDanner But you could make it look cool, With Scotty it's just...annoying. Or you could use an Aussie accent, move your hands a lot, and emphasize each word like an exited 4 year old. No, wait.. that's kinda like Scotty, too. "Hey guys" is fine.
@douglaschavarria7644
@douglaschavarria7644 3 года назад
youre awesome dude! keep up the good attidude
@user-ek2mp3go2z
@user-ek2mp3go2z 7 месяцев назад
Manners manners and man you’re the man you’re right
@NebukedNezzer
@NebukedNezzer 6 лет назад
with 170k on my toyota echo I finally replaced the MAF sensor and corrected the P0171 code lean run error. no amount of cleaning would fix the original sensor. it lasted a long time. now the replacement was 19 bucks and it corrected all the problems. price coming down on MAF sensors for older car. looking at the original sensor its clean but just does not work properly anymore.
@superarms1
@superarms1 8 лет назад
Your the man brother. You help a lot
@ScannerDanner
@ScannerDanner 8 лет назад
+mark ortiz thanks bro
@LordBazilBarrington
@LordBazilBarrington 8 лет назад
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
@ScannerDanner 8 лет назад
+LordBazilBarrington don't forget a vacuum leak can set MAF and lean exhaust codes
@LordBazilBarrington
@LordBazilBarrington 8 лет назад
+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
@4144758 Год назад
I use a vape to check for the vacuum leaks ha
@crobinson3128
@crobinson3128 9 лет назад
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
@atye04
@atye04 6 лет назад
I literally stretched, meditated and listed to how to fix my Toyota echo all at the same time. X)
@tbl8560
@tbl8560 5 лет назад
Looks like someone installed and oiled K&N air filter in that GS that coated the MAF sensor. I would not recommend an oiled air filter in a MAF configured system.
@GokuInstinct1
@GokuInstinct1 11 месяцев назад
I’m glad I didn’t go with the K & N on my GS350! I read somewhere that it lets more contaminants in so I went with OEM engine air filter from Lexus dealer.
@CHAISOICY
@CHAISOICY Год назад
When u said dead battery I immediately thought okay so charge it ☠️ get a new battery or new alternator or both LMAO
@thoang0126
@thoang0126 5 лет назад
Yay, thank man! After cleaned it, engine idle and run so smooth. 👍
@mayocruise4884
@mayocruise4884 9 лет назад
Great video,thanks for passing up your knowledge,.im learning a lot with your videos,
@cooliebaii4493
@cooliebaii4493 3 года назад
Thank you for taking the time 🙏
@wtbm123
@wtbm123 9 лет назад
I to shaky to try cleaning one like that . Good job.
@AamirZ
@AamirZ 9 лет назад
TBH I've used brake cleaner to clean MAF & MAP sensors. I checked it didn't leave a residue once dry, installed, car runs fine, no problems. Good thing about brake cleaner is it really cleans the oil and carbon good.
@engineworld4059
@engineworld4059 2 года назад
Congrulations from turkey;big master
@engineworld4059
@engineworld4059 2 года назад
I like your style big master
@brazilianguys568
@brazilianguys568 6 лет назад
show, I have done it many times on Ford MAF sensors and saved it
@thetopgtube
@thetopgtube Год назад
I’ve had a low idle for years. Can’t fix it. Stuck at 400 rpm. Replace maf Replace throttle body and the metal piece attached. Found 3 cracked pieces replaced them all. (Over 3 years) Tried the turning the key back and forth trick.
@PhattyMo
@PhattyMo 9 лет назад
You have to be super careful if you try to scrape the resistor elements clean..those wires are hair-thin. I would have started with the brake cleaner first,less risk of breaking the tiny wires. Good fix.
@steveguest8028
@steveguest8028 9 лет назад
Great informative video Paul, thanks for sharing
@OShackHennessy
@OShackHennessy 2 года назад
I’m a little confused on the negative trim with a dirty MAF. Just trying to learn this but that got me.
@ScannerDanner
@ScannerDanner 2 года назад
Only at idle. You'll still have lean conditions all other times. The best description that I've ever heard as far as this condition goes is at times of low air flow rates and larger surface area of the mass air flow due to the contaminants it actually dissipates more heat hence the rich condition
@OShackHennessy
@OShackHennessy 2 года назад
@@ScannerDanner Thank you for answering. I was approaching this under the premise that the contaminants on the MAF acted as an insulator thus falsely lowering the amount of voltage required to maintain constant MAF temperature under all conditions.
@hunkydude322
@hunkydude322 8 лет назад
That Airman is crazy, but anyways, beginning to understand some on LTST reading etc... makes its lots of fun once u get a better understanding reading the scanners correctly, thanks for giving us the auto enthousiast some great tips etc....
@ScannerDanner
@ScannerDanner 8 лет назад
+hunkydude322 thanks man
@NebukedNezzer
@NebukedNezzer 7 лет назад
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.
@afi1217
@afi1217 9 лет назад
hi there i have no word for your good videos on youtube . just love them . God belles you for your good work. can you pls tell me where to get the test lead you use, and what model it is .thank in advance.
@ScannerDannerPremium
@ScannerDannerPremium 9 лет назад
afi 121 thanks man! it's an old school Snap-on Mt2400 Vantage. The test leads are from my Verus
@e.o.g.739
@e.o.g.739 Год назад
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. 😢
@r.m4102
@r.m4102 4 года назад
Thanks alot bro my problem is hopefully solved 👍
@engineerstv8077
@engineerstv8077 2 года назад
Hi bro i am watching you From Bangladesh
@ScannerDanner
@ScannerDanner 2 года назад
Welcome!
@jrgsxr33
@jrgsxr33 9 лет назад
awsome post SCD....thnx...ill need to purchase ur material fo sure
@kkkk-wg6je
@kkkk-wg6je 8 лет назад
wow! you are great. Great vid. easy to understand even for a novice like me. You skipped all the BS and focused on the important information. nice
@ScannerDanner
@ScannerDanner 8 лет назад
+kk84 kk84 thanks so much!
@jerziballer24
@jerziballer24 9 лет назад
6times out of ten i use brake clean but even tho you clean a mass airflow doesnt mean its good thats a temperarely fix. There is a 5v snap throttle check and i bet you it wont pass. But good video,sometimes jobs have to get done fast. Keep up the good work.
@GiotheGhreat
@GiotheGhreat 8 лет назад
I live in NY and fucking mechanics don't know what to do when there is no CEL, I had to buy a scanner and learn to read live data, mechanics only like to replace parts based on codes until they fix a car with their trial and error B.S, where are the mechanics like you, Eric the car guy, Scotty Kilmer, Chris Fix? etc etc
@heyitschinoable
@heyitschinoable 7 лет назад
chirs fix is not a mechanic hes just a diy guy maintenence based
@jdtractorman7445
@jdtractorman7445 7 лет назад
Scotty Kilmer, lol.
@GiotheGhreat
@GiotheGhreat 7 лет назад
even worse!!!!! how embarrassing that is that a simple guy like Chris FIX his cars, he actually does!!!
@GiotheGhreat
@GiotheGhreat 7 лет назад
sorry if i hurt your feelings
@TomO-if7nh
@TomO-if7nh 7 лет назад
M Giovanni As a fellow New Yorker, I completely agree.
@ChicoDeon
@ChicoDeon 2 года назад
YOU ARE THE MAN
@3dvorator
@3dvorator 7 лет назад
HI Paul ,you are the MAN,but you know it.I have an old 85 Vette,this is a one year car since GM went with bigger modifications since the next MY.The car was garaged in the last 2 years and when i recently fired it up i obviously had a rough idle,engine stumbling and a nice SES steady on display...I know that f...g rough idle and i was expecting some 33 or 36 code all MAF rerlated...it was the case...long story short my 33 code indicating a maf sensor high reading vs tps was stored in memory.My first check was if it was the MAF the culprit,or the pricey MAF module by bosh rated at about 250 $ and ...discontinued.BTW the MAF is a 400 bucks item not better...MAf was ok since it hadn't 12 v...i jumped 12 v directly from the battery to the 12 pin of MAF and SES went out...It was the module,next check was assure if it was a faulty module or a wiring issue, or simply an oxidized relais coil lead...it was just a couple taps on the cover (after dismantling an entire dash to reach the module...problem solved...
@williegillie5712
@williegillie5712 6 лет назад
Ha ha I see where the battery drain is coming from. That thick cable with the two inch plastic fuse holder makes me think this person has a loud hi amp radio wires straight to the battery. Friend of mine had one of those and it drained his battery all the time. Dead battery in the morning. I told him “ thars yer problem”
@jimdoyle5861
@jimdoyle5861 8 лет назад
try spraying a q- tip with cleaner,to clean sensor, works well .
@christopherbarone3602
@christopherbarone3602 9 лет назад
Pocket screw driver the multi tool great video
@ScannerDanner
@ScannerDanner 9 лет назад
Christopher Barone I know, I even eat my lunch with it sometimes :)
@jnarez1
@jnarez1 8 лет назад
Hey my car has an issue where i get cat efficiency po420&30 i check my fuel trims i get about 10 percent on long fuel trims and about 7 on short fuel trims. When I raise rpm it drops to about 8&9 percent total fuel trims. I think it was vacuum leak so I did smoke test and I didn't found anything any ideas?
@madchild2389
@madchild2389 8 лет назад
my p0420 was a bad cat
@allenraymond5660
@allenraymond5660 Месяц назад
thanks brother, this did the trick.
@jrpost2003
@jrpost2003 9 лет назад
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
@bowser23231
@bowser23231 7 лет назад
good info . checking on why i cant get my dash guages to come back on.
@JOHNPHUFNAGEL
@JOHNPHUFNAGEL 9 лет назад
I just got a bunch of crap for using brake clean on a MAF at advance auto, the manager says ill F up the sensor. I told him what do I have to lose if I do
@ScannerDannerPremium
@ScannerDannerPremium 9 лет назад
Nice response!
@rahrah8076
@rahrah8076 5 лет назад
JOHN HUFNAGEL tell him to go sit in the corner and give his head a shake for selling dorman parts to customers hahahah
@dawncarrasco8320
@dawncarrasco8320 2 года назад
Wow what a difference.
@larrymencke8632
@larrymencke8632 8 лет назад
I got a good intro for ya paul ....yaba daba doooo lol nice video as always
@ScannerDanner
@ScannerDanner 8 лет назад
+larry mencke lol
@paulramos5052
@paulramos5052 Год назад
Dam this guys good at his bizz👍
@austinbachurski5452
@austinbachurski5452 9 лет назад
Just did this yesterday on a 2000 Lumina, brake clean for the win, never had an issue with it. Don't have the balls to try and scrape it though. =P
@supersport2778
@supersport2778 9 лет назад
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!
@cobraninetysix3883
@cobraninetysix3883 8 лет назад
Another Great One!
@Filmaker25
@Filmaker25 9 лет назад
WAAAAASSSSS UPPPPP! Who remembers that?
@los64vette75
@los64vette75 9 лет назад
Dan information is crucial in diagnosis, Shop Key requires a business license which most techs don't have, where is a good place for the technician to get information from when doing side work at home without it costing $169.99 a month? Wiring diagrams are so important when troubleshooting.
@SchrodingersBox
@SchrodingersBox 9 лет назад
I hate to say it but I am disappointed with this one... I was expecting to see you clean the MAF with a wire wheel on a bench grinder this time. Maybe next time....
@ScannerDanner
@ScannerDanner 9 лет назад
Schrodingers Box haha okay, I'll try it
@chrisjohnomnia
@chrisjohnomnia 9 лет назад
Hahahaha You are on point. I wanted to say that but noticed you've said my mind.
@johnbalderas1989
@johnbalderas1989 9 лет назад
If you can get a wire wheel that close to the actual sensor.
@bgregg55
@bgregg55 9 лет назад
Schrodingers Box or knock the grime off with a handy sledge hammer.
@EddieTheGrouch
@EddieTheGrouch 9 лет назад
Schrodingers Box Nah. Can only use a bench grinder on the open types like GM. The pocket type MAF requires a Dremel carbide burr (followed by black emery on a buffing cone for the Special Deluxe Two Stage Cleaning Package).
@Headturner111
@Headturner111 5 месяцев назад
Trying to help my son had same issue changed out mass air flow throttle position sensor valve cover gaskets vacuums lines look a little cracked and still starts up revs high then dies … o2 sensors both been changed and yet not sure if he has a vacuums leak or even hooked it back up right !! Plz help buddy 🤒😵‍💫😵‍💫
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