What Does a Mass Air Flow Sensor Do in a Car, Truck, SUV?

[@1AAuto]

√ *Watch the Video* √ *Buy The Part at 1A Auto* 1aau.to/m/Visit-1AAuto √ *Do it Yourself* √ *Save Money*

[@t.farris1755]

Could this cause a car struggling to stay started on a cold start? I noticed after checking my MAS it was completely black in which i could not get rid of the Residue when spraying it. Once my car has started warming up the idle smooths out with no issues after through out driving the car. I have no check engine lights nor codes. I’m totally confused as to what the issue is. I also change the spark plugs.

[@1AAuto]

+T. Farris We wouldn't be able to diagnose an issue like that here, you may want to have a local mechanic take a look at it. Thanks for checking us out! 1aau.to/m/Shop-1AAuto-c

[@lynnesaija]

Just went to order a MAF Sensor for my 98 Mazda but you dont have any..

[@zealgaming9123]

I don’t have a check engine light on but I recently checked my cabin air filter and it was really dirty with leaves and debris… the next thing it effects is the MAS correct?

[@kennydelong9804]

Good Advice

[@SB-cs2yv]

If I had to take a class I'd definitely want you to be my instructor. You're information is so clear and understandable.

[@Redberryfarm888]

Sensor cleaner $13 or so Amazon... A new sensor for our truck $55- $145 at 1A Auto. ( The first large round type shown on the table) - Will start with the cleaner. Thanks for the thorough video. 1 A Auto is our go to place for parts for years.

[@paulgreen9979]

My van (UK) went into limp mode when the MAF went. Main xdealer was £120 per hr plus parts, Local commercial garage £60 per hr, but they used original part. For the warranty.. now runs like a dream.

[@mandoughbeats]

I had a hose the ripped off and it was extra long so I cut it in half and it still fit . It’s running good but now it’s saying my MAF sensor circuit bank 2 code . You think it’s because the hose ? I just cleaned the sensors but it threw the code up again

[@truth9678]

Hey your a good teacher but if you want to be an excellent teacher do this simple thing slow down. You masterfully understand these different things of how a car works but your viewer is not a master talk to people as if they are children slow down how you explain things and you will be the best teacher you could be.

[@renostubbs8504]

You guys should be at a million views, all 3 of you guys are experts , simply the best I have ever seen.

[@cinnaberrry]

This man is amazing at explaining. The hand gestures, close up shots, and overall detailed information. Subscribed!

[@traw245]

You are beautiful 😍😍

[@chordarrow1]

Can do without the animated hand gestures, way too distracting. Awesome explanation though

[@jamesware1220]

He had. Me at "runnability"

[@soniasias6226]

You're so good at explaining.

[@Moe504.]

I know this is an old video but i had same problem with my Silverado my engine light was on and off mostly on thanks for sharing this information and you nailed it with explaining

[@whttrails]

Never even heard of MAF sensor. Very well explained and extremely helpful! Not my current issue but great job.

[@brandonbell6171]

Come on

[@biggiedickson]

Nobody who just heard of a MAF calls it a MAF. Liar. :D

[@robinhockett1191]

Thank you for help .but I need to know about the idle air control valve where is it located

[@1makeka]

Awesome, I know NOTHING about cars but I'm learning so much from you, I love it. I will be doing the check-in on my car MAF and air filter. You make it all look so easy, I hope it will be as easy for me too. THANK YOU!!! You are lovely.

[@azukapatrickebeh6557]

Your simplicity makes a great deal. My lexus es330 does Engine hesitation,and I can see where the fault is coming from.

[@deespasojevic3013]

Lenn is great at explaining the components specified job. Nice job bro

[@1AAuto]

+Dee Spasojevic Thanks for checking us out! 1AAuto.com

[@anthonymansell6716]

Thanks just changed mine. Performance restored

[@gaylordfreeman]

Enjoy this KZbin channel. I have a 2012 F-150 Lariat CrewCab 6.2L 4x4. When should I change the airflow, belts, hoses, shocks & struts?

[@deemack3719]

Either he was a CHEERLEADER, TRAFFIC 🚦 CONTROLLER BACK IN THE DAY... HIS HANDS WERE ALL OVER & VERY DETAILED!! 👍👍

[@dinhpham2746]

Len, thank you much for educational and clear presentation. I was be able to fix "check engine" light by cleaning MFA on my corrola from your video instruction.Thanks.

[@g.phelps5797]

Do you guys have a video about traction control stabilizing and abs lights on dash how to fix that

[@K_Nunez]

I like it when the content creator know what they are talking about and give good advise to their viewers. 🍻

[@jpose1859]

Thanks for the video. My mother in law's 2011 Buick Enclave is having problems with the check engine light indicating Bank one problem which says it has rich fuel flow? Changed both upper and lower oxygen sensors, but MFS, also could be a problem. We'll check into it again. Thank you for the video.

[@domingodeanda233]

That was pretty damn good, well explained and understood, thanks.

[@1AAuto]

We are glad to hear it Domingo!

[@caseyreginald6567]

He's the best. CAN U SO SOMETHING ON THERMO SENSORS

[@philliplake2666]

Great presentation, detailed and clear, i learnt things i didn't know i needed to know. Brilliant.

[@rs2143]

Here's a little advice I just purchased one for my 89 Buick 3.3 . I spent the extra money and bought it off them A1 auto parts rather than buying a cheap one well guess what it didn't fit the guide pins where .003 bigger than the old one with no taper on the ends and one crooked so I had to drill the holes on the throttle body bigger . I left them good feedback on ebay before I had time to install it . Hopefully you get better parts from them than I did . Not sure if I will do business with them again . 🤔

[@CarterLeigh]

this vid was one of the most informative, I'll be checking mine tomorrow & hopefully it's just a dirty MAF. thank you.

[@1AAuto]

+TLC Thanks for checking us out! 1aau.to/m/Shop-1AAuto-c

[@QueBall5235]

This guy is AMAZING simply AWESOME it's like he's driven my truck n know's feels n hears what my truck is doing HE'S MIND BLOWING THANK YOU TREMENDOUSLY SIR

[@pirihern9329]

I have a po102 and a po103 should I try cleaning 1st ? Would appreciate your take on this. Thanks

[@1AAuto]

+Piri Hern It is always worth it to try and clean it out to see if that fixes the issue. These codes are sometimes caused by a dirty MAF and related components but if the issue persists and the voltage is still not running correctly (throwing the same codes), it will more than likely have to be replaced.

[@pirihern9329]

Your response was greatly appreciated. Muchas gracias . All your videos are helpful especially for us diyers on limited income

[@craigslist474]

2 words. Ur gr8. Now I'm going to watch some more of your videos.

[@gene2200]

I HATE NEW CARS! was a Ford mechanic in 90s, Mustangs, Fairlanes... we'd re build them up then maybe put 390s 428s... In them and maybe a MSD box, my 68 Cougar is 400+hp 289, no GD sensors. We knew, know how to adjust the carbs and timing... 2000 Taurus is my 1st fwd drive car ever had, 8 yrs, mechanicly fine I fixed it, all these BS sensors can blow me all the sudden with the trouble codes. I'll be getting my 82 Bronco 4spd going again, sooner than later! Good video though!

[@matti2247]

Great , explanation. I have a question for you. What should I do to to enhance MPG for Toyota Rav4 2001. I have replaced the four sensors on the cathalyc converter. I am getting 22.5 MPG on High way. Thank You, Mateos.

[@rockwiskens2681]

Good afternoon sir I'm really appreciate your jobs please can you help me to found where the map sensor location please in the Toyota Noah 2007 please

[@robertwilkinson8421]

Outstanding Vid. The explanation of the Mass Air Sensor and how it works and what it does, helped me to better understand the Air Intake system and how it effects Gas Milage. The Visual Inspection under the Hood of the Air Intake and associated system Components was also good. looking for loose parts and Leaks, that is Good stuff. Well done, Keep up the Good work.

[@Dholiist]

Such a clear explanation ...wow ..he should get million views....

[@SamJasonLayos]

This is the most informative and entertaining instruction I’ve seen so far! 💪🏼💪🏼💪🏼

[@jamescaan2024]

I learnt alot about the sensor etc etc You're explanations are spot on and very easy to follow. Thank you

[@karenpost1339]

I replace my Mass air flow sensor twice on my 2012 Nissan Rouge in the past few months and my check engine light keeps coming with the same code. no leaks, changes air filter, reset the code and it drives great for a couple weeks, then when I'm coming up on a stop it will do a little chug like it wants to die and the check engine light is back on. any suggestions on what I should be checking for

[@habibpallath]

Hi.. Thanks for the video.. I have a touareg vw 2006 model has p0102 code and tcs light came on..thevair bag light also was flashing sometimes since long time..Replaced maf sensor.. It was fine for a half hour journey.. Tcs also went away..after hslf hour tcs light came on and scanned by odb2..code getting now p0101..totally confused.. Checked air filter snd hoses everything fine..intake manifold was removed once a time replace the head cover gasket.. It is fine fitted by looking..no leaks found anywhere.. I guess while code p0102 got i was got a misfire cilynder 1 and after multiple.. Do i removed out the spark plugs outvand checked one plug was little bent its metal rode where the spark occurs..removed out all plugs and coils..cleaned all with petrol and the bent plugs adjusted spark gap's and installed back andvsame time replaced maf sensor also.. After i am gettimg p0101 code.. Do uou have any idea about it..? It spatk plugs or coils damaged due to cleaning by petrol.? Is this bad coils or plugs cause this code..? I have a sudden or lazy pick ups sometimes while driving..gear shifting also not smooth sometimes.. But when clearing codes its runs fine for a hslf hour..after Tcs is on.. Air bag is also flashing some times....i am totally confused what to do.. Kind uour help please.. I am an Indian from Kuwait..

[@johnnyinostroza5807]

Your very good at explaining, thanks for clearing up some things.

[@juniorsainvilma]

Hello sir ,I like way you're explained . I have 2 problems with my 2001 isuzu Rodeo 6 cylinders . It's starting on 4 cylinders and don't want wanna start . Short down after sometime even though it running. Can you help me on that please..

[@timothymagruder6080]

I loved this guy , I've seen a lot of KZbin videos but no one was as clear as this guy thanks !!!!

[@Beobout6]

Check out Chris Fix channel he explains ALL with video.

[@mikecalloway2688]

I would agree, this guy's the best. Loving the (your), energy! Great stuff.

[@SambSylla]

Multimeter is more like it for DIY. Let's leave the $2000 one to professionals. Thank you for the informative video.

[@1AAuto]

+Samb wague Thanks for checking us out! 1AAuto.com

[@Discovery_and_Change]

My smog test failed due to "too rich," then I went to Auto Zone and used a machine to test for possible causes and it suggested I replace the "mass air flow" sensor, which I did, and am now hoping the 'check engine' light stays off 🤞

[@jcmc8615]

as an added bonus, you will see the check engine light iluminated, ha ha ...great vid. thanks.

[@Doe-Nutz72]

The hand gestures are killin me😆but very encouraging like a cheerleader 🤣Great job Sir🙏🏽👊🏽🤙🏽

[@mfranck100]

You are absolutely amazing! Thank you for the great enthusiastic, upbeat, and thorough lesson. Was going to use vinegar in a spray bottle to clean the sensor. So happy I looked into this first. One question. Can't seem to find how to clean the fixed filter in a 2004 Lexus RX 330. Do I have to replace the whole filter housing? The inside is full of, what appears to be, nesting material. It is my mother's car and it only sat for 2 months, intact. We replaced all of the coil packs and spark plugs. Codes read 5th coil pack malfunction. When we were ready to replace the housing and new filter, we noticed the fixed filter on top. Then noticed the sensor definitely needed cleaning. And the inside is nasty.

[@ceboshinga6919]

If the rev is over 2 (abnormal) which sensor should I check nor what can be the problem , Avanza 2020 model

[@robertmills2807]

Other instructions via You tube recommend spraying the inside of the Mass Air Flow Sensor with Mass Air Flow cleaner but you did not. Why? I am assuming you alluded to the reason why when you spoke about the internal circuit board.

[@rhondanorriswhatley7103]

I have a 1992 Chevrolet c1500 v6 when I try to start my truck it keeps blowing ECM fuss, I put a new one in and it blew again! What needs to be done and how do I do it?

[@eddiesaucedo3010]

Thank goodness for this guy explained it 💯, will look forward for his next videos

[@MrAloha999]

Definitely love this video and how it's presented...clear and direct...very very informative

[@1AAuto]

+Roland M Thanks for checking us out! 1aau.to/m/Shop-1AAuto-c

[@mobilecommunicationsnetwor5268]

Always enjoy your presentations. The ECU and details on how its works would be appreciated. Do they come from one or two manufacturers, then just programmed to the car company specs? What do you offer in terms of getting the live data out and examples of this. What do you think the 2020 and 2021 scanners models are going to evolve to?

[@longdriv]

Is there any procedure to clean oxygen sensor without dismantling it. Any kind of fuel injector cleaner help in cleaning O2 sensor. Which fuel injector cleaners are recommended for GMC TERRAIN

[@ComplexSea]

After you explaining how delicate it is and you dropped it my heart went into my throat hahaha

[@RockyMtnguy01]

Sadly the good explanation of how a MAF works is diminished by cleaning the wrong part of the MAF. What you cleaned is the air intake temp sensor bulb not the hot wire resistors. They are located deeper in the tube on that sensor and can cleaned as well.

[@1AAuto]

+Jay Anderson Thanks for the tip! We'll pass this info along to our production team.

[@jerryresch9774]

This is aunt a comment but it is a question. I have a 2010 Ford 5.4 L and it surges what would cause that.

[@tamemyniu4125]

Great job 1000000000℅ how can someone dislike passing on knowledge 🤦 either jealous greed like or cheap mechanics who rip's you off..keep doing the good work champ👍

[@1AAuto]

+Tamemy Niu Thanks for the feedback!

[@summer3245]

Can a mass air flow sensor cause the gauge to go up at startup if no what can cause the gauge to go up right away thank you

[@alexneil9116]

The way you explain this is awesome.

[@karenrice9143]

Awesome video I was ready to go outside with my screw driver.. very detailed in explaining.. thank you

[@tabithalents273]

Will the mass flo cause ur suv to shut off when pumping gas and then act like it’s out of gas when cranking back?

[@lissayed2224]

So do you take off the negative terminal for 15 minutes after you replace the sensor or not ? In the end you said to do it but then you also said not to because it will reset other things kinda confused.

[@allankisakye4581]

Relieve your negative battery terminal after replacement

[@orlandomedina3429]

The mechanic took my air filter out and didn’t put it back in. Drove it for a day without it on. Would that make sensor not work anymore? Car started hesitating and now it has check engine light on. Code p0420. Changed both oxygen sensors and light still comes on. Do you think the mass sensor went bad cause of the missing air filter?

[@MarkWilder68]

You guys are always there when I need you thank you

[@salmanhaider446]

My lexus rx 350 is giving all time bad gas mileage. I have changed air filter, new spark plugs, fuel injectors etc. I am left with oxygen sensor/MAF now. But there are no symptoms of these sensors going bad. Car starts normally, no jerking, normal acceleration etc. What should I do? What's causing bad gas mileage. Shall I try and change these sensors?

[@4tarsus]

super, super video, thanks. Question: in addition to cleaning the sensor probe, should you also hit the male/female sides of the connector with same spray?

[@cliftonraines2230]

Does it have any thing to do with transmission

[@Pharphette]

Thank you. I just had to have my sensor replaced today and wanted to learn why (and what the heck it was lol!).

[@malcolmbest7063]

Very direct and to-the-point appreciate it all

[@norag8265]

Does my replacement have to be original equipment?

[@corneliusbrown3561]

Thanks you for giving me some information how to check mass air flow sensor

[@rattnakaanthan6914]

hi brother. just a quick question, does changing the air flow sensor from a stock one maybe to a better branded air flow sensor could actually ehnace the air intake into the engine? does this modification actually affects the ecu or any parts of the car?

[@odohdanielokechukwu1180]

Does it cause high starting I mean when starting it in the morning

[@mahmoudalshawi2010]

Thanks for the information....I just clean my MAFS using your method...

[@1AAuto]

+Mahmoud Al Shawi Thanks for checking us out! 1AAuto.com

[@hightttech]

If you used method in video, you completely missed 2/3 of the sensor elements 😆.

[@brendonthomas2555]

Thank you! This was extremely helpful and informative!

[@muhammadtahirsiddiqui8347]

Nice explanation. I like your way of explanation.

[@1AAuto]

+Muhammad Tahir Siddiqui Thanks for checking us out! 1aau.to/m/Shop-1AAuto-c

[@iajtheodora4950]

is it possible to turn on the AC or use the windows when this happens?

[@jamaaljackson4488]

I just replaced mine a few days ago. How important is it to take off the negative battery terminal? I did not do that. Do I need to do it now?

[@annamckesson120]

YA'll are super helpful for a widow that loves to work on my tahoe

[@Camry-pe6up]

Thanks for this tech. Info. Q.. Can we use DW40 for cleaning MAF sensor... Regards.

[@benjaminhernandez3425]

why the RPM in my nissan murano 2007 stays at 3 RPM when's I am waiting at trafic light ?

[@selwynlawrence7748]

I have a Audi A4 B8 2008. I bought a new maf sensor but car idles very rough and stalls. I idled engine for twenty plus minutes and got it to idle. Problem is that when I come to a stop street or stop somewhere it stalls. Rev counter drops drastically. Any advice

[@boomingrecordsllc9898]

My mustang 01 doesn’t wanna accelerate..it goes in reverse but doesn’t wanna go forward..could this be the MAF ?

[@1AAuto]

+Booming Records LLC We wouldn't be able to diagnose an issue like that here, you may want to have a local mechanic take a look at it. Thanks for checking us out! 1aau.to/m/Shop-1AAuto-c

[@ProductUnboxingMore]

I cleaned mine and all good!

[@stanleyhenry3700]

Great instructor, this guy is the real deal. Not the problem I have but wow he is good. My 2013 Ford Explorer, stops on me while driving. I had a diagnostic tool plugged in which indicates code PO2111 ( throttle body stuck open) I have never done this before. How do I solve this problem, and how do I locate the throttle body actuator? Thanks for your help in advance.

[@t.real_adams6898]

Hey I have a 08 Chevy impala ls (I Got this code p2440) but part is brand new - (P2440) Current DTC 1/1 Secondary_Air Injection System Switching Valve Stuck Open Bank 1-

[@michaelhodge4885]

If this part is not working right can it cause my 5.3 Chevrolet Silverado to miss at under 2000 rpm ?

[@iamthemaninde]

I have a 94 gmc sonoma with the 4.3 vortec. Its idling REALLY high at start and higher when I put it in drive or reverse. Ive check everywhere for vacuum leak and can not find one. What else could cause this?

[@Habitation2023]

My car was flooded and the engine was started in the water. sensors were replaced. Besides mass air flow sensor what is still causing it to run badly?

[@jimparris9997]

I replaced Mass airflow and it failed quickly seems to fail when it hot outside what else could be going pn

[@chrisyo295]

Can a bad mass air flow sensor cause misfire to the engine? Thank you Good video

[@1AAuto]

+Chris yo Thanks for watching! A contaminated or failed mass air flow sensor cannot measure the amount of air flow correctly. This causes the engine computer to miscalculate the amount of injected fuel. As a result, a bad mass air flow sensor causes various drivability problems, including a no-start, stalling, lack of power and poor acceleration.

[@chrisyo295]

@@1AAuto thank you guys good to know that we have ppl to share good advice with us. Thank you

[@theripper791]

Good presentation. Very informative and to the point.

[@oldaccount1085]

You are awesome my nissan senta 2014 sv. 138.000 mile stall while driving at cut off what do i do to get it start a goin

[@islandbeaches395]

Lenny the penny. If installed backwards what is the effects on the fuel trims?

[@brianthomas6956]

I am having 420 coad I have changed exhaust manifold cattslack converter and still get coad.I am going to replace this cheap part shot on the dark.

[@youngstarzable]

Hey good day from Trinidad.....I have a Toyota tercel but I don't know what the mass airflow looks like or the crank shift sensor nor its location . Can you please help ....

[@Clean-N-ShineInDfw]

Can this cause the speedometer to jump up and down as I'm driving?