How to clean and service MAF air flow sensor VVT-i Toyota Corolla. Years 2000 to 2015

How to clean and service MAF air flow sensor VVT-i Toyota Corolla. Years 2000 to 2015. Do this service every 50 000 km. Clean this sensor, if any issues with motor running.

[@BillOfAllTrades2016]

Anyone watching this video DO NOT USE CARB CLEANER ON SENSORS. Use MAF sensor cleaner so you don't damage the wires. And you should never physically touch the inside wires. Good thing there is a disclaimer in the video

[@PeterFinnTheCarDoctor]

Thank You for feedback. :-) Best Regards Peter

[@acekhmer]

I used carb cleaner for cleaning it. Are my wires fried?

[@draxus1266]

depends to what result you gotm did your car got better idling & no hesitations, if yes, so your wires are definitely fine. For some their maf sensor cannot work properly when sprayed with carb cleaner or even a cocntact cleaner. It's still best to use MAF Sensor cleaner, safest..

[@istiakahmad4727]

how about gasoline itself ? it evaporates .. or wd 40?

[@jenridge7768]

@@istiakahmad4727 That's what I was thinking. Not Wd-40, but I might try gasoline, lol. MAF sensors arent that expensive online at rockauto (aftermarket) so it's just as easy to replace it, inmho. $30-35 usd

[@brendancaldwell7755]

There is great satisfaction to be gained when you work on your own vehicle and complete jobs.

[@PeterFinnTheCarDoctor]

Thanks for info.

[@juusoristo354]

Good videos, perfect finnish accent. I replaced plugs and air filter on a 2008 1.6 Avensis. There was a tiny gas leak which became a huge leak when I disturbed it. O-ring in two pieces. New o-rings from the dealership.

[@PeterFinnTheCarDoctor]

Thanks for sharing

[@jenridge7768]

I just LOVE LOVE LOVE your videos. I have saved so much money by replacing parts myself thanks to you.

[@PeterFinnTheCarDoctor]

Hi Lady, Thank You.

[@38elcp]

Like bill said, NEVER use carb cleaner. Man contain a light oil . Buy a spray can of MAF sensor cleaner., available at any parts store. It's good for many cleanings.

[@PeterFinnTheCarDoctor]

Thanks and Good info ! :-)

[@RG615]

Awesome Peter. Love your helpful videos. Keep them coming. 👋👍

[@PeterFinnTheCarDoctor]

Thanks, will do!

[@leandromemoria7479]

Tenho um Corolla 2003 e esta com alto consumo de combustível, hoje fiz a limpeza desse sensor MAF com limpa contatos. Vamos ver se vou ter alguma melhora.

[@PeterFinnTheCarDoctor]

Thanks your comment 😀👍

[@griffinmachayi5078]

Thank you so much for sharing your knowledge.

[@PeterFinnTheCarDoctor]

Glad it was helpful!

[@draxus1266]

Hi sir Peter, I'm planning to this by next month (june) and really hoping to help our family corolla altis 2002 (220,000km) somehow bring it's power or better idling, better revving. Hopefully me & my partner could buy a CRC maf sensor & throttle body cleaner. O, I'm going to replace her pcv valve as well. I'll give you hint about the result. Thanks! (also, please use a cleaner that was INTEND only for maf sensor cleaner & do not use anthing else, this is way much safer for the sensor due to it's sensitivity)

[@PeterFinnTheCarDoctor]

Thank You. :-)

[@draxus1266]

Hi Peter! I already have the proper sprays, finally with nice budget I completed it for the car and excited to do these this the coming week end. Anyways, just wanna ask some issue again regarding altis 02, it has a problem when we bounces at humps theres a sound like tearing at front wheel and I''m not sure if those are bearings or just ball joints. I already inspected last week end the ball joints and their seems so fine, just replaced the cv joints a year ago & sounds differs from cv joint issue. Whats your suggestion about this peter? The sounds just seems getting worse as days goes by. Thanks in advance again.

[@jbare777]

Thanks for letting me know I can use carb cleaner for cleaning the MAF sensor. I'm going to drive my car around ('10 Corolla S) and see if that helps. Sometimes when I pressed on the gas the car didn't accelerate at all. I cleaned the air filter and the MAF sensor, I'm hoping the MAF sensor being clean will fix my issue.

[@PeterFinnTheCarDoctor]

Thanks for info. :-)

[@jbare777]

Indeed so far it has fixed my issue.

[@draxus1266]

NICE!

[@bilalunverdi659]

Rölanti ayarında titreme mi var dı bu işlem onun için miydi?

[@yingcluk]

Is there any specific foot pound of torque that we need to use to tighten the MAF sensor screw onto the back of the air box ?

[@ethans6.0]

i would try hand tight because it’s all plastic

[@khalidmohammed4338]

Where is the cam shaft sensor on these Toyota corollas? Peter, please do a video or show where it's located

[@PeterFinnTheCarDoctor]

Thanks for comment. 😀👍

[@VeryBadReputation]

Can this be the reason I have to double crank my engine? This happens like once a month. I recently changed fuel pump and fuel filters. Still did it a few days ago

[@PeterFinnTheCarDoctor]

Check compression pressures. If they are less than 10 BAR, then that is the reason for a bad start. Watch the video how to do the check: kzbin.info/www/bejne/pnbZhqSOqMqdodk

[@yamanalamoush2746]

Hi My car is corolla 2005 in the morning when I run the engine it goes off I need to keep pressing on the fuel pedal to keep it running For about 5 minutes continuously

[@PeterFinnTheCarDoctor]

YOu need new throttle body

[@cleavlandathanaze6300]

Hi nice video i have a 2002 toyota carolla runx zz an in the morning the engine have to swim a long time before starting. The when the engine is hot an idling it will shut off. I put a scan tool on it an the mass air flow control has a fault. So i change it an i still have the same problem...

[@PeterFinnTheCarDoctor]

I think you have worn piston rings. Check compression pressure and replace new piston rings. Here is compression test video: kzbin.info/www/bejne/eKqqaH-cZbd3p6c

[@e4gsony378]

i did exactly what you said,new air filter,new denso plugs,98ron fuel also cleaned the mag sensor,but still there are times the rpm i dropping to 600-500. what else can be causing that mr. finn?

[@PeterFinnTheCarDoctor]

Hi, your engine could be worn out.

[@PeterFinnTheCarDoctor]

Please drive about 200 miles and car computer setup the idle speed.

[@riverbrowning8135]

Try cleaning the throttle body ! Its probably dirty I have a 2009 corolla with only 109,000 kms and it does the same thing . You have to take the throttle body off and spray it with throttle body cleaner .

[@_DixonCider]

Check for a vacuum leak in the hoses and air intake manifold.

[@masumahmed896]

Mr. Peter have a good day. How can we replace wiring of the sensor? Waiting for your best suggestion.

[@PeterFinnTheCarDoctor]

New wires

[@ZaahirJappie]

Hi Peter,Thanks for the video. I'm having a similar issue, but it's not the air flow sensor. My engine won't start properly unless I press on the accelerator pedal to assist it. What could this be? Also, there are new spark plugs installed.

[@PeterFinnTheCarDoctor]

Maybe the engine piston compression rates

[@ZaahirJappie]

@Peter Finn the Car Doctor car is idling again now as normal and start up is good. I was told it is the throttle body. I opened mine up and it doesn't look super dirty.

[@gregst.martin4889]

My 98 Corolla is reading spark plug 1 misfire changed all 4 plugs and spark plugs. Car is running rough especially idling and back fires and I smell gas. Is it located in the house after the air filter just clean it or do you think it's a clogged injector. I did have oil in spark plug one. Do u think I need injector cleaner?

[@PeterFinnTheCarDoctor]

Thank you for your message. I have read your message. 😀👍

[@galvan5615]

Sounds like a bad injector needs replacement. But I would change the valve cover gasket which probably caused the leaky injector.

[@WillGamingIsLIVE]

Let the Smurfs free. Also use “mass air flow sensor cleanor”

[@PeterFinnTheCarDoctor]

Thanks

[@WillGamingIsLIVE]

@@PeterFinnTheCarDoctor hope all is well man

[@aaronchinibas3132]

Will a dirty mafs cause the car the cut off? My corrolla cuts off while driving and restarts immediately. Im getting no check engine light and no reading on the diagnostic. Changed crnk sensor n cam sensor, fuel pump, dont know what to try again.

[@PeterFinnTheCarDoctor]

Yes, it could do so.

[@visker81]

does this also work on corolla E11 facelift with 1.4VVTI engine?

[@PeterFinnTheCarDoctor]

tf2cheats Yes and Thank You for feedback. :-)

[@babuinu1984]

Do you know if WD40 good to use for cleaning?

[@anikibrother7691]

mmmm CRC MAF sensor cleaner only I think

[@NYRican1505]

Would this throw a misfire ?

[@PeterFinnTheCarDoctor]

Yes

[@alexfeliciano5494]

You have to use mass air flow sensor cleaner and nothing else.This cleaning method is wrong. Just wanted to inform the masses

[@PeterFinnTheCarDoctor]

I have read your message, Thank you 😀👍

[@Enerdhil]

I went to Auto Zone before watching this video, so that was my plan all along. Thanks for the video.

[@omnia1337]

can i use breakcleaner?

[@PeterFinnTheCarDoctor]

Maybe no

[@therookabeng7278]

Is this applicable to Toyota Avensis 2004 models?

[@princess89pinky]

Should be similar

[@The_Touring_Jedi]

Engine 1.4 vvti and 1.8vvti and 2.5 vvti are almost identical...Toyota best engines.

[@the__real__world]

Peter I have a problem and i think is from MAF sensor. When car have speed with AC on and i press cluch pedal engine turn off... wittout AC on is everything ok. Another problem is acceleration... if I press very fast acceleration pedal only after some time (1 or max 2 seconds engine will accelerate) and don't have torque and horse power... past days I clean MAF sensor and my toyota yaris 1.0 vvt-i 68 hp from year 2000 run perfectly withouth this problems... but after replace some gaskets from fuel injectors I think MAF sensor goes wrong. Maybe imperfect connection... i don't know... can you help me please? that problemsi had 1 year, but i clean all engine parts except maf sensor. After I read about maf sensor and this need to be clean, past days i clean it, work perfectly all thinks, but after I need to open again, something happend because I have the same issues...

[@the__real__world]

yesterday I mount it, check engine light on, i drive some km and next day all looks good, no problem... now works again very good I think... CPU not "see" immediatly sensor if I connect, and need some time to be in parameters? Or what happened...? why I have this engine behavior... I forgot to say that when engine have that problems, after some time (cold engine about 5 hours) if I want to start it, starts but at 500 rpm after a sec goes to 1200 rpm which is normal. Now I didn't have that problems anymore, but what could give me those problems...?

[@PeterFinnTheCarDoctor]

Hi, how much You have miles.

[@the__real__world]

173.000 km

[@the__real__world]

i think problems comes from contact between wires, i try to test it from this site but i doesn't have good tools, i need to let jack open to can test it... this is how to test it troubleshootmyvehicle.com/toyota/1.8L/how-to-test-the-maf-sensor-2 this is my device www.google.ro/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0ahUKEwjw94jZ8tvOAhVL2xoKHYQnBXwQjRwIBw&url=http%3A%2F%2Fwww.douamaini.ro%2Fcum-sa-folosesti-un-multimetru-partea-a-doua%2F&bvm=bv.130731782,d.ZGg&psig=AFQjCNGn-gnH_qr7AQptKymUWCcjSZFWiw&ust=1472191453244193

[@the__real__world]

on wire 3 (middle) I can't measure it maybe because that wire have electrical current after you connect jack to sensor. But on wire 4 which I must have 5V I have sometimes 8V. on others wires I have about 13V (it's normal)

[@gamingmigz7290]

Hi I have a Toyota Corolla 2002 VVT-i engine, my problem is when I start it in the morning, my RPM is rough then dies after a few seconds, it will stabilize after 2-3 starts. Even when my engine is already warmed up, my normal startiing will be 2-3 cranks. I already changed my ignition coils, spark plugs, and air filter, will cleaning the MAF sensor solve my problem?

[@PeterFinnTheCarDoctor]

Yes

[@barr.abrahamocheje]

clean your cranshaft sensor it will solve the problem

[@jeanclaude6856]

Ok i replaced it with a brand new one and after 1 day check engine light came back again with code 101 102

[@PeterFinnTheCarDoctor]

Good comment, thanks 👍

[@mahimmahmood3953]

If I don't do it for 5 or 6 years what happens

[@PeterFinnTheCarDoctor]

Mahim Mahmud Your motor runs badly and engine vibrates.

[@mahimmahmood3953]

Ok thanks

[@gimne]

Haven’t cleaned mine in 17 years on my 2006 corolla and it has 240k miles.

[@marke.9971]

mass air flow cleaner only not carb cleaner dude.

[@PeterFinnTheCarDoctor]

Great point!

[@samdavis7476]

car air flow sensor cause a hard start

[@PeterFinnTheCarDoctor]

Yes

[@albertop5320]

do not use carb cleaner !

[@PeterFinnTheCarDoctor]

Ok

[@joeybrown1571]

Always use The Air Flow Sensor Cleaner and not carburetor Cleaner!!

[@PeterFinnTheCarDoctor]

👍😀