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Thanks brother

helped me figure out whats wrong with this Audi A5 i got sitting out front, idle is weird and vibrates alot cleaning the sensor fixed it had dirt & oil on it!

Can the Maf sensor half fail?

"Wisdom my lad is never cheap!" (Terry Pratchett) - And were just blessed to have found a FLOW of information! 👍

$5 in 2015, however In 2023 Mass Airflow Sensor Cleaner is $13 for a can.

I have a question I just installed a intake on my 2010 civic it ran perfect with the stock air box but not it’s throwing a code for throttle spring malfunction I can’t seem to find the issue it runs for 5-10 sec then shuts off also my check engine light is on

I agree. Some people try to impress by speed talk and just end up rusting their communication ability. And, yes, HE appears to know what he’s talking about.

He is 100% correct. I hate MAF sensors. Lol

I got a 2012 ford focus and every now and then there is acceleration hesitation where I lose power for a few seconds when the go pedal is pressed when taking off but there is no check engine light on at all. I'm thinkin it may be the spark plugs/ignition coils or mass air flow sensor is dirty. the LW focus 1.6 liter 4 cyl only has 75,000 kilometers on it.

Hello sir. I've been experiencing the issue that MAF fails... I have aliexpress BOV. The stock one melted somehow and I needed to change it for sometime.. It's the second time that maf failed. First one was because the inlet pipes were leaking when I bought the car and after I change that it was OK. now I bought Splitter valve from Forge and I'm wondering will that fail again if I use it as a BOV? Do I have to use it as a recirculation valve? my car is 2004 audi tt mk1 225hp stage 1 mapped, downpipe, muffler delete, r8 coils, iridium spark plugs, KN Air filter, k04 Hybrid turbo... What are your suggestions? How can I deal with this MAF failure.. and also do you Suggest Race type of N75 valve to this car with those mods? Thank you.

Information presented on a nice rhythm and concise.

I have a 2012 Nissan Altima and having 3 problems with it that's causing engine light to stay on. Vent control open ,mass air flow range performance and canister purge valve. Are all of these connected with each other like is 1 causing everything else to fail. Is it just the mass air flow sensor that is dirty. Does this have to do with higher RPMS at idle

It's Charles again my apologies the sensor is a 5 wire sensor, I have done no testing on the wire volts, because in that I don't trust myself in screwing up the ecm.

I have a 08 chevy silverado lmm 6.6 duramax. I have purchased everything HSP, except the egr delete cold side up pipe. Anyway with the cold air intake as far as temperatures into the motor if it's 28 degrees outside that's what shows on my cts2 at the sensor. My problem is I keep getting a po101 code putting my pickup in limp mode. Using cts2 to clear the code. I've undone the negative on both batteries, purchased a new sensor, even cleaned it. The code still keeps coming up, but not near as frequent! Any suggestions as in a hard reboot? I don't know what to do, I know a dealership going to get my $$$ for probably something very simple.

I didnt know you can "see" air going through..lol.

Thank You

Is there a way to check my tune for the max boost available?

Great video! Thanks!!

Shaun Church sir reading the comments I in gather you excellent at this and your explanation many find veru helpful. I am no mac, a guy did some diagnostics on my 'VW POLO 1.6 , but I still have a problem. My car has engine surges.....irregular idling ....fast and slow idle. And now this last few days there is a tendency to cut off.I down the pedal to keep from switching off.seems to this happens if i am stopped ar an incline. Am i sitting with multiple problems...? Have you covered this in any of your other programmes that you can direct me to..?much appreciated. THANKS JOHNNY

Its been 6 months since I have problems with my mazda 3 1.6 2008. In idle it is rough, on accelerating it has problems, when I turn on AC it slows the shit out of it. I have been in two licensed mazda repair shops, they changed chain, spark plugs, oxygen sensor .. and the problem is still there. I will try to clean MAF by myself. If it turns out that this is the case .. I will sue them all. xd

Looks like people need to study PIDs

My car is still hesitating when accelerating at slow speeds after changing maf sensor n spark plugs. Pl advise. Tqvm

Wow I wish you could be my mechanic

I just put a fresh MAF into my '96 Lincoln Town Car. The one I replaced I'm sure was the original. It's like I have a new car. MAFs can go bad. Clean them once or twice. Beyond that, just buy a fresh one and be done with it.

When starting my car while being parked. It idles perfectly, but it randomly changes idle sound.. Not sure why. But on a 300K mercedes, would it be a good idea to change the Mass airflow Sensor anyway just for the sake of it being a new one? Would my engine benefit from a new sensor?

BEST WAY TO TEST YOUR SENSOR IS START THE CAR UNPLUG SENSOR IF CAR STAYS ON SENSOR NOT WORKING REPLACE IT...SIMPLE NO NEED FOR 10 MIN TALK TO MAKE $$

One question. I have a Nissan Micra 2020, and suddenly at 100 km the speed pedal didnt work for 5 seconds and the the start stop button which i had opened had been closed (seems that the whole system had been reseted) Then after 5 seconds car woke up and i could speed up again. This happened 2 times in 1 day.. Any idea what might be the problem?

What if you try to take out map sensor and take the one bolt on a 2016 Hyundai elantra so take the bolt and wiring harness off and it does not want to come out!? It moves left and right but it does not want to come out!? Thanks! Want to clean it but nervous to really pull it out hard dont want to break..thanks again

Uhhh..... uhhh ......yeah, ok. Uhhh.....what......got lost in blah blah blah blah section... I dont know much about cars but when people SHOW me while they're explaining I get what they're referring to... you're talking to much and not showing anything. SORRY but that's how I learn, Show & explain that's the key...

I have a 2010 Hyundai Elantra with a rough idle. I have a Launch 123 i scan tool. The car idles really smooth with lots of power when it was when new , if I detach the MAF sensor. What should I be looking at? Gas mileage is poor and not as good power wise as when it was new. Drives ok. Could I have a hot wire issue. I have the shop manual form Hyundai . The scan tool will read live data, and I can save the data or freeze frame the data and print it. I notice the timing is erratic, and the idle speed drops down and then comes up! into the range it should be. Engine timing is nit smooth. I had the timing belt and water pump changed because of the age. It had no influence on the rough idle. What do you suggest ? Thanks EJR

My bmw 428i n20 when I stop the car like loses rpm and has even turn off on me like twice will this have to with that sensor? Cleaning it or maybe buying a new one? I have a after market injec intake

Physics and mathematics in context... Hot...! Thank you, I now realise I have misdiagnosed maf symptoms due to misunderstanding causes... make alot more sense now!

well, this video is super helpful....Thank you !

This video is amazing! Good job in explaining everything!

Great video...thank you!

I just purchase a Auto Zone MAF sesnsor for my 2004 350z. However after installing this, after 20 minutes driving throttle response went away, like cruising pace kind of speed. Another words, I push the gas pedal all the way to the floor....yes the car would go, pick up speed. But, nothing dramatic overall....not impressed! I did the complete throttle body relearn, press pedal 5x after 10 seconds hold it down to 20 second count. Still did not work! So put my original one back to the car...press the pedal rpm went smoother, as far as rmp tach, but same result...really bad gas pedal accelerator response. Btw...No Engine light also!! Can you help??

I have upgraded from 2 port solenoid to 3 port solenoid. Can you tell me in what percentage it would be appropriate to start decreasing to try to emulate the behavior of the 2 port?

Great video, thank you. Very informative.

Your explanation on the function and the importance of the MAF being clean was outstanding, thank you...

In your Subaru example would that cause a bucking or hesitation when boost comes on at partial throttle? Specially 2018 WRX.

After replacing MAF does the vehicle need to be run for a while before going back to normal?

What happens when you have a sensor made for a 4.o liter motor on a 3.0 liter engine

Could the air flow metre make tour car jump and jerk around

rap god

I replaced my mas air flow sensor and it started running a lil ruff how do i fix that. 2004 infiniti g35

Very good video, I have a couple of doubts about this. When increasing in the Boost table, should I increase the WGDT in equal conditions, is there any general rule, I calculate or is this done by trial and error?

I was revving my engine so that I could test out my two-step and all the sudden I start getting these codes with po111 po113 ... The only thing I can add to this is that my exhaust pipe was disconnected from the downpipe and my secondary oxygen sensor is just 2 inches away from the flange. It ran fine when it was cold but after it warmed up and started acting up. The next morning I started a cold but it did the same thing. I’m about to work on it now but I wanted to leave this comment because I’m wondering if having The secondary O2 sensor exposed can trigger something. 2003 Nissan Sentra spec V 2.5.

Ez30r compatible?

Can it cause smoke out the back?

too much useless detail and too-fast talking. he is talking for HIM, not for a regular guy. An explanation that a normal car owner can use and understand is what is needed. Not a lecture on air in a car engine and the ways it can get in... explain how to find leaks and stop them so the MAFS 'sees' all the air the engine uses.