Mass air flow sensor experiment I check & replace I BMW e46 e39 P0100 P0101 P0102 P0103 P0104

[@kyplummer3657]

Thankyou you have the best MAF video out of them all and you are the only one trying to address this issue!

[@DIYTEA]

Glad to hear that mate!

[@darioc.4414]

This video ist just perfect - it's simply explained, it's on to the point, it's not too long, it's not too short, and everybody can do it by itself. Excellent work! The world of KZbin and DIY-ers needs more content like this.

[@rcox2926]

Than you for a thorough and detailed report!

[@tonymottram1396]

Thank you so much for your video very informative and the way that you explain things

[@DIYTEA]

Glad to hear this! Thank you!

[@maxmayhew6500]

Hey! Thanks for the useful video. I actually have the same after market MAF on my e46 318i (n42) - different engine. I get a semi rough idle here and there, pretty sluggish acceleration in some gears at certain rpm (although old car with smaller engine), plus an error code for the sensor, so it could do with replacing I think. I don’t believe this MAF is compatible but do you happen to know what oem is for the n42 engine? Departo suggested one from Hellas (apparently an ex-manufacturer for bmw). Autodoc offered a Bosch. I’m hearing across the board that anything other than oem won’t work well, so I’m keen to resolve properly. Thanks!!

[@DIYTEA]

Honestly for the N42 I dont know which oem manufacturer it was for the MAF. But I think it should be bosch because when you look for used MAFs on ebay, they are all from Bosch as original parts.

[@ROBY1980320]

Hello, sorry my bad english. I measure with the tester, red cable on the ECU measurement terminal, I start the car and it gives me 0.5v, when accelerating it gives me 2v or a little more, are they correct? It's a BMW e46 325i. Unstable cold start. going well! Thanks

[@Khaledghaffari]

Which brand was the best in fuel consumption?🤔🤔

[@kyplummer3657]

I cleaned and plugged back in it was unplugged and driven that way before I got the car do you think it will relearned if I keep driving it with it cleaned and plugged in

[@riseofthemashine2880]

M54b25. My old Siemens and Atec mafs are showing 3,22 and 3,3 g/s at idle and I have Lean codes p0171 + p0174. With a new Siemens(VDO/Continental) it shows at 744 rpm 4 g/s (14.4kg/h) and no codes. So I have almost 50% more air consumption as you. Trims are perfekt. How is it possible?

[@DIYTEA]

@@riseofthemashine2880 two different engines, mine is a M54b20... but this still does not explain the air massflow difference.

[@snaildogbeats]

Nice work mate! thank you ♥

[@tonilcc7856]

Hello sir , I own a BMW e46 320ci and I have some problems with it ! Is there any chance that we can talk somewhere private and maybe you can help me out fixing it !

[@kyplummer3657]

Can’t get a straight answer, it seems the OEM mass airflow sensor has three different brand names the box says continental you said it was a Seimens and the BDO or VDO? Mine says Siemens I thought it was an aftermarket I’m having issues. Got the car as payment from someone recently they said it had a bad O2 sensor but I suspect it is actually the MAF Ships and run smoother when it’s plugged in but goes into lamp mode so I unplugged it again after trying to drive it for a couple of days it doesn’t always do the same thing and the air filter was dirty.

[@DIYTEA]

Very simple: the OEM part ist VDO. this company was belonging to Siemens, that's why Siemens VDO. But now the VDO brand ist belonging to continental.

[@kyplummer3657]

@@DIYTEA Thankyou you explained it in the video Thankyou very much. How long should I give it to relearn before I need to just get a new mass airflow sensor it shifts better with the sensor plugged in but occasionally goes into limp mode so I unplugged it again

[@kyplummer3657]

VDO is over 300 bucks I want to be sure

[@DIYTEA]

@@kyplummer3657 The part number of the VDO Maf sensor is 1432356 (BMW part number). But the manufacturer part number is 5WK96050Z (VDO part number). I got if for 160€, may arround 170 bucks. 300 is too much. Check online may be you find a cheaper one. Some part sellers are may be still selling the MAF which comes in the old white box under the brand VDO Siemens and pretending that the part is the only one 100% OEM. That's not true because the VDO is now under the brand Continental and the box looks diffrent (like on my video) and the part is the same. The adaptation will take some days, in my case was may be 3 days. It depends from several factors. You have just to drive the car, the ECU will do the necessary.

[@kyplummer3657]

@@DIYTEA wow man Thankyou so much I have been trying to read and watch videos on this for days and can’t find anyone who knows what they’re talking about all they do is show how to change it, any idiot can figure that out without a 20 minute video 😂. Thankyou Thankyou Thankyou!

[@thesuperflygamercoolsome4006]

I had problems with my maf and I got one and it was a cheap one it didnt work so I couldnt get more money for a nuther one so I took a bounty sheet wrapped it around the maf and my car been running fine for two years with no problem

[@DIYTEA]

Thats an interesting solution. You got a leak on the MAF or what?

[@thesuperflygamercoolsome4006]

@@DIYTEA I just put it on the old one and it worked I was surprised I had all the hoses replaced couldnt figure out was wrong dealer told me I needed a sensor I disconnected it it ran fine but would come up fail trains safe mode then I took the bounty sheet and put in on the the front of it where the air flows threw and it worked

[@smgees]

@@thesuperflygamercoolsome4006 can you please explaian a bit more detail on how you put the bounty sheet in front of the air mass sensor..cause on the 1st comment you've mentioned wrap the air mass sensor with the bounty sheet..also what type of bounty sheet you're using..sorry 1st time i heard stuf like bounty sheet..tq

[@thesuperflygamercoolsome4006]

@@smgees it doesn't matter witch sheet from but I put it just before the mass airflow sensor not after we're the filter goes the housing just before that take off the clamp cover the hole with the sheet tighten the clamp and run it see how it works out..👍

[@smgees]

@@thesuperflygamercoolsome4006 are you putting the sheet on the old maf sensor or the cheap one that you buy?

[@colwell2869]

Where on earth do you get the continental MAF from?

[@DIYTEA]

I got it online from Daparto, in Germany is available

[@erensink924]

Did you notice a lower fuel consumption after replacing the air flow sensor?

[@DIYTEA]

I did a lot of things on the car and I noticed a better fuel consumption. Now I got arround 8.4 L/100km in a mixed driving cycle. But in my case the Mass air flow sensor was not causing a higher fuel consumption. But the old one does because he was faulty.

[@E36andE46vlog]

Subscribed your channel!

[@edvinas5702]

Hi, if maf died and absolute dont work 0v , can car lost Acceleration and power?

[@DIYTEA]

Absolutely.

[@stefanodone8218]

Very interesting, i have One question : Continental vdo part original n 143256 are you sure? Great video ,i have same problem my bmw 320 convertibile m54 226 Greetings from Italy

[@DIYTEA]

Grazie Stefano! The part number of the VDO Maf sensor is 1432356 (BMW part number). But the manufacturer part number is 5WK96050Z. I get my part form this website. I do not know if they deliver in Italy. Check the table of the corresponding vehicles of that MAF. www.daparto.de/Teilenummernsuche/Continental-VDO/5wk96050z?modelId=d8e3afde

[@stefanodone8218]

@@DIYTEA Yes of course match Number , thank you very much my friend👍👍👍👍👍🇮🇹

[@tonybandz5337]

So I’m confused what mass sensor should I buy

[@stefanodone8218]

@@tonybandz5337 continental part original

[@TheButiko]

on my e46 2.2 maf sensor shows 9.8-10.1 when idle, it is good ?

[@DIYTEA]

That's too much. Not possible. Should be between 0 and 5v. May be you measured the 12v goint to the MAF.

[@TheButiko]

@@DIYTEA they told me it is low and must be 12kg/h air flow, this 9.8 is not voltage, it is air flow 9.8 kg/h

[@DIYTEA]

@@TheButiko Oh sorry I though you were talking about the voltage. Well the ECU calculates the amout of air based on the voltage. Dud you measured how much volts at idle? But according to my experience 9 is good.

[@TheButiko]

@@DIYTEA not im not measured volts at idle but air flow was between 9-10.5 i have siemens maf

[@DIYTEA]

@@TheButiko It is the same value that I hadt with a siemens OEM MAF. So don't worry, your MAF is doing his job correctly at idle. Try to read the amount of air for different rpms and compare them to my table on the video

[@jessieszygenda1587]

U know all about this maf sensor from your cp it's good, but tell me about this if you don't have a computer lots of people do not know how to use a computer so why don't you show them how it's done with out one, and do the diagnostic on 2003 530i bmw with out it I like to see that

[@DIYTEA]

The idea begind this video is to show why it is recomanded to use OEM parts. What I did using a scan tool was just part of the experiment. To check tge MAF you will need a multimeter, you can check the voltage like I did on the beginning of this video.

[@ruffraff4697]

Just buy one you'll need it

[@AbdulRafay-mq3rg]

Can I use aftermarket maf

[@DIYTEA]

You can, but you have to deal with surprises. Like explained in the Video.

[@AbdulRafay-mq3rg]

@@DIYTEA does it work exactly like the oem One

[@PAPERBOYS-ek6ke]

Good informative video.

[@ukaszteter6283]

This is m54 b22?

[@DIYTEA]

Yes

[@ukaszteter6283]

kg\h measurements from the table were made at a standstill or while driving?

[@DIYTEA]

@@ukaszteter6283 standstill to make it easier getting accurate and equal rpms

[@ukaszteter6283]

At a standstill I have a good result, but when driving there is much more air. It should be ?

[@DIYTEA]

@@ukaszteter6283 yes it should be different,more air. And it depends from the temperature of the air. This is very important fir the ECU to calculate the amount of air