Bosch MAF proper cleaning pt. 1

How to properly clean Bosch MAF.

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Education

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• inżynieria

[medicbr549]

Guys, this IS a vw Bosch MAF sensor and he IS cleaning it correctly. Light brushing and electrial connector cleaner is the proper way to clean this item. I've been a VW mechanic for 38 year's and I have done the same thing many many times. This procedure works on ALL MAF sensors! Remember, air blows across the fine wires and tells the computer that a specific vol. of air is available. A volt/ohms check before and after will tell you if you made a difference. 2 Screws,pop it out and clean it! ;

[meszrum]

@medicbr549

exactly, this is the infamous VAG maf made by Bosch [or lmm for those who live in Germany]. I've been cleaning it this way for 10 years with great effects [after cleaning it shows correct air flow values in 008 measure blocks under VAG/VAS/VCDS].

it's sitting in my dad's car and I do clean it every 30-60 days. no DTCs ever emerged after cleaning.

[lwowskij]

It's ****ing air temp resistor you are spraying. it has nothing to do with the MAF circuit under the plastic cover

[meszrum]

yeah, that's true - it has nothin' to do with the circuit. why would it have to? that's not the cause of reduced measurement.

air temperature resistor plays big part in calculating air mass flow, especially in that particular MAF model [used in 2.5 V6 TDI engines]. this particular way of cleaning let the MAF to maintain the read value of app. 750 mg/R at the full throttle on 3rd gear in the useful range of rpm for more than 3 months after the engine is equipped with this MAF.

[HunterCO1]

@meszrum just acept the fact you have no fucking clue what you doing you clearly proved that!

[meszrum]

@HunterCO1

well, it's good that there are lots of guys that have the clue, isn't it?

I've been doing it for two fuckin' years with this particular MAF and evethin' is fine. I do always diagnose it via VCDS after the procedure and it always measures correct air mass [no DTC].

[rosidus]

and this my friends is how you destroy your cars sensor..

[locoderemate]

does any one knows the specs of the diode he is cleaning? i have a couple of MAF but they miss the diode. A new MAF is more than 100 bucks. A new diode is only 3 bucks. Thanks

[195mkr]

@lwowskij The mesuring is done by the hot wire wen air passes by the wire cools it and the difenrence in temperare and resistence tells the computer what is the amout or air that is coming in.... Thats what Bosh manual says... So cleaning the hot wire is in fact cleaning the MAF! MAF = Mass Air Flow "Sensor"

Regards

[medicbr549]

@Iam18yearsolddddd

YOU ARE WRONG..... the wires are outside so the air can contact it as it blows by. The video is correct!

[Alchemist37]

This video is totally misleading as per other comments this PART is the air intake temp sensor NOT the MAF sensor which is actually inside the air sample tube and CANNOT/MUST NOT be "cleaned" sprayed with contact cleaner and especially NOT subjected to compressed air which will destroy it instantly !!!!!