How to clean mass flow sensor with MAF cleaner Volvo V 70 DIY
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- Опубліковано 26 сер 2024
- A mass (air) flow sensor (MAF) is used to find out the mass flowrate of air entering a fuel-injected internal combustion engine.
The air mass information is necessary for the engine control unit (ECU) to balance and deliver the correct fuel mass to the engine. Air changes its density as it expands and contracts with temperature and pressure. In automotive applications, air density varies with the ambient temperature, altitude and the use of forced induction, which means that mass flow sensors are more appropriate than volumetric flow sensors for determining the quantity of intake air in each cylinder. (See stoichiometry and ideal gas law.)
There are two common types of mass airflow sensors in use on automotive engines. These are the vane meter and the hot wire. Neither design employs technology that measures air mass directly. However, with additional sensors and inputs, an engine's ECU can determine the mass flowrate of intake air.
Both approaches are used almost exclusively on electronic fuel injection (EFI) engines. Both sensor designs output a 0.0-5.0 volt or a pulse-width modulation (PWM) signal that is proportional to the air mass flow rate, and both sensors have an intake air temperature (IAT) sensor incorporated into their housings for most post OBDII vehicles. Vehicles prior to 1996 could have MAF without an IAT. An example is 1994 Infiniti Q45.
When a MAF sensor is used in conjunction with an oxygen sensor, the engine's air/fuel ratio can be controlled very accurately. The MAF sensor provides the open-loop controller predicted air flow information (the measured air flow) to the ECU, and the oxygen sensor provides closed-loop feedback in order to make minor corrections to the predicted air mass. Also see MAP sensor.
The Volvo V70 is an executive car manufactured and marketed by Volvo Cars from 1996 to 2016 across three generations. The name V70 combines the letter V, standing for versatility, and 70, denoting relative platform size[2] (i.e., a V70 is a larger car than a V40, but smaller than a V90).
The first generation (1996-2000) debuted in November 1996[3][4] as the estate variant of the Volvo S70. Both cars were essentially redesigned Volvo 850s which had itself been available in saloon and estate configurations. The V70 was available as a front and all-wheel drive estate, the latter marketed as the V70 AWD. In 1997, a special AWD version called V70 Cross Country, badged as V70 XC, was presented and went on sale for model year 1998.
The second generation (2000-2007) shared styling by Peter Horbury[5] as well as major mechanical commonality with the Volvo S60 saloon and was based on the P2 platform. With a 4 cm increase in width and height, a 5 cm longer wheelbase, a slightly shorter overall length than its predecessor,[6] and a slightly increased interior cargo volume it went on sale in early 2000.[7] As with its predecessor, the second generation was also offered as an all-wheel drive variant which was marketed as the V70 AWD and as a special version called V70 XC, which for model year 2003 was renamed to XC70 .
The third generation (2007-2016) was based on the Volvo P3 platform, sharing general styling and much of the interior in front of the b-pillar with the second generation Volvo S80. It has been marketed since 2007 as the V70 and the XC70, a crossover model.
Production of the V70 ended on the 25th of April 2016, the XC70 continued until May 2016.
Those are the cleanest mechanic hands I've ever seen.
I`m going to check/clean MAF. All tutorials helpful. Greetings for all Volvo owners.
+casmon71 thanks u so much
The narration is the best part.
Thx
Followed the throttle body clean video as well and did this as well. Sensor covered in gunk and carb spray did the trick in removing. No more cutting out or hunting issues. Great video. Also cleaned the air filter box as full of leaves and insects
Thanks for posting this video- very helpful.
After I cleaned the MAF sensor I received a dtc code for possible vacuum leaks. I did not use the silicone. I’m wondering if that has anything to do with the receiving this code. The car misfires a little. Appreciate any advice on this issue.
Thank you so much for this video, Love the accent too!😊
That makes me happy best regards
pduesp may I ask a question? I have a v70 T5 2001 volvo wagon which just hit 134,000 miles and my check engine light has been on since September 2017. I bought an OBD from Fixd and it gave me two codes one of which involves the Mass Airflow Sensor that you demonstrated in this video. When I opened my hood it did not look anything like your volvo and the two screws were weird ( a zig zag hole in the middle of the screw like an allen wrench could fit but won't unscrew it) I believe the re called tamper resistant? Where do I get these special tools to access the sensor so I can clean it. I need to get my emissions done this week please help😟
Could u make a picture of it and send it to me by google+?
Very nice thank you for this video.
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Thanks, let there be sensor cleaning :)
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that's great will get some cleaner for mine...keep getting warning sign say mixture to rich,,, so think this might be the problem
I wish u all the best
Did it fix your problem?
Hey, where is the barametric pressure sensor/ location on a 2008 s80 Volvo.
Very nice! Thank you for a nice educational video! Rgs/ CJ
Learn more: ua-cam.com/users/PDPPerformance
Hi I too love the deepness and richness of your voice. I think you would make a great storyteller. Anyway I have a Volvo s40 on a 2004 plate but I cannot find the MAF sensor is there anyway of you helping me to Locate it. Thanks in advance.
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Hello ,Would it be the same for a 2007 volvo v70 turbo ,thank you
I have a 04 S60 that stalls a few second after I start it. Will this procedure possibly help?
Try it
Need the same tutorial for a 2009 V50. Any links ?
Ist das deutsche im Hintergrund?? I love this guy's Videos jedenfalls
Ja, sorry
I would probably not spray anything near this sensor and just wipe on some silicon if needed.
There's a shrine nearby
Thx
🤗 if you like more: learn more on ua-cam.com/users/PDPPerformance
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Can you use contact cleaner?
Alternatively yes
Contact cleaner often leaves a slight protective and lubricating residue so I would advice caution. You don't really want that on a heated wire sensor. You are trying to clean off any residue from the wire so you want a cleaner that will evaporate and leave no residue.
Sir can we use petrol for cleaning please reply fast
You can use brake cleaner, too.
which country is this accent from? thanks for the vid!
Germany 🇩🇪
Definitely don't use the silicone spray
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Don`t know why I wrote that. I understand. Just bit funny sometimes. Sry
+casmon71 that makes me happy, best regards.
Thanks for the vid but next time dont have background noise that is so annnoying
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