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S40 / V40 '96-'04 General Forum for the Volvo S40 and V40 (Classic) Series from 1995-2004. |
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Mass Air Flow SensorViews : 1866 Replies : 12Users Viewing This Thread : |
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#1 |
New Member
Last Online: Apr 11th, 2022 13:29
Join Date: Oct 2019
Location: Exeter
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Just to let folks know. I removed my Mass Air Flow Sensor from my V40 2002
Cleaned the sensor with special cleaner off Ebay and refitted the vehicle runs even better. I do this every time I carry out an oil change every 5k miles |
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#2 |
Experienced Member
Last Online: Today 00:03
Join Date: Jun 2007
Location: L/H side
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How does it get " Dirty" ? Its fed with clean filtered air .... and is cleaned every time you turn off the ignition ( It glows white hot ) Be very wary of doing anything with your £300+ Air mass meter i have seen them ruined by doing this .
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#3 |
New Member
Last Online: Apr 11th, 2022 13:29
Join Date: Oct 2019
Location: Exeter
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I got the tip from Scotty Kilmer of Youtube. Are you correct it glows hot when engine is off?
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#4 |
Experienced Member
Last Online: Today 00:03
Join Date: Jun 2007
Location: L/H side
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Yes on the ones up to around 1991 with the wire filament the later are solid state but still with a hot surface ...
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#5 |
New Member
Last Online: Jun 7th, 2024 17:21
Join Date: Sep 2020
Location: Aylesbury
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I've cleaned many a grubby MAF in this way on Volvos and other cars, never had a problem and it's always improved the behaviour. The air being drawn past the wires isn't perfectly clean as the relatively cheap and crude filter used don't 100% scrub the air. Nor is the unit hermetically sealed. After thousands of hours there will always be unwanted particles in there affecting the performance.
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#6 | |
Experienced Member
Last Online: Today 00:03
Join Date: Jun 2007
Location: L/H side
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#7 |
New Member
Last Online: Sep 1st, 2022 11:45
Join Date: Aug 2022
Location: Shepperton
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Hi, I have a new, unused Air Flow Mass Meter part ref 0280218045 if anyone is interested. A small payment that I can give to charity would be nice but its free to collect if you email me.
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