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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 : 1828 Replies : 12Users Viewing This Thread : |
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Jun 23rd, 2021, 15:11 | #1 |
New Member
Last Online: Apr 11th, 2022 13:29
Join Date: Oct 2019
Location: Exeter
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Mass Air Flow Sensor
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 |
Jun 23rd, 2021, 15:51 | #2 |
Experienced Member
Last Online: Today 15:07
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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Jun 24th, 2021, 08:20 | #3 |
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Last Online: Apr 11th, 2022 13:29
Join Date: Oct 2019
Location: Exeter
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Air Flow Sensor
I got the tip from Scotty Kilmer of Youtube. Are you correct it glows hot when engine is off?
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Jun 24th, 2021, 10:42 | #4 |
Experienced Member
Last Online: Today 15:07
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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Jun 28th, 2021, 11:03 | #5 |
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Last Online: Jan 19th, 2024 17:39
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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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Jun 28th, 2021, 14:44 | #6 | |
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Last Online: Today 15:07
Join Date: Jun 2007
Location: L/H side
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Quote:
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Aug 31st, 2022, 15:39 | #7 |
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Last Online: Sep 1st, 2022 11:45
Join Date: Aug 2022
Location: Shepperton
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Spare MAF
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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