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Is there summat I should know about MAF sensors? |
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Charlie Dog 
Yardie 
Joined: 07 Aug 19 Status: Offline Points: 304 |
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 Topic: Is there summat I should know about MAF sensors?Posted: 01 Dec 19 at 14:54 |
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The sensor on our T5 is held in
with anti-tamper screws. Haynes simply says it's a delicate bit of kit. Aren't all sensors? So, why have VW used anti-tamper screws please? |
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T5 TDI
Vanorak 
Joined: 05 Nov 05 Status: Offline Points: 3687 |
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Posted: 01 Dec 19 at 15:50 |
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I think most modern airflow sensors use a film instead of a wire and the film is delicate and can be wrecked by cleaning especially with some chemicals (although most people seem to ignore this.) VW probably would rather owners left it alone hence the screws.
A hot wire sensor or a hot film sensor works by the cooling passage of the airflow changing the conductivity across the sensor. The ECU compares this with a reference voltage to decide how much air is passing the sensor.
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2004 2.5 174
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Charlie Dog
Yardie
Joined: 07 Aug 19 Status: Offline Points: 304 |
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Posted: 06 Dec 19 at 20:41 |
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Thank yuo very much T5 TDI :o)
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