Hi guys, What is the purpose of the Air Flow Sensor. I heard it's quite expensive and one may cry if it goes bonkers!! Where is the location of this sensor??

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It is mouted on your air intake pipe about next to your distributer cap.

how would one know if this gets faulty?

I found out on the internet how this sensor works and what's its purpose and everything. Is it true that it costs a lot of money??!

I wouldn't say a lot - rather a sh*t load ...

[color=blue]Air flow sensor for a 1500 (don't know your engine size) is in the region of £702, including VAT, not sure what your tax situation is in Malta, but without VAT its £598.50 [/color]

Mine is 1500cc. In Malta VAT is 15%. Can these things get fixed though, instead of replaced?

nope, i think they are a bit tricky to fix. your best bet is finding sum1 braking a car on ebay or finding one at a scrap yard.

Arty

What exactly is wrong with your car that leads you to consider a new MAS ??? I've seen it a few time; people aren't sure what is wrong, so they say "Oohh - must be the MAS meter ?????". Frequently it turns out to be something else ...

Wothing wrong actually. but i discovered that in 4 years the previous owner never replaced the air filter so i was worrying that it would mean the EOL of the sensor might be even closer than usual.

I'm only considering possibilities in case of such an eventuality.

An old air filter would just get clogged up and let less stuff through, so that shouldn't have affected the MAS.

Mark