Fiesta ST150 MAF

[LuS1fer]

I suspect my MAF is playing up - it was a little slow to lose revs last year so I cleaned it.

Now, the other day, I was topping the washer fluid (ignition off) and realised the MAF was still whirring (it stops eventually because I have no battery issues)Disconnecting it and reconnecting it stopped it.

I dare say it is not meant to do that but is this a case of just having to bite the bullet and change the MAF?