IAC Clean or Replace?

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I have a 2000 MPI B3 with a hard starting issue.  Have been reading that the IAC is most likely the culprit .

Will cleaning the spring plunger with carb cleaner fix it or it a replace item??     

Ramker

I would just replace them and the little filter in the throttle body too.  $80 a piece at Michigan Motorz.

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Where is the little filter exactly?