High idel

I recently bought a 02 prerunner with 2.7 and when I put it in park it idels at 2 grand which seems pretty high anyone think it's the idel air control valve ?

 

Do you have an MIL on? Few likely culprits, one which you mention is the IAC.

Also, do you know the maintenance history? What's been replaced or fixed or maintained, etc.

 

No check engine light and don't really know maintenance history I'm going to get some one to hook up a code reader when fixed right now it's siting because it need timing chain so it'll be about a week till fix just trying to find the odds and ends