sup guys it's been awhile i just picked up a 93 dx 5sp its got 240k on it d15b7 well it runs fine no problems except when i start it, the car revs from 1.5k to 2k like a heart beat for like 15 seconds to a minute then it idles 2k then slowly drop to 1k any thoughts?

 

It's warming up

 

I would believe that however it'll do that for like 5minutes ill drive it around for at least a hour and a half then stop driving it for like 10 minutes and then it still does that! So why would it warm up if it's already warmed up? I'm lost.

 

clean your FITV and IACV