wierd starting issue

[leeaspin]

So when I start my car when its cold or after i let it sit for a couple hours (mid warm) it starts and has the hardest time keeping running. It sounds like my car has the most insane cams and only revs to about 450-500 rpm...then after a couple seconds like that it gains the rpm and runs normal. Anybody have any ideas why its doing this?

[leeaspin]

http://www.youtube.com/watch?v=59kCpGcPtAE

[CelicaKidd_205]

Could be an Intake Air Temp sensor, or Coolant Temp sensor gone bad causing a rich initial startup. Once it starts and the ECM sees the low idle it will bump the Idle Control Valve up to a cold start rpm range until the O2 goes into closed loop.

[TyrelLee]

Mine does same thing. Any other signs to single them out?