Sudden high rpm at cold start (needle jumped up to 2200)

[Goldeni245]

Hey guys, I started my c230k this morning and the rpms shot up to 2200 for about 2 seconds, and then back to 1200 to warm up and the back to normal idle. Initial start up was louder than usual but there was no shaking, idle hunting or misfire.

It wasn't even that cold, only 59 degrees. Usually it'll only go up to at most 1500. All starts after that were normal. Any ideas what might be causing this? Temp sensor or something with the throttle?

Thank you in advance for reading.

[W202FTW]

Kompressor acts as a secondary air pump. Check ALL intake and vacuum lines for potential leaks, as well as the connector to the air-box throttle body.