Dip / drop in RPM 2-3 seconds after cold startup

[faz]

Hi everyone,


2017 X5 x35i with 65k miles on it


Has been experiencing a dip in RPM only during the first cold startup of the morning, mostly in colder mornings only. I have a video of the behavior that I posted here:


https://imgur.com/a/65la6na


Occasionally this startup dip in RPM has resulted in engine stalling too (very rarely, perhaps two or three times in the last year , year and a half)


It never shows this dip on subsequent start ups.



Any idea what could be causing this?


Thanks in advance.

[Jason73]

Try cleaning MAF. This helps sometimes