2019 6.2L Stumble When Cold?

[relevante]

My 2019 6.2L will sometimes have a brief stumble when it’s cold. The first few times I thought it might have been traction control kicking in when pulling out onto slick roads but it happened today when it was idling after remote starting it. RPMs just fell for a moment, and then it took back off and was fine the rest of the day. Runs perfectly otherwise.

 

Don't ever recall this happening prior to the past two months or so. It’s happened maybe 5-10 times since then.

 

Any thoughts? No CEL and no codes when I checked the other day.

 

Only specific thought I’ve had is maybe a fuel filter? AI suggests a MAF sensor cleaning which seems maybe reasonable?

Edited February 24 by relevante

[silveradosid]

how many miles on it, cleaning the throttle body might fix it

[relevante]

5 minutes ago, silveradosid said:

how many miles on it, cleaning the throttle body might fix it

95k. I’ll give that a shot. Thanks.

[relevante]

It was definitely a little gummed up. Time will tell if the stumble happens again, but it sure does seem to be idling smoother now. The first time I pulled up to a stop sign I thought it quit running. Thanks for the tip.

 

 

[mjm-1957]

Its a rod bearing starting to spin. Nothing out of the ordinary.