My 2001 S60 2.4T is very sluggish in the morning. Almost feels like it's misfiring. If I'm parked and try to hold the RPM above idle I can hear and feel the motor pulsating. Once it warms up it seems to be fine. Although I don't think I have the same power I used to.

No CEL. New plugs installed last summer.

Any ideas what I can check?

 

Did you ever resolve this issue? Mine's been doing it for months.