Hi
I've had the car 4 years or so, this is the first winter that I've noticed when my Automatic 2014 Infiniti Q60 S (54,000 miles) is driving at about 30 mph, it sounds and drives rough. The best way i can describe it, is if it's not getting enough gas for the gear that is automatically selected.
Cruising at 30mph the RPM is low, around 1000 rpm. If I accelerate to get out of that gear, the issue is gone. If i use the paddle shifters and control the gears myself, i cannot reproduce the issue. It's almost as if the automatic gear shifting is putting it into too high of a gear for that speed. There is no issue at idle either. On the rare days it's warmer, there's no issue. If related, I did clean the throttle body a couple years ago using TB cleaner, which resolved and issue of the car dying in idle a few times.

Could i ask for some technical advice? I'm limited to 30mph due to a speed camera and the car is in fantastic condition.

 

Maybe leave your battery disconnected for 30+ minutes for the TCM to relearn shift patterns? Have you checked your engine air filters?

 

Thanks for the reply. Unfortunately, the problem continues.
I disconnected the battery for 2 days, and also test drove without both filters installed. No difference.