If it's not fuel (or fuel pump), it's ignition ... or the more modern nemesis, the computer ... or errant inputs to it from coolant temperature, thottle position, air pressure, air temperature, and crank position sensors.
The solution: wiggle stuff (a technical term.) Something electrical is probably loose and breaking contact, or moving during a left turn only and touching something. i.e. shorting out to an adjacent grounded item.
Think back. What have you (or your dealer) changed/touched recently?
Shazaam!
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