A cold-start stall on a TANK 300 usually points to fuel, air, or sensor trouble that winter makes worse.
Check the battery, throttle body, and live sensor data first, and do not keep driving if it repeats.
Start With the Basics, Not Guesswork
If your TANK 300 fires up and then immediately dies on a cold winter morning, you are right to pay attention. A cold engine needs a rich-enough fuel mixture, a clean idle air path, strong spark, and good battery voltage. Winter exposes weak points: a battery that cranks slowly, a throttle body coated with carbon, a contaminated mass airflow sensor, or a low-pressure fuel supply can all make the first few seconds of running unstable. Before replacing parts, have the vehicle scanned for stored and pending codes, then look at live data such as coolant temperature, intake air temperature, fuel trims, MAF or MAP readings, and battery voltage during cranking.
