As with a lot of automotive maladies, there are a number of potential causes as to why a car stalls in cold weather. Many have to do with the fact that a richer fuel mixture is required when an engine is cold, and even more so when it’s cold outside.
“Richer” means the vehicle needs more fuel, so anything that limits fuel flow may first show up when the engine has just been started during cold weather.
The primary causes of improper fuel delivery in cold weather include a sensor that is feeding the computer inaccurate information; a clogged fuel filter, clogged fuel injector or weak fuel pump that’s reducing fuel delivery; or water in the gas.
