Q: Poor starting when cold

When the car is cold, it relies heavily on the engine coolant temperature sensor. If the coolant level is low, the coolant temperature sensor can send false information to the computer, causing a hard start or cold start poor running condition. If you have access to a scanner, you may try hooking this up to watch the coolant temperature. For example if the coolant temperature is 30 degrees, but the coolant temperature sensor reads that it is 100 degrees, this will cause the computer to not activate the proper enrichment to the engine at the right time upon start up. This is a common issue when it comes to vehicles starting in colder temperatures. For more information, I have linked an article which discuses starting a car in cold weather.