Actually, the temp shouldn't have that much affect on it. The computer determines how rich the fuel mixture should be. As far as pumping the throttle, in the old days, there was an accelerator pump in the carb. When you pumped the gas, it would spray fuel into the engine. Today's cars are fuel injected, so that really does nothing.
I have two things I would check. First, the fuel pump may be loosing its prime. It should maintain fuel pressure at all times. If it doesn't, it will take a few tries to get it started.
Here is a how to for checking that:
https://www.2carpros.com/how_to/how_to_check_fuel_pressure.htm
What I want you need to pay attention to is how quickly the pressure drops when you turn off the key.
If that is fine, you may have the move to the ambient temp sentor. It tells the computer how coold it is outside and how hot the engine is. If it doesn't know the correct temp, it will mess up the mixture and not know how rich t make the fuel mixure.
Has the check engine light come on?
Wednesday, September 2nd, 2020 AT 6:10 PM
(Merged)