How do I fix my car.........?

-For some reason my car doesnt start when it is getting baked by the sun however when its in the shade or its night time it will start. whats up with that?one of two things with the limited details that you gave. one the battery is over heated and there is not enough power to crank the engine over like that. if it is cranking and it still will not start then you could have an issue with vapor lock. it can happen on an efi engine also.What car? Which car? Is it a rubber ducky? Is it named after a sneeze? Does it come with an engine? Is some assembly required? Does it take AA batteries?



Well, from the lack of specific information ties our hands to generic answers like fuel pressure and vapor lock. I will make a crazy leap and say you have a pre-1998 honda. A bad main EFI relay has been known to malfunction in direct sunlight conditions, causing low voltage to the fuel pump due to weak conductivity across the contacts, making either a hard start or no start condition when the cabin temperatures get too high.



Without the year, make, model, and engine size, you are on your own with random guesses.