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Q: My car has a hard time starting. Its called a Hard start i believe. on 2004 BMW 330i

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The engine cranks and eventually starts but it takes time. This only occurs if it has not been used for hours, because it will start normally after just being driven. After starting the idle is erratic for about a minute before it catches to where it should be. The car drives fine after that. There was one instance in which the Transmission light came on also on a very cold morning and it rode horribly when i slowed down. This only happened once and since then it has not happened again. I have heard so many things that it might be. MAF, crankshaft sensor, fuel pressure, battery, etc....Anybody experience similar problems?
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