Q: Trouble starting when the engine warms up, humming noise
When I try to start the car in the morning after it sat for the night and the engine is cold, it starts immediately and runs great. However, after the engine is warmed up, it develops starting problems. If I drive it and park it for a short while and attempt to start it again, it would take me about half an hour to restart the car. When I continue driving, it would make humming sounds as well. Moreover, the dashboard keeps showing the service engine soon warning on and off. The battery checks out fine. What is causing this?
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