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Is it normal for a 2009 civic si to idle hi when you start it up?
Wiki User
∙ 15y ago
I am a certified aircraft powerplant technician, and owner of a 2006 Honda Civic Si. As with all internal combustion engines, it is considered normal for an engine to idle "high" during a cold start up. During this period, the oil is coming up to optimal temperatures, coolant is beginning to flow through the crank case, etc. In my personal experience with my Si, my vehicle will idle at about 1500 RPM for a good minute before it begins to drop to a normal (engine warm) idle speed of 800 RPM. However, if you are experiencing idle speeds in excess of 2500+ RPMs during a cold start, or your vehicle demonstrates this high idle when your engine has been running for over 5 minutes, you may want to take your vehicle in to be examined.
Wiki User
∙ 15y ago
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