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2006 taurus when starting it,the idle higher for like a minute then goes down is that normal
 

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2006 taurus when starting it,the idle higher for like a minute then goes down is that normal
Yes. Colder it is, higher that initial idle will be but always needed for the engine to settle into it's home idle speed. During the first 5 seconds, the Alt is not up to full charging, and the A/C should not engage so the engine can settle in. My '05 takes about about half mile of local driving.
-chart-
 

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That is some what normal. If it has an aftermarket idle control valve sometimes it is more pronounced. To post the idle RPMs would be helpful.
 
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