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Old 02-07-2013, 11:17 PM
isaac540 isaac540 is offline
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Location: Nashville, TN
Join Date: Aug 2012
Posts: 36
Mein Auto: 1997 540i
That's normal for when the A/C is off. Turning the A/C on will boost it to around 650. Unless your engine is idling rough or anything else unusual, this shouldn't be a problem.
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