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11-28-2012, 04:53 PM
Join Date: Sep 2011
Location: TEXAS - Circuit of the Americas doing laps with my M5 and coming in for a pit stop.
My Ride: 03 330iT SportWagon
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Check you temp sensor in the lower hose. If you disconnect it when the ac is on, it should cause your fan to go into high speed.
There is no seperate relay. It is all contained in the fan controller attached to the fan itself.
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