It depends on engine temp and dme controlled.
Bmw electric water pump test.
Followup from the pelican staff.
Hi i have bmw x5 3 0 2007 i changed my electric water pump and thermostat as well at my garage everything was done when we did the scanner for the car after the repair the water pump speed is 150 1 minute is that normal or what.
How the mode of failure with this pump appears to be simple age and miles likely exasperated by a lack of coolant changes.
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Disassembly of the front cover and removal of the water pump allowed for inspection of the pump.
This bmw 540 has was diagnosed with a defective engine coolant pump.