Thread: N54 water pump
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      11-20-2012, 09:09 AM   #10
enrita
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Drives: 335i - Big turbos
Join Date: Sep 2008
Location: Italian in Sweden

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easiest way to diagnose is to actuate the water pump with either BT cable or INPA and see if it can hold the requested % . If the pump misses the % by a lot like you request 95% and it only spins 80-85% than you know its gonna fail very soon.
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