Thread: Bad water pump?
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Old 11-17-2012, 11:21 AM
maggasp maggasp is offline
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Location: Nashville
Join Date: Sep 2011
Posts: 20
Mein Auto: E61 535 XiT
Bad water pump?

Yesterday my '08 535 overheated (40k mi). First I noticed that there was no heat through air vents, then the radiator fan turned on very high, then the overheat.

I've read a bunch about replacing the thermostat and water pump together, but I'm just trying to diagnose whether the pump is bad and I need to spend the $400 on that part.

I initiated the water pump bleed procedure, and the pump turns on and circulates some coolant, but it sounds very weak to me.

Please take a listen/look at my video and let me know if you think if the pump is working properly.

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