E39 auxiliary water pump

[Btwoshay]

Alright so I filled my system till both bleeder screws had water leaking out. I screwed them back on losely and turned on the heater. This whole bleeding system is new to me but I hear after you turn the heater controls to high then the auxiliary pump will start to push water through the heater core so you can further bleed the system only for me when I turn the car on I hear a buzz under the intake and I get no response from the auxiliary pump on the bottom right side of the radiator. Because of this I can’t bleed the system entirely. What do you think should be my course of action. I don’t know where to check for the relay and fuse for this item.

[Btwoshay]

Alright so I filled my system till both bleeder screws had water leaking out. I screwed them back on losely and turned on the heater. This whole bleeding system is new to me but I hear after you turn the heater controls to high then the auxiliary pump will start to push water through the heater core so you can further bleed the system only for me when I turn the car on I hear a buzz under the intake and I get no response from the auxiliary pump on the bottom right side of the radiator. Because of this I can’t bleed the system entirely. What do you think should be my course of action. I don’t know where to check for the relay and fuse for this item.

[shogun]

2 threads merged and moved to E39 forum. Are you really asking for E39 info, as your profile says E30?

[geargrinder]

2 threads merged and moved to E39 forum. Are you really asking for E39 info, as your profile says E30?

He's actually running his discussion here too:

https://www.bimmerforums.com/forum/s...-coolant-bleed