[JediWill89]

Hello everyone,

I am experiencing some unusual issues with my water pump and am trying to determine whether it is an electrical problem or a faulty water pump that I may have purchased.

Recently, I replaced both my water pump and thermostat after the OEM water pump failed and required replacement.

Since the repair and replacement, I have been experiencing intermittent issues and am uncertain about the cause.

This morning, while monitoring the water pump and car temperature using Bimmergeeks Protools, I noticed that the water pump failed to kick in. Although the thermostat opened without any problem, the water pump amps remained at 0amp. I decided to turn off the car and restart it, and the water pump kicked in with 1amp and began to spin. Additionally, I observed that the BSD would drop from 99% to 77% in a brief moment.

This problem has occurred intermittently, once a week ago, and twice this week.

Yesterday, I received a low coolant level warning light and promptly topped it off, which resolved the warning.

I have attached a datalog for reference and would appreciate any ideas or suggestions on the cause of this issue.

Thanks!

[NZE90]

What brand water pump did you use?