When you say the fluid was clean and now is black, how quickly did that happen? Also, if it is black, it should be serviced to see if that helps. Keep in mind, the pump may have failed.
Take a look through this link and see if anything helps:
Let me know if that helps. Also, before replacing anything, I would suggest trying to service the system.
Here is a link that explains how to service one:
Let me know if either of the links' help. Also, let me know as much as you can that may be helpful.
Wednesday, April 19th, 2023 AT 5:56 PM