I am in the process of renewing the valley hoses and associated back end heater hoses on my wife's 2001 XKR. I will be checking/renewing the aux water pumps brushes also. My question concerns the water valve, we had no known heating problems but I do not want to do this again! Is there a high failure rate on these and is there a way to test their function?

Thanks for all the wisdom this forum has imparted in my quest to keep her Jag running.

Mike K

 

Not sure how common it is but mine went and was replaced. My test was the heat stopped blowing hot. Dealer diagnosed and repaired.

Best.