Hey did you figure out if it was the water pump? or was it the auxiliary coolant pump? please let me know i have similar issue.

 

I had the same issue after replacing my water pump. Mine is a 2013 3.0 and the pump went out at 45k. After replacing my pump, I had a worse leak than before. I found that I had pinched the O ring between the pump and the plastic tube on the back side which leads to the engine oil cooler. I initially put the O ring inside the female end of the water pump and slid it on the tube. After buying a new O ring, I put it on the male end of the plastic tube and pushed it up all the way to the lip and slid the wp over the tube/O ring. This worked. I highly recommend buying 2 or 3 new O rings and replacing both on the plastic tube ends. I was surprised to see how deformed they got over time. I thought I bought the wrong part as the new O ring has a prominent ridge on it, but the old ones were so smashed over time you couldn't see the ridge any more.

 

Ok thanks ill try that, also where did you buy the new o rings? do you have a part number or link? that would really help. Thanks

 

I bought it from the dealership. Part number is

AJ811539

Here's a link showing location and option to buy: Tube Seal

 

Ok thank you, and how many of these o rings do i need to replace? how many of them are there?

 

There are 2. One on each end of the plastic tube. Pull the plastic tube off the engine oil cooler and replace the oring on the male end of the metal oil cooler line, then replace the oring on the male end of the plastic tube that slips into the back of the water pump. Seat both orings all the way up against the stop on the male ends and lube the orings so you don't tear or streach them when you assemble it back together. In the attached pic, 5 is the plastic tube, 6 and 2 are your orings (same part number from above). 1 is you engine oil cooler that is located in the valley of the V on your engine. 6 is the side that will slide into the back of the water pump.

 

Update, i replaced the water-pump today and all the seals including the one on the tube behind it, it is still leaking the same under engine, still cant figure out for sure what it is. After reading online it might be the auxiliary inter cooler pump but i cant seem to find where its located. Any recommendations? anything will help.

 

Sorry it didn't work out for you. See #6 for the intercooler aux pump in the link. Intercooler Parts

 

Yea no worries thanks for trying, but i still cant locate the aux pump under the hood, any tips on where to look to find it

 

How do I get to that post by bigwill

 

looks like you found it. here is a link to it just in case

https://www.jaguarforums.com/forum/x...ssover-187802/

 

I will be starting a thread on how to do a head gasket replacement. No small undertaking !!!

I was spraying on a fun run last Sunday and blew the right bank head gasket. Its going to be interesting.