Another coolant leak, coolant leaks seem like a weekly assignment with this car....

Anyone have a 2005 XJR coolant hose diagram?

I think the leak is coming from the egr valve or possibly a hose behind or around it, definently one in the back of engine.

 

Here is the workshop manual. It is in here https://drive.google.com/file/d/1ajk...w?usp=drivesdk

 

And another easier to navigate version. https://drive.google.com/file/d/1X0J...w?usp=drivesdk

 

EGR valley hoses NON S/C - Jaguar Forums - Jaguar Enthusiasts Forum - Courtesy Michael Hamilton.

If the leak is coming from the back of the engine, it may well be from the dreaded 'Valley Hose' that comes out under the inlet manifold, does a 180 degree turn then goes up, out and round to the throttle body?

 

See the second post of this thread, I give page numbers for the cooling diagrams: https://www.jaguarforums.com/forum/x...iagram-242926/

At this age, all of the hoses are probably due for a refresh. Dye and black lights can help spot the leaks. Replacements for all hoses should be available (note the HVAC coolant lines are sold as an assembly = $$) except for the supercharger coolant heat exchanger to supercharger pump hose... this 270 degree hose has gone extinct.

 

Thanks all for the diagrams and advice! I found the culprit, does anyone know what this is called? It was rear of engine.

 

That appears to be the HVAC pipes with rear climate control, which for my 2005 Super V8 was part number C2C22214. This, unfortunately, is sold as an assembly and runs > $200 -- it appears that one of the plastic Y splitters has cracked and while you could splice in a new Y splitter with new aftermarket hoses, from the look of the hose in that picture and the significant ballooning of the rubber the entire assembly might be worth replacing. If you do get the new assembly and you find yourself wondering how to remove the bolt holding the front of the assembly to the passenger side wall of the engine bay, don't try to get at it from above. A small ratcheting wrench in one had dropped down in front of the engine under the cylinder head and then brought straight back to the securing nut does the trick. Be prepared for various scratches and nicks, but the replacement of the assembly isn't too bad.

Here's a picture of my HVAC pipes removed from the car.