Hi - First timer here - I have a 2004 Vanden Plas. I had the false alarm coolant sensor and last time it was for real and I kind of ignored it until I saw the steam (bad idea) hope I didn't damage engine before it shut itself down). I found the problem - a broken fitting on a part I can't seem to ID. The local Jag dealer is pretty non-responsive so I was hoping someone here might know what part I am dealing with - here is a far and near picture of the broken fitting and hose that belongs there but is pulled off to the left of the hole. Half of the metal 'nipple' fitting is inside the hose - the other half is still on the part. The orange crud is from the radiator coolant spilling out and burning on.

close-up

engine cover off

 

The part that failed appears to be the water outlet. The JLR part number is AJ811793. The plastic cooling system components can only withstand a finite number of cold to hot to cold cycles before failing.

The water outlet on the AJ33/AJ34 is a known failure point and should be replaced each time the coolant is replaced.

 

Another common cooling system component failure are the two feed hoses to the EGR valve. The valve is just above the water outlet with one of the hoses running under the inlet manifold.

 

Thank you for the quick replies. I'll mention this to the Jag dealer here in KC and see what I'm up against.

 

Welcome aboard.

 

Welcome to the forums bbenton001,

JLR are showing Out of Stock on this item so your dealer may not be able to help.






I did find a new one listed on ebay:
https://www.ebay.com/p/1511220339

Follow this link https://www.jaguarforums.com/forum/x...-x350-x358-28/ to the X350 forum for help, advice and information. The 'HOW TO' thread at the top is a good place to start for information on regular issues. You can also use the US Midwest Region forum by following this link https://www.jaguarforums.com/forum/us-midwest-39/ to find other members in your region.

Please read the guidance for new members ( https://www.jaguarforums.com/forum/n...ned-up-241802/ ) which answers many of the most frequent questions about getting started.

Enjoy the forums.

Graham

 

Welcome to Jaguar Forums bbenton001,

Good to have you with us.
Enjoy the forum.

If you haven't done so already you should add your car details to your signature to help others to help you.
If you need help with getting around and using the forum follow this link for some help Forum Help

 

Welcome to the Forums.

 

Hello,
Welcome to the forums from ElinorB.
(';')

 

Hi again - When I look at the actual pictures from the ebay link below (thanks) or the replacement water outlet pipe on partsgeek (link below), I can't quite match it up to mine perhaps because I can't see everything when it's installed, but I took another pic overhead of the broken part so you can see where it is located just to be sure my earlier pictures were not telling the whole story - it's the brown dappled part and connects to both of the large radiator hoses (the broken fitting is on the left and radiator just out of view at the bottom). Thanks again or all your kind assistance.

Picture of my part

ebay

partsgeek link with picture (could not xopy picture there)

Coolant Water Outlet Housing Kit - 2001-2005 Jaguar Vanden Plas - Four Seasons 568-05921459

2001-2005 Jaguar Vanden Plas Thermostat Housing - Four Seasons 86045 - - PartsGeek.com

Thanks again! Brad

 

welcome to the forum - enjoy!!!

 

@bbenton001, the water outlet shown in the photo is correct.

There are eight Torx bolts securing the water outlet to the cylinder block and heads. The water outlet also contains a new thermostat and coolant temperature sensor.

Here is a link to the X350 Workshop Manual:

https://www.dropbox.com/s/xl1qtf4hwt...anual.pdf?dl=0

 

Welcome to the forums.