Hope one of you can help me indentify where this leak is coming from? 2005 X-type 3.0 sport picture attatched from the bottom.







trickles when car is on and drips when its off. Thanks!

 

Looks to me like it could be the thermostat housing or possibly radiator

 

Sure looks like the thermostat housing, especially with all of the non-stock clamps going on!

 

When it's fixed, better change over to Jaguar spec coolant (it's orange)

 

DennisL, I have to agree with the others that it is looking like it is coming from the thermostat. Granted, if you see where the thermostat T attaches to the block, you might have a leak from there too as there is an o-ring in that joint too. It is not going to be that much more work to replace both of those gaskets than to risk replacing only the one on the thermostat housing and have the leak continue.

 

thank you for the replies guys. So it appears the consensus agrees it's the thermostat. You all helped me successfully diagnose, troubleshoot, and replace an O2 sensor last time. Thank you for that as well. Just need to find a good DIY video or instruction somewhere for this repair so I don't screw anything up! :-) I'm assuming I would access it by removing the battery as opposed to underneath?

 

Thermo do you have part numbers for those parts? I have a nice sized gift card on eBay I'd like to put to good use. thanks

 

edit, found my leak, was the coolant pump shaft leaking.

 

Dennis, here is what I have found and these are the lowest prices I can find:

Water pump: Stant 48788 Thermostat with Housing | eBay

May want to check with them to make sure that comes with a gasket. I do not see where it lists that it does.

Thermostat gasket: Engine Coolant Thermostat Housing Gasket FEL Pro 35742 | eBay

Thermostat T-housing gasket: Thermostat Gasket Fits 2002 2008 Jaguar x Type | eBay

Should you decide to replace the gasket on the T-housing connecting the thermostat to the engine block. Not necessary to replace this, but if you are that far into it, wouldn't be a bad thing to change to garantee you don't have a leak somewhere else.

 

Dennis: Early August I purchased a $24 water pump including S&H from this eBay seller, and am pleased it has a metal impeller:

Engine Water Coolant Pump for Contour Escape Taurus MPV Cougar Sable x Type | eBay

 

thanks for the replies guys. Sorry I haven't responded til now.. had a baby and things have been hectic. I've ordered the thermostat after studying the underside of my car for a little while. I can definitely see coolant leaking from there both from above and below. I went ahead and ordered the part. I do have two questions though: 1. what's the easiest way to drain the coolant and 2. from below it looks like a very easy swap out. It appears I'll have to reach around the O2 sensor but there's only 3 bolts I'll have to remove it. There's gotta be a catch. Do I just unscrew these, remove and swap w/ new thermostat and gasket or will there be additional things I'll have to remove. Thanks

 

Dennis, if you look on the passenger side (your right side if you are under the car looking at the thermostat), you will see a cutout there. If you look inside there, you will see the bottom corner of the radiator. If you look closer, you will see a phillips head there on a plastic piece. Insert a large phillips screw driver into that and back it out a few turns. The coolant will start to flow. Just have a few catch tubs ready as I have found that the coolant likes to land on the plastic under-shield and run who knows where. You can somewhat help control things by simply jacking up the rear drivers side to make the passenger front the low point. Just make sure to remove the cap off the overflow bottle or it will take forever for the fluid to drain out.

As for pulling the thermostat, you pretty much have it. The "hard part" is simply removing the radiator hose on the bottom and getting it out of the way. But, that isn't all that difficult. Probably a good idea to replace that if you have lots of miles on the car. You will be one clamp away.

On a side note, you may want to put a cap over the open end of the lower coolant hose. But, when you are removing the bolts from the thermostat, for some reason, they like to jump into that opening and they are a PITA to get out at that point. Not that I know first hand, LMAO.

 

Thanks for the help as always Thermo. I'll report back after it's done

 

I'm not 100% sue on this motor but on many the thermostat will fit ether direction. But it will only work one way. Pay close attention when you remove the old one as to how it is facing and make sure the new one goes in the same way.

I hate having to do it two times ...

 

Good advice. Fortunately the petrol engine thermostats can't be installed upside down.

This thread has a video of the thermostat & housing removed from the engine block, start watching at the ~5 minute mark: https://www.jaguarforums.com/forum/x...e2/#post845737

Here's a video of the thermostats, good & bad: