Hey all,

So my dad's Jaguar has been suffering with cooling system issues recently; it all began be a tube working its way out from the expansion tank, which my dad plugged back in and everything seemed normal on his trip to work the next day. However, when he drove the Jag back home, it got close to overheating that he had to pull over twice.

It was at this point that we decides to overhaul the entire coolant system, and to be sure that we have the right part, we'd love to have inputs if the part selected are correct.

Radiator Top Hose: C2C22265
Radiator Bottom Hose: C2C9778
Tube-plenum (bottom hose of expansion tank): C2C24567
Vent pipe (top pipe of expansion tank): C2C3507
Water pump, expansion tank, and thermostat will be sourced from RockAuto.

Thank you!

 

I can't help with this myself, but to make it easier for others to assist it might be a good idea to clarify whether you're talking about the car in your signature or if your dad has a different car.

 

It's the car in the signature, which is my dad's car as well.

 

Consider changing the failure prone DCCV when you have everything apart. Also add the heater hoses that attach to the DCCV. You also have an under manifold hose that should be changed now too.
Here are a number of threads on that. There are a ton of posts so save yourself a LOT of grief by reading what others have run into.
Under Manifold Hose Replacement

Do you have the shop manual? If not it's free to download from the stickies. These are at the top of the forum and are always at the top for quick reference.
It will be required! Note that Jaguar calls the shop manual the JTIS and the parts manual is called JEPC. Again both are free on this forum and do take a bit of work to install and get working.

But compared to trying to use a dealer you will save thousands of dollars. Also be aware many dealers just won't work on anything over 10 years old anymore. Strange but true!

Here is a quick search that has 22 threads. Lot's of great information in them. Your doing this right just do a bit more research so you don't end up going back in to do more repairs later!
Change the DCCV

These cars do have a somewhat complicated cooling system but all this can be done by a DIY guy if you take some time and get educated. Remember these are now old cars and all the problems have long since been found and repaired.

I only use a vacuum coolant filler anymore. Works way better and no more time spent burping the system and trying to get all the air bubbles out. It just plain works! One and done. I wish I had purchased this years ago but did not think I needed it. Well one use was all it took! You won't go back to anything else after using a vacuum filler. They are pretty reasonable these days and there are many on the market.

Lastly the car uses plain old Dex-Cool so ignore all the "special" Jaguar coolants. Dex-Cool is available anywhere.
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You're missing a few hoses in your list, but you probably can't even see them unless you've started the tear-down. My own thread on my own experience, which began with a cracked radiator pipe: Clicky thing

I never did find the correct hose for the bottom of the expansion tank on my '07, so I reused it. I mean, I found the right part, I just never found one available. (By the way, they call it a "coolant drain hose" in the parts lists.) I haven't replaced my thermostat yet but I have a new one on hand, as after my work, I get the occasional P0128, which means the coolant temperature is not coming up as quickly as expected. According to the forum's collective wisdom, this happens when the thermostat's rubber gasket breaks down and jams it up, causing it to stick open. I have notice on road trips on very cold days that the temp needle doesn't reach its usual exactly halfway point, also indicating a stuck open thermostat.

I almost decided against the under-plenum hose, as the intake manifold was more difficult to remove than I expected initially. There are two electrical connectors on the back of the manifold that CANNOT be accessed while it's bolted down. You have to unbolt it, then pull it forward as far as you can. Searching for replacement gaskets, most of the hits will be the small gaskets between the upper and lower manifolds, which you don't need. You need the gaskets under the lower one. Be sure you get the metal gaskets, that have the little tabs that hold the gasket in place, and not the cheap-*** cardboard gaskets everyone seems to offer, as you will never in a million years keep those cardboard gasket lined up when you reinstall the manifold. Anyway, that under-plenum hose was the worst hose on my car. I really would have had no issue re-using any other hose I had; all were in good shape, no soft spots or bulges, but that plenum hose was VERY soft, and that would have stranded me somewhere, with an expensive tow or an expensive shop repair to get it back home.

The thermostat housing assembly is a common failure, could be cracked, just like my radiator was, and it's pricy, and there are about 47 variants of the part, depending on year and aspiration. I haven't even ordered one, yet, I'll see what it look like when I get in there.

Look for the vacuum hoses while the engine cover is off. If it hasn't already been repaired, you'll probably find it broken, which affects the secondary air injection (a cold-start emissions system) and the fuel pressure sensor, which sits on the fuel rail with fuel pressure on one side of a diaphragm and vacuum on the other. I had some codes after reassembly that pointed to a vacuum leak, which was odd since I'd repaired the vacuum hose, but that's explained in my thread.

You have almost NO room to work in there until the fan and shroud are out. Keep the kids away while you work if you're doing this yourself, because they will hear things they probably shouldn't...

 

Thank you everyone for the response; after a long debate, we decided to have a Jaguar specialist shop look at it, mainly because we don't really have much free time to work on it.

They soon found the issue to be a stuck thermostat, so that was done along with a new expansion tank and water pump. The coolant hose are still in decent shape so that is good news

After sorting it out, the Big Cat is back in business