Far worse I M H O
That P O S gauge, can cook your engine, before you might realize it's even getting HOT!!!!!!!!!!!!!!!!!!

 

Amazing guide. Exactly what i hv been looking for. I just wanted to change the sensor but the new 9ne was not going in. So i wanted to take the tank out and put it in.. hats off whoever made this guide. You r a g..

 

Hi Reead Boodhoo,

Welcome to the Jaguar Forums! It's great to have you with us.

Please visit the New Member Area - Intro a MUST and post a required introduction so we can learn something about you and your Jaguar and give you a proper welcome.

Cheers,

Don

 

Do get the tank from the dealer and replace it yourself. Unless you have the precise Park code for that vehicle don't buy it from anywhere else.

I've done it twice and it's not very difficult the second time the tricky part is removing the pain on the lower connection hose after that it's easy. When you put that same lower hose back on you'll feel it Snap-on.

 

Just don't loose that metal snap ring!!!!!!!!!!!!!!!!

 

Well I'm in the process of removing of what appears to be a 90 degree black metal connector that somehow fastens to the plastic port on the bottom of the radiator expansion tank. Can somebody give me a tip or two as to how to remove the connector? It was probably discussed before in this thread, but I would appreciate some guidance. Thanks.

 

Well, I did manage to install the new radiator expansion tank, but now I'll have to wait until the vent hose comes in. One not only has to remove both ends of the large top coolant hose, and swing it out of the way. but there is also a smaller coolant hose underneath that has to be disconnected at the engine. This is in order to gain access to the retainer clip at the bottom outlet of the radiator expansion reservoir.

 

Any tips on how to remove the metal clip from the lower hose?

 

Hi Andy,

You don't need to remove the metal clip, and it's best if you don't try, because it usually flies off of the hose and lands in some inaccessible part of the engine bay, never to be found again.

The trick is to pull it out just until both legs click into their retracted positions. Normally I use a small flat-bladed screwdriver. Slip the tip into the raised section of the clip and pull straight away from the hose just until both legs of the clip click into their retracted detents. However, due to the limited access to the clip on many X350s, I may use a hook-type mechanic's pick to pull on the clip. The type I use is either the second from the left or the one on the right:



Once you get the clip pulled into its retracted position, it can still be very difficult to work the hose off of the reservoir, but with continued effort you'll get it off. Note that there is a locating tab on the reservoir fitting and a groove inside the hose fitting that prevent it from spinning, so you can't twist it to help it come off.

Also, before you even attempt to disconnect the hose, be sure you have removed the 8 mm screw that secures the reservoir, which allows you to lift up the right end (as viewed from in front of the engine bay) and move the reservoir a little to your right to slide the tabs on its left side out of its bracket. This will let you lift the reservoir just a little for very slightly improved access to the coolant level sensor and hose. And disconnect the sensor so you don't risk damaging its wiring or connector while you're working the hose off.

Before you connect the hose to the new reservoir, put a dab of O-ring grease (dielectric grease, disc brake caliper grease or other clear silicone grease) on your finger and reach inside the hose fitting and wipe the grease on the O-ring inside the fitting, and wipe a little on the fitting on the new reservoir. Push the hose clip back into its seated position and you should be able to push the hose onto the reservoir fitting until it clicks.

Cheers,

Don

 

Andy, just a quick point that may assist...When my tank was leaking, I found that it was doing so past the filler cap...
I went to the expense of buying a new tank before discovering that this was being caused by a failed Thermostat!

 

Many thanks Don . Very helpful. Will try again tonight!