Hi all
This problem has plagued me for ages. Where is the water coming from.
I have investigated all the usual places, are the windscreens on the xj40 prone to leeks.
I know someone said that it might be from the well under the wiper motor, but I have checked that out and dont believe it comes from there.
Is there anywhere I can take the car to have the screen sealed. My carpets etc have just been consigned to the skip.

Thanks in advance.
Regards
john

One rusty bulkhead coming up.






of course depends where the lady has been driving it.









seen enough??
I would check all this before doing windscreen.

This is exactly like mine. I have now given up, but simply try to keep the car covered. I remove the sound proofing and carpets when I am not using the car. The water is coming in somewhere above the gearbox tunnel and soaks the insulation which is a fantastic retainer of water. Must e the windscreen, ut does it really justify the expense?
...........tis a bugger!

oh, yeh. forgot to mention, i have silicone sealed the bottom of the windscreen too. that must be 6-7 different actions to try resolved one problem.

maybe to cover the car is the only answer. you're right

Thanks for the latest replies. It seems everyone is as frustrated as I am. But I will still try to resolve the problem in the summer. If I happen on a magic formula I will let everyone know.
The latest weather forcast down here is heavy rain perhaps turning to snow, with that in mind, I have just covered the car with my extra large car cover bought from Lidl.
Anyway nice to be back in the forum talking to jag guys

i think it must be something to do with what the last poster says. my most recent action- i have removed sponges that live inside the pillar cavity, located directly behind the the fuseboxes, on both sides. they were both quite wet.
i think i will try removed the front wings and have a look whats going on behind there, as there is defo some water action going on somewhere in that region, but cant figure out how that gets in. hopefully all will be revealed

Removing the wings is not nice as the bumper has to come off, the side mounts rot, the top bonnet buffer bolts rot and snap off, the inner wheel arch liners are a pain, the  bolt that holds the wing to the sill gets covered in crap so you have to wire brush until the bolt head can be found, mine did come out clean, remember there are 2 bolts on the a post.
Also the side repeaters are clipped in place but also have double sided gasket to stop ingress of water(what a bloody laugh)
Now it has been commented that they dont know how the water gets down behind the wing and cable entry, quite simple, when looking at the wing where it meets the base of the windscreen and the top of the front doors mirror area there is a large area that is open due to the pressings of the wing and the fact Jaguar thought we all park our cars on flat ground so all water would be directed away(how stupid of us not to relise this)
Having done the hide and seek on my Daimler 93 car i can confirm that in order to do the job correctly you have to be brutal to overcome the bad design, for those who want to keep there cars from becoming a gold fish bowl there is only one way to do it.
Strip both wings off, remove all carpets, if bulkhead is suspected then removal of everything from the bulkhead to the  front of the rear seats then check the front foot wells move fuse boxes clear to inspect behind, on 93 cars disconnect battery remove live supply from base of bulkhead connections, they melt during welding, don't ask, now at this point you are in the house or pub feeling etremely frustraited as you have 50% of the car littering the drive/garage/spare room wondering how it goes back together and why is there daylight showing in several areas.
To date i have  had welded the floors, cable entry and several small sections around the front left jacking point, the car has been resprayed and currently sits in a single garage full of the parts awaiting re-assembly time scale 18 months on and off doing the job.
In conclusion buy a corsa while repairing the faults because it is not going to be a weeks work and you still need a car.

Regards and thanks for reading this small novel

The picture is of a pre 92 car as the main cable harness runs through the bulkhead, the area of rot is the sunroof drain tube these were not welded in place and have a mastic goo spread around, on 93 cars the harness exits the panel below the drain rubber tube in the picture as you can see the hole in the picture is where the indicator harness goes through note that the area was masked off so the the sealing cable grommet could seal, the same is done for the harness grommet and that is where the water gets in poor sealing.