That website seems to be Singapore-based and nothing to do with automotive air-conditioning at all.

Just an observation. I hope the (new) member who posted it isn't a scammer

 

There is a good possibility I have an NOS one left over from my build.
Since I'm going to be away from the computer please call or text me @ 650-455-1110.
Thanks,Stephen D'Angelo
1107 Galvez Drive
Pacifica CA 94044

 

Recently on a road trip, I used some small flex hoses, and piped them into the rear AC vents, and then attached the other end near the headrest. Now I have cooler air flowing to the back of my neck. These AC units are weak, and mine has no leaks. Granted I have 200k plus miles. Cold air comes and goes at times too.

 

Not sure if it is possible to adjust compressor clutch air gap on these compressors used on Jag. If air gap gets too big, usually 1mm and greater starts creating problems especially when you need full performance. It may click on/off fine, but when everything gets hot clutch starts to slip. Later on it will loose grip more and more, and propably compressor on/off sequence go wrong too -> no full power from a/c.

We have had 30-34c degrees heat wave here in Finland too. XJS is doing well, lady in the house said her swedish brick didn't cool well enough "do something NOW"... adjusted compressor clutch air gap and got better cooling. (this car/compressor is well beyond its "best before" date, but as Volvos tends to do, it just keeps on going)

 

How does one adjust the clutch air gap?

 

I've read everyone's input on what this car's problem could be, have you checked that the Recirc flaps are actually closing the outside air off to the car? Nothing harder then cooling off the outside air.

Larry Louton

 

Usually it is done by removing shim(s) from clutch assy. First thing is to measure gap between pulley and freely rotating clutch disc, if it is close to or more than 1mm it needs to be agjusted down.
Good overall gap is somewhere around 0,6mm.
​​​​​​This is not from Jaguar maint manual etc etc, just very general info which works on most compressors with magnetic clutch.

Removing shims means removing clutch front disc, usually it is held by center nut, after nut removal disc needs to be pulled out. Usually it needs puller which pulls disc off against center shaft.
Again, not sure if this works with Jaguar compressor and insufficient cooling can be something else too.
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Just one easy thing to check out.

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and how do you check that? I feel like the flaps are not closing because I can smell everything that is happening outside, like smoke or burning clutch and brakes from other cars

 

As a general point: If you have the Delanair III, then it has a manual mode, the temp control can be pulled outwards, and this provides full cold.
For a short while, I had a 3.6 Coupe with the Delanair III, 1990 model. In this mode it would absolutely freeze the car. So if your car will not do so in manual mode, then the system is definitely not up to spec.

 

As an AC & R guy in a former life, put some 134A in it. Do the easy stuff first.

 

Last week, I took it to my Local Indy Jag mechanic and he decided to thrown in some R134 in it and I suddenly have the best cold air that its ever had. Ive also retinted the car with ceramic tint, including the windshield. The car is a pleasure in this heat, now. Thanks for the suggestions.