So tell me the difference between the compressors for cars with rear climate control and without rear climate control please.
There must be a difference as all the parts places ask and availability is affected by my choice. I don’t necessarily trust the parts counter folks .

I don’t have rear climate control on my ‘04 XJR and I suspect mine should take a clutched version vs the PWM version.

But I’d really like you folks feedback before I buy.

I can’t really find an image showing both as to the differences.

Regards

 

Jaguar x350 2002 to 2009 all have airsuspension . So they (basicly)all have an airsuspension compressor from "Wabco "in the front left side infront of wheel hiding behind wheel well liner and bumper
They also do have climate compressor on all cars, mounted left aigainst the engine driven by auxillary belt .
Some even have dual system climate front and rear

 

[img alt="Wabco airsuspension taken out and apart for a referb
Piston ring to raise the airpressure delivery and desiccant beads in the black part behind the cylinder ( blue hose 4mm ) to dry the air before being sent to the boot underneath spare wheel. Goes to valve block to airsuspension struts by Bilstein and air pressure reservoir."]https://cimg5.ibsrv.net/gimg/www.jaguarforums.com-vbulletin/2000x1504/20260406_172143_deeac739126fa41761c1c19e305d5614c3 302a3f.jpg[/img]
Wabco airsuspension taken out and apart for a referb Piston ring to raise the airpressure delivery and desiccant beads in the black part behind the cylinder ( blue hose 4mm ) to dry the air before being sent to the boot underneath spare wheel. Goes to valve block to airsuspension struts by Bilstein and air pressure reservoir.

 

 

There are two different circuits with freon for the dual climate system . You would have a panel at the end of the middle console to adjust temp in the rear seats area ,plus some do have vented seats with tiny holes in the leather

 

Yes, thank you. But I’m particularly confused about which A/C compressor to choose. All I’m finding is images of the dual climate controlled air conditioning compressor, nothing for the single climate control package.
Short of buying both and making the call upon removal, which is something I’d like to avoid. After all these aren’t $150 compressors.

 

Some confusion in this thread? He is asking about the AC compressor. NOT the air suspension compressor!

Yes they take a different AC compressor if you have rear AC. Now again as I always post JLR does everything by the last 6 digits of your VIN. If you can post that we should be able to narrow down which part number you need.

From the beloved JPART I find these part numbers depending again on your VIN.





Next we need to be aware that these are now OLD cars. This means whatever part number we come with needs to be checked for supercessions and obsolete part numbers.

Post back with your cars info. AC compressors will be expensive from JLR and I always try to go directly to the vendor. I would try to get a picture of the label on your existing compressor as even with my VIN I still found some small differences in compressors and connections.

Here is what the label looks like on the compressor itself. This is from a later 2014 X351 XJR. I know it's hard to get a photo because of where it's at! But it WILL help.





There are other tips and recommendations but are you doing the AC work or a shop? When changing compressors you need to change the filter/dryer or else no warranty on the new compressor!

One last comment is about counterfeit parts. They are all over and even Sanden has information on how to determine if you have a "real" Sanden product. So be cautious about low priced compressors.
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Perfect, thank you

my last 6 digits are G31374

 

Approx G259xx were build in december 2003 and registrered in december .
yours must be an early 2004 build car.

 

LS-GTA I posted assuming your car does have rear climate control but reading your first post again it appears you do not?

Yes the rear AC cars do not have the old style magnetic clutch. Instead it has a DPS (Differential Pressure Solenoid) setup to adjust the AC pressures. These type of compressors have no clutch and turn 100% of the time. Usually they have a shear pulley on the front so if the compressor locks up the pulley will keep turning so you don't burn up the belt.

I listed both sets of parts numbers but what's below is only about cars WITH the rear AC option. Sorry if I added to the confusion!

Thanks for the VIN numbers. JPART lists C2C16366 for your car IF it has the rear AC option. As I thought with old part numbers it has been superseded by several other part numbers. So look for these numbers too.




The compressors are about $1K or so from JLR. I have not been able to find a used one where I could read the tag on the compressor but I "think" it's a Denso #437100-7280.

Here is an auction for the Jaguar version and I can see the tag I am talking about but it's too small to read. Again to prevent getting the wrong part and this is a special one with the rear AC option. Get a picture of your current compressor tag/sticker.

OEM AC Compressor

Here is where it will be and it's not very big.




Hope you can post a picture?

When I replaced my OEM compressor I saved many hundreds of dollars after I found it was a Sanden and found what their part number was on the compressor sticker.
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I am extremely grateful for your help and I will try and get it up on the lift this weekend as I have front brakes to install. If so I’ll post a picture. Again many thanks to you and everyone else who has chimed in.

 

Sorry again for miss reading your post as I got off track on the rear AC stuff which is of no value to you.
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No worries my friend

 

I beg your pardon, but, contrary to the statement made by clubairth1 in a previous post, the MY2004 Jaguar technical specification states that all X350 have the DPS type A/C compressor, and not only the ones with 4 zone climate control:




Please also refer to the attached excerpt from the technical spec.

Best regards,

Thomas

 

Yes your right the DPS has nothing to do with the rear AC. It was added so the AC can be more precisely controlled. Some cars have them and some don't. Easy to see by looking. The DPS makes the AC compressor run 100% of the time and is internally controlled.

My DPS failed on my 2014 XJR (No rear AC option) which lead to a long string of repairs. The short version is if you have any DPS codes or problems your FAR ahead to plan on a AC compressor replacement. The amount of work required to get to and replace the DPS is the same as a compressor replacement. Plus now you have a new one with warranty.

Interestingly my car while having the DPS also has the old style magnetic clutch!
Here is a side by side comparison. My 2014 OEM version is on the right. You can see the wires running to the clutch. The other one has no wires to the pulley. This is again another variation I had to figure out.





Next JLR has some errors in their TSB on the DPS problem. This caused me to order the wrong part. Yes there are also different versions of the DPS and they DON'T interchange! Another reason to forget the DPS and go straight to the compressor replacement.
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Maybe there was a change in design from X350-X358 to the X351, which seems to be your current car?

Best regards,

Thomas

 

Yes I have the later X351 model. There were more undocumented changes and it got even worse as they changed how those peanut fittings attach to the compressor AND they changed the seal assembly.
Plus they added a face O-ring to the compressor itself!
Replacement compressor has the yellow O-rings.




Here is how they changed the ends of the tubing seals. Lucky they do interchange and I have had no leaks.




The worst was they changed the distance from the stud to the AC port on the peanut fitting. This means yes the tubing fits but you can't attach it because the mounting stud has been moved! Again no mention anywhere about these changes. I sliced the back side of the tubing fitting. This made the mounting hole a slot instead. Simple mod once I looked at it.

JLR changed the hoses and the compressor (BUT not the part numbers!) so if I had also ordered both AC hoses that attached to the compressor it all would have fit together. As it was I had a leak in one hose and a DPS problems. So I had they new style compressor and one of the new style AC hoses.

But the point of all this is to CHECK your AC compressor and get a picture of the tag before ordering anything!
All these changes were done on the correct part number for my car. So be aware of undocumented changes!
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