leo837

Same failure mode as previous, worn lobes on the pulley. Might check a breakers yard & failing that try the alixpress option. I've yet to verify but a lot of the Delphi compressors seems to have similar, possible interchangeable clutches & pulleys.

This is an old thread but for anyone looking at this.. the fix doesn't last long, same thing happened again after about 6 months. A more permanent fix seems either a complete compressor change with improved clutch design or perhaps changing just the pulley & clutch to improved design. The original pulley is not compatible with the improved clutch. Hard to source however, this seems to be an option: http://www.aliexpress.com/item/1005005497886208.html I'm dubious of the quality but not many other options. Might give it a go (or try a breakers yard) & report back..

Finally got this sorted out. Turns out there's a few more settings to update: I changed a few, & I believe a combination of these changes are required but can't confirm exactly which. The changes I made include: Coding of service interval extension (SIE) - Status ESI or SID Coding of service interval extension (SIE) - Selection of ESI or SID Coding of service interval extension (SIE) - Oil level (not sure about this one particularly) Following these (& the previous re-enabling the TOG) changing Coding of service interval extension (SIE) - Oil quality immediately resulted in '---' in oil service due date/miles Hope this helps others! PS. Does anyone know what: Coding of service interval extension (SIE) - remote clock receiver Does??

Thanks, will take a look again tomorrow

Thanks for the info. I've re-enabled the TOG sensor, bit more here. The oil quality is still stuck at poor but perhaps it requires some time to update? Can't seem to find the post you mentioned from Gary - here it is

Thanks for the reply but still no joy with this. Oil quality remains at poor despite many attempts to change it to good. Next service is still about 1 yr. I wonder if anyone has any idea where to go from here?

Thanks for the help!

Just a quick update. Finished the job today. About 2.5hrs start to finish at a leisurely pace. Done in situ, access after removing the front wheel is good. Beside the usual tools the only requirement is a circlip pliers. The hardest part is getting the armature with the three legs off. A puller might have helped but I managed without. I attach some pics including the old pulley. You can see where the lobes have worn. The armature with the 3 legs have protrusions at the end of each leg that engage with these lobes. Looks like they simply worn out. I've only got around 85k on the clock so lifetime on these parts looks limited! A/C back to normal.. just in time for the cold weather 😒

Hello all, Apologies for bring this topic up yet again but I've done a fair bit of searching & can't find an answer. I've just completed a service & used the correct oil etc so would like to change from fixed to variable servicing. I checked the codes on the car maintenance booklet & it does show a variable service interval (QI6). I reset SRI with VCDS & then went in & tried to change the oil quality from poor to good. VCDS says it's accepted the change but after reloading it's still poor. The next maintenance is showing approx 1 yr. I got this procedure from here. Am I missing something else? Many thanks

For anyone looking at this it might be useful to know the part number of my compressor, which is 5K0820803A, a Delphi DH5. It also has a code 6CVC 140 on the bottom right of the label. I've sourced a replacement pulley & clutch here Hopefully I won't be looking at this myself in a year or two!

Just remembered that I found two hex bolts sitting on the driveway about 3 weeks ago. Its obvious now where they cam from. I probably change both pulley clutch to be safe.

Many thanks for the info. Is there a better retrofit pulley/clutch setup available? This doesn't seem like a great design & I dont want to be doing this again in a year or two.

Thanks for the info. I just tried turning the centre nut on the compressor & it turns freely so I assume I've been (somewhat) lucky. Having a quick looks it looks possible to change in situ via the wheel arch. I see you mention use a puller to get the clutch disk off. How does it reattach? Are the three legs press fitted into the pulley? Many thanks

JR, Thanks again for the replies. I'll give the compressor a check tomorrow & see how it goes.. It seems that ebay part is fairly different, I think there are different clutches around. Do you think its compatible?

Well that could certainly be the issue! I had a look at the compressor again & the centre bolts & fixtures are stationary (no rotation whatsoever) while the pulley is in motion. I've attached a photo, hopefully you can see what I mean. The AC was selected on when the photo was taken. It looks like this may be a replacement part . And it's been mentioned before on this forum Looks like I'll need a puller but hopefully won't need to work about degas etc..

Looks like that hasn't fixed the a/c so now suspecting the modulating valve. Going to have a look today or tomorrow but has anyone changed one on the car without removal of the compressor (following degas of course)? Is there a way to confirm a faulty valve based on electrical resistance across terminals or applying 12v to see if theres a lack of a 'click' If anyone has a part number it would be great also (CFFB engine). Thanks,

Just noticed that the date looks like when the issue began..

Perhaps I've found the problem, a VCDS scan shows the following: Would this be enough to cause the AC to pack up? I've reset it & will see if I get any joy..

Many thanks indeed for the reply. I've just run the car from cold & the fans are not running. I'll try again when warm to confirm. I should be able to get a VCDS scan do & take it from there. Thanks again, will keep you updated

Thanks for the messages. I'll have to check the rad fans & get back to you. I was onto a garage here in Dublin, €500 for parts & labour for used part, €1000 for genuine new. Is it even worth thinking about changing as a DIY job (gas vacuuming/ re-gas aside)? I've done a bit of work on cars but no specialist tools. Thanks again

Hello all, I have a 2013 Superb MK II (CFFB engine) with 80k miles on it. The AC has suddenly stopped working with no warning. When the AC is selected on there is no hint of a change in engine load & (from what I remember) no quiet click from a relay engaging. There is no temperature change in the air coming from the vents regardless of the temperature selected on the climate control. I’ve checked the fuse (located between steering wheel & drivers door). I’ve run a OBD scan with no faults found. My question is where do I go from here? Should I consider checking any sensors (I’ve seen mention of temperature & pressure sensors), try a re-gassing or presume its a compressor failure? I’ve had a quick look at the engine bay but cant see anything immediately obvious. In the meantime should I avoid driving the car to prevent further damage? Thanks for any info,