All Things Mk5 > How to Guides / Troubleshooting
Air Con Clutch
csrigo:
--- Quote from: colesey on March 10, 2021, 09:07:24 pm ---Is this the part needed?
https://www.ebay.co.uk/itm/Air-Conditioning-A-C-Delphi-Compressor-5N0820803-For-Seat-Skoda-VW-Repair-Kit/232378514061?fits=Model%3AGolf%7CPlat_Gen%3AMK+V&hash=item361ad6ba8d:g:WOsAAOSwFrtbNLic
--- End quote ---
Cheers mate. Aye that's the part I'm thinking about tbh. Maybe not that exact seller but same part yeah.
--- Quote from: FJB on March 11, 2021, 06:48:42 am ---
--- Quote from: csrigo on March 10, 2021, 06:50:51 pm ---Sorry mate terminology might be wrong but I think it does have a kind of "clutch" setup. Solenoid valve engages electromagnet which pulls the inner clamp plate (inner part of the pulley) and locks it to the outer pulley essentially when the compressor is engaged. If you watch your pulley with the AC off only the outer part will turn, switch it on and the whole pulley rotates.
Solenoid controls the magnet is what I was under the impression? I may be wrong but I thought you can change the electromagnet part etc seperate?
--- End quote ---
No there is not a magnetic clutch on most ac compressors fitted to the climate control system on the gti, the pulley is permanently engaged, the climate control module send a signal to a solenoid valve on the rear of the compressor, this valve turns the flow of refrigerant through the compressor on and off.
You need to check the part number sticker on the front of the compressor to be sure, if your compressor looks like this you definitely do not have a clutch.
https://www.ebay.co.uk/itm/GENUINE-AUDI-A3-S3-8P-VW-GOLF-MK5-GTI-2-0-A-C-AIR-CON-COMPRESSOR-PUMP-1K0820803N/402698207080?epid=1709347628&hash=item5dc2aeff68:g:RrgAAOSwhkFgLnNo
--- End quote ---
Ah ok cheers mate ill have a look shortly and find out either way and stick it on here.
csrigo:
--- Quote from: FJB on March 11, 2021, 06:48:42 am ---
--- Quote from: csrigo on March 10, 2021, 06:50:51 pm ---Sorry mate terminology might be wrong but I think it does have a kind of "clutch" setup. Solenoid valve engages electromagnet which pulls the inner clamp plate (inner part of the pulley) and locks it to the outer pulley essentially when the compressor is engaged. If you watch your pulley with the AC off only the outer part will turn, switch it on and the whole pulley rotates.
Solenoid controls the magnet is what I was under the impression? I may be wrong but I thought you can change the electromagnet part etc seperate?
--- End quote ---
No there is not a magnetic clutch on most ac compressors fitted to the climate control system on the gti, the pulley is permanently engaged, the climate control module send a signal to a solenoid valve on the rear of the compressor, this valve turns the flow of refrigerant through the compressor on and off.
You need to check the part number sticker on the front of the compressor to be sure, if your compressor looks like this you definitely do not have a clutch.
https://www.ebay.co.uk/itm/GENUINE-AUDI-A3-S3-8P-VW-GOLF-MK5-GTI-2-0-A-C-AIR-CON-COMPRESSOR-PUMP-1K0820803N/402698207080?epid=1709347628&hash=item5dc2aeff68:g:RrgAAOSwhkFgLnNo
--- End quote ---
Got you mate done a bit more research and I see what you mean. Not checked what compressor I have yet but I think your right and its the clutchless variant as you say. I wonder if changing the solenoid would help. Trying to find the part number for it but will probably need my compressor number first id imagine.
Cheers for the info I'll keep this up to date with what I find for anybody else comes across the same issue.
FJB:
The solenoid valves are available separately, you need to check which brand of compressor you have before ordering. There were 3 makes of compressors used, Delphi, Sanden and Zexel, I believe the Delphi and Sanden valves are interchangeable, the Zexel is not.
pudding:
So if you relax the serpentine belt tension the pulley doesn't spin freely? Mine does, which I'm guessing/hoping is normal! I haven't looked into how the compressor works on these cars tbh.
Let us know how you get on mate.
csrigo:
Just to keep the thread up to date. I've found I have the denso compressor. I have the suspected part number hard to see it. Can't find the part number for the solenoid on its own is the next problem if anybody can find it at all??
--- Quote from: Pudding on March 12, 2021, 07:01:30 pm ---So if you relax the serpentine belt tension the pulley doesn't spin freely? Mine does, which I'm guessing/hoping is normal! I haven't looked into how the compressor works on these cars tbh.
Let us know how you get on mate.
--- End quote ---
Nonworries mate will do. Can't remember if the pulley spins freely I will double check tho....internal resistance of the compressor may prevent this.
I'll update.....got bigger issues just now....my TTE has just started a siren wailing....so shaft is f*cked....can't believe it.....another thread inbound lol
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