Aircon compressor - Alfa Romeo Forum
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Aircon compressor

Probably posted loads of times and is on here somewhere.Mine doesnt work it has no gas in it ,but the centre pully doesnt engage it is not seized .Does it need gas in it to engage if so is there a pressure switch somewhere .There only seems to be 1 wire going to it ,is this right? Also anyone used one of those regas kits you can get for home use ?

Thanks Mark
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The clutch won't energise if there is too little gas pressure ( also too much pressure ). A single wire is normal - it earths through the engine.

If there's no gas in the system you can't use the DIY refill canisters as there is no way of knowing what is in the pipes ( vacuum or air ). You need pro equipment to vacuum out the system and check the integrity of the seals/pipework. If the system has been open to the air for a long time, you may also want to consider changing the receiver/drier.

Have a look on Groupon or similar. There's a place near me for example that regularly has Groupons for an A/C service for 16 to 20.
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