Air Con problem

Auldtam · Apr 8th, 2020, 19:46

Recently purchased a 1998 V70 knowing air con not working. Had a look today, when I turn on the AC I can hear the compressor click on and then off within a few seconds. Any ideas why this is happening.

Cookeh · Apr 8th, 2020, 20:15

Sounds like the clutch gap on the compressor is out. Google compressor shim fix - the short of it is you can fix it by inserting small shims (zip tie, bread tie) between the rings on the compressor to get the gap into spec. Or you can remove the clutch and adjust the shims to do the job 'properly'.

Luxobarge · Apr 8th, 2020, 22:29

Being low on gas will also cause this. Check the clutch clearance as above, if this is OK then go for a re-gas and it'll almost certainly work OK. Just in case there's a small leak somewhere, get them to put some UV dye in it at the same time, then if it's leaking they can detect even the smallest leaks with a UV light. Small leaks won't show up on a vacuum test.

Apr 8th, 2020, 19:46	#1
Auldtam Member Last Online: Mar 4th, 2024 14:36 Join Date: Aug 2008 Location: Glasgow	Air Con problem Recently purchased a 1998 V70 knowing air con not working. Had a look today, when I turn on the AC I can hear the compressor click on and then off within a few seconds. Any ideas why this is happening. __________________ Black XC60

Apr 8th, 2020, 20:15	#2
Cookeh Premier Member Last Online: Sep 14th, 2022 17:04 Join Date: Jan 2018 Location: Derbyshire	Sounds like the clutch gap on the compressor is out. Google compressor shim fix - the short of it is you can fix it by inserting small shims (zip tie, bread tie) between the rings on the compressor to get the gap into spec. Or you can remove the clutch and adjust the shims to do the job 'properly'. __________________ 1995 Volvo 850 T5 Estate (Manual)

Apr 8th, 2020, 22:29	#3
Luxobarge Premier Member Last Online: Apr 26th, 2024 09:37 Join Date: Jan 2011 Location: Horne (Nr. Horley)	Being low on gas will also cause this. Check the clutch clearance as above, if this is OK then go for a re-gas and it'll almost certainly work OK. Just in case there's a small leak somewhere, get them to put some UV dye in it at the same time, then if it's leaking they can detect even the smallest leaks with a UV light. Small leaks won't show up on a vacuum test. __________________ Some people are like Slinkies, they serve no useful purpose but they still bring a smile to your face when you push them downstairs.

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