aircon cycling.

Cypher007 · Mar 14th, 2004, 09:06

i tried my aircon yesterday and when sat with the engine idling it keeps cycling the compressor on and of at about 30s intervals. when the weather was colder i didnt notice this when i tested it upon buying it. is it broken or can i just get it recharged? how much should a recharge cost?

SG · Mar 14th, 2004, 10:51

It sounds like you're low on gas.

A recharge will cost ~£100 but will only help assuming there's no leak. The 850's aircon system is a bit of weak point - do a search on "evaporator". You might want to brace yourself!

sholtby · Mar 14th, 2004, 13:33

I think the compressor is supposed to cycle.

Simon

Cypher007 · Mar 14th, 2004, 15:03

i now its supposed to cycle a little bit but not this much. the guy who previously owned it hardly used the aircon apparently, i wonder why, hmm. anyway in 2000 he had a uv dye put in, so if i can find a uv torch it should show any leaks.

Cypher007 · Mar 14th, 2004, 15:04

whys the refridgerent so expensive?

Mar 14th, 2004, 20:14

its not, its just part of the great british rip off!

Cypher007 · Mar 15th, 2004, 11:23

does anyone now an aircon guy who could do it on the cheap, nudge nudge wink wink.

pyaap · Mar 15th, 2004, 12:19

The A/C will cycle quite regularly to prevent the evaporator from freezing. 30s cycles does sound a little too frequent but it could well be the case. Why not just call your 'friendly' local dealer and ask them over the phone. They're usually quite obliging, especially if you speak to their actual technical guys and not the service advisers.

Mar 15th, 2004, 13:29

Andy,

Great British Ripoff is absolutely right. You can buy a 1 kilo can of R34 to re-charge your system including the pipes and adaptors etc. in Walmart for £2.20 thats 2 pounds and 20 pence!

Cypher, have a look through your local yellow pages or Autotrader, you should get your system checked, vacced out and recharged for about £60 if it needs it. However, the cycling you refer to will probably be caused by the cooler outside ambient temperature at the moment which makes the pressures in the system drop, not necessarily due to shortage of refrigerant.

If you leave the car ticking over for a while so that underbonnet temps are high, then switch on the A/C, it may not cycle as much. Don't forget, you should run your A/C at least once a week for about 5 minutes as the carbon seal in the compressor will begin to leak otherwise.

Chris

Cypher007 · Mar 15th, 2004, 17:07

i counted the seconds today and its more like 10s. wierd thing is it didnt do this when the weather was cold.

Mar 14th, 2004, 09:06	#1
Cypher007 Master Member Last Online: Jan 8th, 2024 14:20 Join Date: Dec 2001 Location: Lincolnshire	aircon cycling. i tried my aircon yesterday and when sat with the engine idling it keeps cycling the compressor on and of at about 30s intervals. when the weather was colder i didnt notice this when i tested it upon buying it. is it broken or can i just get it recharged? how much should a recharge cost? __________________ Volvo 854 T5R Yellow 1994 Aquamist 2D (Don & Aquamist) BMC panel filter (Don) Ferrita Cat Back (Don) Denso Iridium Spark Plugs (Hong Kong) PowerFlex Top Engine Mount (?) PowerFlex Wishbone Bushes (Elk Parts) 302mm front brake upgrade Goodridge front hoses (rears to be fitted later) 600W Inverter (ebay) History: 1991 Volvo 340DL (1982) 1994 Volvo 360GLE (1989) 1999 Volvo 360GLT (1988) 2002 Volvo 850GLT (1991) 2004 Volvo 850T5R (1994)

Mar 14th, 2004, 10:51	#2
SG Member Last Online: Dec 1st, 2020 00:09 Join Date: Dec 2001 Location: Cambridge	RE: aircon cycling. It sounds like you're low on gas. A recharge will cost ~£100 but will only help assuming there's no leak. The 850's aircon system is a bit of weak point - do a search on "evaporator". You might want to brace yourself!

Mar 14th, 2004, 13:33	#3
sholtby Premier Member Last Online: May 26th, 2010 20:17 Join Date: Dec 2002 Location: north east	RE: aircon cycling. I think the compressor is supposed to cycle. Simon

Mar 14th, 2004, 15:03	#4
Cypher007 Master Member Last Online: Jan 8th, 2024 14:20 Join Date: Dec 2001 Location: Lincolnshire	RE: aircon cycling. i now its supposed to cycle a little bit but not this much. the guy who previously owned it hardly used the aircon apparently, i wonder why, hmm. anyway in 2000 he had a uv dye put in, so if i can find a uv torch it should show any leaks. __________________ Volvo 854 T5R Yellow 1994 Aquamist 2D (Don & Aquamist) BMC panel filter (Don) Ferrita Cat Back (Don) Denso Iridium Spark Plugs (Hong Kong) PowerFlex Top Engine Mount (?) PowerFlex Wishbone Bushes (Elk Parts) 302mm front brake upgrade Goodridge front hoses (rears to be fitted later) 600W Inverter (ebay) History: 1991 Volvo 340DL (1982) 1994 Volvo 360GLE (1989) 1999 Volvo 360GLT (1988) 2002 Volvo 850GLT (1991) 2004 Volvo 850T5R (1994)

Mar 14th, 2004, 15:04	#5
Cypher007 Master Member Last Online: Jan 8th, 2024 14:20 Join Date: Dec 2001 Location: Lincolnshire	RE: aircon cycling. whys the refridgerent so expensive? __________________ Volvo 854 T5R Yellow 1994 Aquamist 2D (Don & Aquamist) BMC panel filter (Don) Ferrita Cat Back (Don) Denso Iridium Spark Plugs (Hong Kong) PowerFlex Top Engine Mount (?) PowerFlex Wishbone Bushes (Elk Parts) 302mm front brake upgrade Goodridge front hoses (rears to be fitted later) 600W Inverter (ebay) History: 1991 Volvo 340DL (1982) 1994 Volvo 360GLE (1989) 1999 Volvo 360GLT (1988) 2002 Volvo 850GLT (1991) 2004 Volvo 850T5R (1994)

Mar 14th, 2004, 20:14	#6
andy1 Guest Location:	RE: aircon cycling. its not, its just part of the great british rip off!

Mar 15th, 2004, 11:23	#7
Cypher007 Master Member Last Online: Jan 8th, 2024 14:20 Join Date: Dec 2001 Location: Lincolnshire	RE: aircon cycling. does anyone now an aircon guy who could do it on the cheap, nudge nudge wink wink. __________________ Volvo 854 T5R Yellow 1994 Aquamist 2D (Don & Aquamist) BMC panel filter (Don) Ferrita Cat Back (Don) Denso Iridium Spark Plugs (Hong Kong) PowerFlex Top Engine Mount (?) PowerFlex Wishbone Bushes (Elk Parts) 302mm front brake upgrade Goodridge front hoses (rears to be fitted later) 600W Inverter (ebay) History: 1991 Volvo 340DL (1982) 1994 Volvo 360GLE (1989) 1999 Volvo 360GLT (1988) 2002 Volvo 850GLT (1991) 2004 Volvo 850T5R (1994)

Mar 15th, 2004, 12:19	#8
pyaap Non-T4 T4s RULE!!!! Last Online: Mar 29th, 2017 11:24 Join Date: Nov 2002 Location: Bristol / Bath	RE: aircon cycling. The A/C will cycle quite regularly to prevent the evaporator from freezing. 30s cycles does sound a little too frequent but it could well be the case. Why not just call your 'friendly' local dealer and ask them over the phone. They're usually quite obliging, especially if you speak to their actual technical guys and not the service advisers.

Mar 15th, 2004, 13:29	#9
Billy Sasterd Guest Location:	RE: aircon cycling. Andy, Great British Ripoff is absolutely right. You can buy a 1 kilo can of R34 to re-charge your system including the pipes and adaptors etc. in Walmart for £2.20 thats 2 pounds and 20 pence! Cypher, have a look through your local yellow pages or Autotrader, you should get your system checked, vacced out and recharged for about £60 if it needs it. However, the cycling you refer to will probably be caused by the cooler outside ambient temperature at the moment which makes the pressures in the system drop, not necessarily due to shortage of refrigerant. If you leave the car ticking over for a while so that underbonnet temps are high, then switch on the A/C, it may not cycle as much. Don't forget, you should run your A/C at least once a week for about 5 minutes as the carbon seal in the compressor will begin to leak otherwise. Chris

Mar 15th, 2004, 17:07	#10
Cypher007 Master Member Last Online: Jan 8th, 2024 14:20 Join Date: Dec 2001 Location: Lincolnshire	RE: aircon cycling. i counted the seconds today and its more like 10s. wierd thing is it didnt do this when the weather was cold. __________________ Volvo 854 T5R Yellow 1994 Aquamist 2D (Don & Aquamist) BMC panel filter (Don) Ferrita Cat Back (Don) Denso Iridium Spark Plugs (Hong Kong) PowerFlex Top Engine Mount (?) PowerFlex Wishbone Bushes (Elk Parts) 302mm front brake upgrade Goodridge front hoses (rears to be fitted later) 600W Inverter (ebay) History: 1991 Volvo 340DL (1982) 1994 Volvo 360GLE (1989) 1999 Volvo 360GLT (1988) 2002 Volvo 850GLT (1991) 2004 Volvo 850T5R (1994)

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