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850 Rescue

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

JimBee
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Year and Model: 93 and 2 96 850's
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JimBee

Re: 850 Rescue

Post by JimBee » Fri Aug 03, 2018 5:46 pm

Make sure your dash HVAC controls are correctly set: both heat/cool dials all the way to cool; recirculate switch on; on/off switch should be "on" position (LED out).

Also, there are 2 relays under the dash, on the HVAC unit; either could be bad. If your a/c clutch is set right and your system is properly charged, and you can jump the compressor so you know that it works, then your in-cabin controls like I describe above would be suspect.

The 2 relays are kind of expensive, worth a trip to the junk yard if you have one nearby. I don't think they're have a high failure rate, so junk yard finds are likely to be okay.

Jaybar
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Year and Model: 95,97 850
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Re: 850 Rescue

Post by Jaybar » Fri Aug 03, 2018 8:53 pm

OK Thanks will get it done was trying to do it in driveway, but that doesn't appear to be the case. Maybe I should get the equipment I am not afraid just not educated.

Jaybar
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Jaybar

Re: 850 Rescue

Post by Jaybar » Fri Aug 10, 2018 7:29 pm

The problem is i tried the ac pro like i did on my 97 and it just pegged the gauge . So I went out and got the proper tools, gauges, vacuum pump but the high side needs an acme fitting? I want to evacuate the system and start from scratch with some dye. The only other thing I was thinking of trying is AC pro and keep unplugging the pressure sensor to get the compressor to suck in the refrigerant.

Jaybar
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Re: 850 Rescue

Post by Jaybar » Tue Aug 28, 2018 9:50 am

Update sorry it only draws from the battery I thought it was catching but no luck. So I removed it but one of the brackets would not come free and broke the bracket and I think it's part of the alternator assembly, went on volvo web store could not see this bracket. It ties the alternator and A/C together. Any hints part numbers or I will bring it down to the stealership.

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abscate

Re: 850 Rescue

Post by abscate » Tue Aug 28, 2018 12:10 pm

Its a cinch on a rescue P80 Volvo the evaporator is rusted out - especially in climaty New England.

Its about 10 hours to get the dash out and replace it, and about $300 in parts.

Then you get a dreamy high end climate system.

If you try the $15 bottle of sealer first, the job will escalate to $1015 in parts
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1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
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