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Air Conditioning Troubleshooting Help

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive P2 platform cars sold as model years 2001-2007 (North American market year designations).

2001 - 2007 V70
2001 - 2004 V70 XC (Cross Country)
2004 - 2007 XC70 (Cross Country)
2001 - 2009 S60
2003 - 2007 S60 R
2004 - 2007 V70 R
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STSCowboy
Posts: 39
Joined: 6 October 2019
Year and Model: 2006 V70 2.5T
Location: San Diego

Re: Air Conditioning Troubleshooting Help

Post by STSCowboy »

You are correct, that’s why I’m trying to find the maximum pressure these units can withstand. It “seems” to be working perfectly from my past experience but I do not want to exceed the systems capability.
2006 V70 2.5T Geartronic Silver Black Leather 131,000 Miles
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jimmy57
Posts: 6694
Joined: 12 November 2010
Year and Model: 2004 V70R GT, et al
Location: Ponder Texas
Has thanked: 4 times
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Post by jimmy57 »

The maximum pressure is about 425 as the ECM will shut off compressor at that pressure. Some compressors have a blow off valve that dumps refrigerant at 440 psi
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STSCowboy
Posts: 39
Joined: 6 October 2019
Year and Model: 2006 V70 2.5T
Location: San Diego

Post by STSCowboy »

Ok, that’s good to know. That way if I notice that the cooling has diminished as engine speeds increase I’ll know I’ve exceeded the pressure limits of the system. I think I’m good to go because the outside temp of the engine compartment was obviously higher than my interior 85*F temps before I turned on the AC.
2006 V70 2.5T Geartronic Silver Black Leather 131,000 Miles
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