AC works most of the time

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Jul 10, 2007 | 11:26 AM

Dainos

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AC works most of the time

My AC stops cooling sometimes.It does not need to be recharged(I think).Any possibly explanations?Is there a relay for the AC or something I can replace?

Jul 11, 2007 | 01:56 AM

JPN

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Joined: Sep 2006

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From: IPS, MA

RE: AC works most of the time

Hello,

I would make sure that the system pressure is not dropping. The original evaporator on 850 is guaranteed to fail so it may be leaking from there. If the evaporator is OK, the compressor may have to be re-shimmed. Here's an instruction:

https://volvoforums.com/m_34431/tm.htm

If the compressor is turning on & off intermittently, I suspect the evaporator is leaking. You could either buy an aftermarket recharge kit that has a pressure gage (approx $30-$40), or have an auto AC shop do a leak test.

I hope this gets you started.

JPN

EDIT: The specified AC system pressure for 850 is 25-33PSI.

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