Question about 2003 Volvo V70

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2000 V70 AC gets cold then freezes up. After a few minutes it's fine then freezes up again. What would cause that?

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You have most likely a leak in the pipeline/compressor.
Lack of refr.liquid charge.

Posted on Jul 26, 2008

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How to get AC to blow cold all the time on my 2000 Volvo v70?


You'll need to have someone check the refrigerant charge with a manifold gauge.
If the low-pressure side is lower than it should be but the high-pressure side is normal or showing higher than it should, your orifice tube may be clogged.
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you have moisture in the system this causes your expancion valve to freeze up an stop working, thats why it works for sort time and when it de-freezes stars working again. you need to do a EVAC & RECHARGE with a good AC service equipment, specially attention to pull vacumm por at least 20minutes so you get all moisture out of the system.
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1 Answer

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1 Answer

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I had exactly the same problem. When your engine is cold and off check the gap on your ac compressor with a feeler gauge, it should be between 0.3 and 0.5mm. If it is larger you need to re-shim which invloves undoing a nut on the end off the compressor and removing the clutch plate, then removing the appropriate shims (look like washers) then replace. The reason it blows warm after 10 minutes or so is because the ac compressor gets hot and the clutch gap gets too large for the electro-magnetic clutch to engage. Some people would say that you need a new compressor but all you need to do is a re-shim.

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2 Answers

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