Volvo S40 The S40 is Volvo's most affordable sedan with all the amenities of a luxury sports car.

07 S40 AC intermittent cold/warm

Old May 30, 2011 | 09:09 AM
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Default 07 S40 AC intermittent cold/warm

I have an 07 S40 that just started blowing intemittent cold/warm. Does anyone know the problem? Also, I would like to view a charging chart, an AC schematic and how many ounces of refridgerant this unit requires.
 
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Old May 30, 2011 | 09:17 AM
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Does it blow cold for a while then just go warm?
There should be a sticker under the hood that tells you how much freon the system holds.
 
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Old May 30, 2011 | 10:19 AM
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Default Intermittent AC

Yes, cold for a while then warm. The compressor cycles rapidly which makes me think it is low on refridgerant. I am unable to locate the high side port (any wisdom on where to find it?).
 
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Old May 30, 2011 | 10:37 AM
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Well check this first when it stops blowing cold check and see if the compressor is running. If it is not then check for power at the compressor. If you have power and it is not running the clutch needs a reshim.
 
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