A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

Air Conditioning question

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Old Jun 14, 2006 | 04:23 AM
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iVTEC Yo(ex-B5er)'s Avatar
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Default Air Conditioning question

I had my evaporator replaced 2 years ago. I've been driving around recently noticing that my AC is getting warmer every day now.

Is there another part of the AC system prone to leaks? I'm going for a shot of freon this week or next, but I'm just puzzled as to why the car would be leaking freon if it has a relatively new evaporator and that's the problem spot.
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Old Jun 14, 2006 | 04:44 AM
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CK:1.8T+Rabbitâ„¢'s Avatar
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Default Is your compressor running? They fail as do the clutches on it.

There is also plumbing where the R-134a(NOT freon) can leak. A qualified A/C shop can find the leak and repair. If that's not it, might be the compressor or something electronic. Check your A/C lines too by the RF shock tower. One should be ice cold. That's the supply line to the condensor.
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Old Jun 14, 2006 | 05:01 AM
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Default have 'em put a dye in the system to help pinpoint the leak...

other than the evap core though, I can't think of anything else that's known to die on these other than the compressor
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Old Jun 14, 2006 | 06:58 AM
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iVTEC Yo(ex-B5er)'s Avatar
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so how much $$ are we talking? I'm almost at my wits end with this car now
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Old Jun 14, 2006 | 08:47 AM
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Default Compressors are not cheap. Determine what the problem is first.

VAG the car's climate control. Check to see if the compressor comes on when you press the snowflake, etc. You need to do some more diagnosis. If the system is healthy, it shouldn't leak refrigerant.
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