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Premium Member
2007 SL55 AMG P030 -2007 S65 AMG
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268 Posts
Discussion Starter #1
I replaced the compressor (new), expansion valve and dryer on a 2008 SL550. I used a Robin Air 34778 to recover, vacuum, leak test and charged 2.03lbs of Freon 134A.

I get 60 degrees F out at the center dash but should get 40-45 degrees F.

After the install I get 60PSI on the low side and 150PSI on the high side it should be 30 & 230 so what is issue?

Bad compressor, blockage in high pressure line any comments, hints would be appreciated.

Happy motoring
 

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Coupe/Convertible Forums Moderator
CURRENT: 2011 SL550 FORMER: C300, ML350, CLK550 Cabriolet, C240, ML320, 300TD
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20,034 Posts
That sounds like a compressor issue to me. Usually when it's the dryer or the expansion valve, the pressure is good, but the evaporator doesn't get a good flow of refrigerant.
 

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Premium Member
2007 SL55 AMG P030 -2007 S65 AMG
Joined
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268 Posts
Discussion Starter #3
That sounds like a compressor issue to me. Usually when it's the dryer or the expansion valve, the pressure is good, but the evaporator doesn't get a good flow of refrigerant.
Thanks for your reply, yes I'm thinking the same thing so I'll get a replacement under warranty from O'Reilly.
I've had compressors from them before and had no issues. I'll report back when I get done.

Best H
 
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