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re: Update at bottom: Another A/C problem (car this time)

Posted on 7/7/18 at 12:17 pm to
Posted by ScottyB
Member since Apr 2016
39 posts
Posted on 7/7/18 at 12:17 pm to
these compressors are variable displacement compressors and dont have clutches like most mb in the last 15 years. 140psi on both side shows the compressor isnt working. also it could be 140 due to heat, pressure rises with heat, or it is over charged
Posted by windmill
Prairieville, La
Member since Dec 2005
7024 posts
Posted on 7/7/18 at 12:41 pm to
I wondered if it was a VD unit or not. The diagnosis remains the same in this instance.Thanks for that clarification.
Posted by HotKoolaid
Member since Oct 2017
444 posts
Posted on 7/7/18 at 5:49 pm to
quote:

these compressors are variable displacement compressors and dont have clutches like most mb in the last 15 years. 140psi on both side shows the compressor isnt working. also it could be 140 due to heat, pressure rises with heat, or it is over charged


This compressor has a clutch. I bet it's the same factory Denso that's in the ML350.
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