E320 A/C warm except on freeway
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Joined: Jun 2015
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MB E500 4MATIC
It was done in a garage so I didn`t see everything but for sure you dont have to change the compresor it`s a valve which stay in compressor and to remove the valve I think you have to take out the refrigerator gas and the ther is a circlip which hold the valve to the compresor unit.
---was yours internal or external or did you have to change the complete compressor
Newbie
Joined: Jun 2015
Posts: 6
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MB E500 4MATIC
Thread Starter
Junior Member
Joined: Nov 2012
Posts: 30
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2005 E320
Valve
That's about what they cost here. Let us know if that did not fix it. Mine was very flaky for awhile-would work for several days, then just quit. It's been off much more than on lately.
Thread Starter
Junior Member
Joined: Nov 2012
Posts: 30
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2005 E320
AC Problem fixed!
From another forum-read this thread:http://www.benzworld.org/forums/w211...c-issue-2.html
I would like to add that I just did this fix on my wife's 2005 E320 wagon-it all went perfectly. I paid a shop to evacuate the system, popped the old valve out, grabbed a little lube off it, installed the new valve. I recharged it myself without pulling a vacuum on it. It took almost two hours to get the system charged-after getting about 900+ g of R134A into it, the vents are all freezing cold in 90+ degree weather! My car's symptom was intermittent cooling, not necessarily engine speed-related, which seemed to get worse with higher temperatures. Bottom line was, it simply was not compressing when it should-looked for codes, scoped the valve-when I had a good waveform to it, but low and high side pressures were almost the same (around 100psi), I knew for sure I had a bad valve. Got the new valve from Polar Bear Inc.
I would like to add that I just did this fix on my wife's 2005 E320 wagon-it all went perfectly. I paid a shop to evacuate the system, popped the old valve out, grabbed a little lube off it, installed the new valve. I recharged it myself without pulling a vacuum on it. It took almost two hours to get the system charged-after getting about 900+ g of R134A into it, the vents are all freezing cold in 90+ degree weather! My car's symptom was intermittent cooling, not necessarily engine speed-related, which seemed to get worse with higher temperatures. Bottom line was, it simply was not compressing when it should-looked for codes, scoped the valve-when I had a good waveform to it, but low and high side pressures were almost the same (around 100psi), I knew for sure I had a bad valve. Got the new valve from Polar Bear Inc.
