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Old 08-26-2021, 12:49 PM
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Join Date: Mar 2009
Location: San Diego
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Quote:
Originally Posted by leathermang View Post
I think the FSM says to charge at ' high idle ' ...
If you have any leak you can figure you have sucked some air / moisture / into your system. That moisture mixes with your refrigerant and oil and creates acid.
That acid can eat through important parts of your system you would never want to have to replace... like your evaporator under your dash.
There is a long AC thread that used to be a sticky..... if you search for ' flush' using my name in the advanced search it should show up. I think 80,000 something views.
Please define "high idle'.

No moisture will be sucked into the system when charging due to the higher pressure in the system than atmospheric. Moisture would only get in when the system has a hole and was depleted. Whatever moisture was there will still be there. That is why you need to vacuum the A/C for a new or opened system.

Any rpm would be OK. I don't think it makes any difference except in time. Do whatever you been doing if it works.
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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

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