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Old 07-04-2021, 06:19 PM
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Join Date: Jul 2021
Location: Palos Verdes, CA
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Temp on the car with AC on pictures attached

@christuna so drove her today. AC definitely works slightly better on low fan. Climbed for about 1.5 miles, temp rose as shown in the pic. Normal temp also shown. AC on the whole time. I got home after a 8 mile drive, and the aux fan was not on. I think the first step is a evacuate and recharge and see if that helps with the pressure etc. Any thoughts? Thank you
Attached Thumbnails
W126 560SEC Air conditioning issue cooling on AUTO and HIGH-ee433ef2-fe4a-4fd7-9e76-b598c40d923c.jpeg   W126 560SEC Air conditioning issue cooling on AUTO and HIGH-6b5df120-532a-4ebc-94d4-ed2a56cf7ece.jpeg  
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Old 07-04-2021, 07:13 PM
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Join Date: Aug 2019
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Quote:
Originally Posted by PV560SEC View Post
@christuna so drove her today. AC definitely works slightly better on low fan. Climbed for about 1.5 miles, temp rose as shown in the pic. Normal temp also shown. AC on the whole time. I got home after a 8 mile drive, and the aux fan was not on. I think the first step is a evacuate and recharge and see if that helps with the pressure etc. Any thoughts? Thank you
Your engine temp looks perfect.

Why evacuate? Checking the high and low a/c pressures can tell you a lot about the condition of the compressor and the expansion valve.

They rent ac gauges for free at autozone

Second thing that I would do is probe the a/c compressor clutch and install a light on the dash when the clutch is activated so that you can check if maybe you have an electrical problem sometimes and that the climate system doesn't activate the clutch.
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