Hello,
I've recently replaced my lower a/c hose near the front of the car (83 300D) and had the system recharged with r134. A/C has been working very well until the last 2 days. On my morning commute to work, if I have the blower fan set to low or auto, the blower will turn on for a few seconds and then turn back off. This has repeated itself throughout the drive. It seems to stay on if I use the high setting. I don't recall having a problem in the afternoon when the car is very hot. I know that my hose needs to be replaced to the sensor in the dash. Would this have any impact on this problem and why? Any other ideas on what to check? Thanks!!

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Scott

1983 300D Turbo

if you kick it and it goes on its the motor brushes

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1981 300SD 512k OM603

Just discovered I have a coolant leak which has been slow but steady over the past few days. I'm going to replace the hose, refill and recheck for the problem. I'll bet that may have something to do with it.

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Scott

1983 300D Turbo

its probable your fan blower regulator is going bad.

I had a very similar problem in my w124.

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Eugene

10 E63 AMG
93 300te 4matic
07 BMW X3
14 Ford F-150 Fx2

It nay be the brushes, but when they get real low, they'll draw more amperage and you'll start blowing fuses, but it should be easy enough to pull it and check.
The other thing that comes to mind is a failing CCU, cold solders.

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83 SD

84 CD