So I've been driving with the supplemental fan off since I bought my car. After inspecting the temp switch, I noticed that it was unplugged. Now I know why it was unplugged. The fan does it's thing normally but randomly it starts to shake and stutter. It's a really crazy LOUD sound. Very chaotic! If I shut the car off then back on, the fan goes back to normal. Then after a while it's back to insanity.

I just removed it to inspect it. It doesn't seem like its damaged. There isn't much play to it. You can see where the fans have been rubbing on it's frame.

So do these fans have variable speeds? Like the hotter the car gets the faster it spins. Just wondering if that's the reason why it was normal one second and the next it was hell on earth.

Are these fixable? Is it worth taking apart?

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1984 300td euro turbo

Some MBs of that vintage have a 2-speed fan. Low speed triggered by the AC system high pressure switch, high speed triggered by a coolant temp switch. I think your car only has the AC system switch so it would be single speed.

Sixto
87 300D

Going,Going,..

There are DIY Tutorials on dis-assembling and replacing the bearings with
2RS (Rubber Sealed on both aspects[Fore and Aft] ) units available in the
Advanced Search section.

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'84 300SD sold
124.128

Here is a good thread on rebuilding the fan motor.

Aux Fan Maintenance


Charlie

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

w123 has a single speed fan only triggered by the A/C Refrigerant Temperature Sensor.





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1983 123.133 California
- GreaseCar Veg System