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Member Poll
How many miles on your W124?

0mi - 50,000mi
0mi - 50,000mi
5% [88 Votes]

50,000mi - 100,000mi
50,000mi - 100,000mi
10% [184 Votes]

100,000mi - 150,000mi
100,000mi - 150,000mi
21% [388 Votes]

150,000mi - 200,000mi
150,000mi - 200,000mi
25% [454 Votes]

200,000mi - 250,000mi
200,000mi - 250,000mi
18% [337 Votes]

250,000mi - 300,000mi
250,000mi - 300,000mi
10% [185 Votes]

300,000mi - 350,000mi
300,000mi - 350,000mi
5% [86 Votes]

350,000mi +
350,000mi +
7% [120 Votes]

Votes: 1842
You must login to vote.
Started: 03/14/2011

Polls Archive

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» W124-Zone.com » Technical Issues
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A/C Condenser Fan
Although it may seem trivial, a perfectly working A/C Condenser Fan is vital for a cool air conditioning system. That's why your car has to have one, too. If your car's air conditioning unit won't cool the cabin down, a broken A/C Condenser Fan might be causing it. A/C condensers are responsible for cooling down the refrigerant that passes through it using the cool air that the fan feeds it. This causes the gases' temperature to drop significantly. This phenomenon helps cool the air inside the car's cabin. While there is air that passes through the condenser, it might not be enough to effectively cool the refrigerant and might cause the air conditioning unit not to function efficiently.

I think I have a broken a/c condenser fan which affects the air conditioning unit of my car. Does anyone know how to perform a manual installation? Any advice would be appreciated. Thanks!
Are you sure it is broken? At stock, the fan does not come on until A/C pressures exceed a certain value.
1988 Pearl Grey Metallic Mercedes 300TE - 114,000mi
1987 Black Mercedes 260E - 92,500mi
2002 Silver CLK320 (Girlfriends) - 104k
First, please list make, model, engine, and any other data to help id your vehicle All are different, and have different components.
There are two ways to solve your problem, one is to troubleshoot your existing system, find the problem, and replace the defective components. For instance a burned out fan motor may burn up a pre-resistor, or the relay, some of witch have a non replaceable fuse, others have a replaceable fuse on the relay, My 300E has two relays for aux fans, with 2 speeds. One when ac pressure is high, the other when coolant is hot.
The other is to buy an aftermarket fan, fabricate a quality mounting bracket, provide a 12 volt circuit with proper size wire, overcurrent device (fuse) relay to turn it on /off and a device such as a pressure swith on your ac receiver, to activate your relay. There is already a switch on your ac receiver. wired into your existing fan relay with fuse and existing wiring to run a fan. Start with car info.
Brandon, Without knowing any info of your car I researched aux fan electrical circuits.When you are ready to start troubleshooting your fans, I will be glad to help but it will be a little slow. Maybe we can fix your problem before you need AC. All info I have accessed regarding your problem is in the electrical diagrams of this web site's factory service manual. Of course if you want, we can install an electric fan with automatic control based on AC pressure.
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