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  #16  
Old 07-12-2003, 05:17 PM
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Join Date: Jan 2002
Location: Sacramento, CA
Posts: 132
I removed the clutch fan on my C43 5 months ago and it has not caused any sort of problems or overheating at all.

In fact here in Sacramento, CA it has been 103-105 degrees the last few days and the water temp stays steady at 90 degrees C.

With the clutch fan removed you lose all that weight hanging off the water pump which must help preserve the water pump bearings and seals. And it does free up some Hp.

Jeff
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  #17  
Old 07-13-2003, 01:41 AM
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I don't know whether your C43 is the same as W210 E classes, but Mercedes designed a buffer in the temp gauge of W210's so that the gauge stays at 95 degrees when the temp goes between 95 and 115 derees celsius.

Your temp might be fluctuating, but you wouldn't be aware of it by looking at your gauge.
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2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".
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  #18  
Old 07-13-2003, 03:59 AM
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Join Date: Apr 2002
Location: Surrey, Uk
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Removing the fan altogether is probably OK if you have A/C installed, as the electric fans will come in when required.
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  #19  
Old 07-13-2003, 03:45 PM
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Quote:
Originally posted by tkamiya
Suginami, where did you hear that W210s have the buffer built in?
The Technical Editorial in a previous issue of The Star Magazine.

"The display is a plateu display - the pointer stops at approximately 95C at temperatures between 95C and 115C. Temperatures in this range are not considered critical. The correct temperature is only displayed again from a temperature of 116C. This prevents the drivery from being disturbed by excessive needle movement in the display. The warning range starts at 116C.

The coolant temperature signal comes from the engine control module, and the guage is activated by a stepper motor."
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2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".
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  #20  
Old 07-21-2003, 03:12 AM
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Join Date: Jan 2003
Location: Sydney, Australia
Posts: 627
I find that the engine driven fan with viscous coupled clutch in our 300TE (M103) works just fine. It only engages at higher temperatures and lower engine speeds. At times when every bit of engine power is needed to drive the car the fan would not be coupled anyway.

The engine driven fan in the 190E (M102) is an entirely different matter. It is coupled with an electromagnetic clutch which means it is either engaged and running at a speed proportional to engine speed or not running at all. Whilst driving at normal speeds it is not usually engaged. In traffic in hot weather the engine temp will rise to about 100 C and the clutch will engage. At idle the fan speed is barely sufficient to give any cooling and the temp will not drop or may even continue to rise until the electric aux fan cuts in (at around 105 or 110). When the traffic then begins to move the engine driven fan will roar as engine speed increases, considerably loading the engine. In all, no where near as satisfactory an arrangement as a viscous coupled fan. If it were possible I would fit such a fan and clutch. As an easy alternative, I am experimenting with swapped connections at the temperature switch on my 190E. This allows the electric aux fan to come on first at about 100 C, quickly dropping the temperature until the fan switches off again (at around 90, I think). The compromise mechanical fan (inadequate low speed cooling and too much high speed noise and drag) should only ever be required when things get really hot. It's winter here now so I'll have to wait for next summer to see if this is a better arangement but from autumn (fall) when I did the mod up until now it appears preferable. If it is the way to go I would also like to modify it such that only the electric fan operates with the aircon rather than both fans as is currently the case. This would prevent the mechanical fan roaring and causing noticeable engine loading as it cycles on and off with the aircon.
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