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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% [387 Votes]

150,000mi - 200,000mi
150,000mi - 200,000mi
25% [453 Votes]

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

250,000mi - 300,000mi
250,000mi - 300,000mi
10% [184 Votes]

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

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

Votes: 1839
You must login to vote.
Started: 03/14/2011

Polls Archive

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» W124-Zone.com » Technical Issues
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Cool Resistor?
cbc atl
Thinking of soldering in one of those resistors into the coolant temp sensor connector to make the electric fan come on a little sooner. It is supposed to help keep it cooler and seems simple enough.

Have you had any luck with this or have any advice?
 
ps2cho
In my experience, the electric fan shouldn't even be turning on if the cooling system is functioning properly, aside from A/C operation. I recommend looking at the cooling system first....The cool resistor is a bandaid fix and nothing more!

My 260E was overheating after the water pump blew. I replaced both the water pump and radiator with new OE parts...the car never gets much over the thermostat close point of 79C. With A/C in 115F, it hits maybe 90C tops in traffic. Proper option requires no electric fan.

Have you checked operation of the fan clutch? Does it lock up properly?
1988 Pearl Grey Metallic Mercedes 300TE - 114,000mi
1987 Black Mercedes 260E - 92,500mi
2002 Silver CLK320 (Girlfriends) - 104k
w124-zone.com/downloads/photos/260E/AMG_Gen_I/side1-sig.jpg.www.w124-zone.com/downloads/site/wagon-sig.jpg
 
http:///www.w124-zone.com
cbc atl
Thanks for the help. The fan only came on a couple of times last year, once after running it pretty good then stopping at a drive through and idling and it was hot outside.

I am going to be in more stop and go traffic this year and thought it may help overall.

I was hoping for cooler A/C in the summer heat as well with the cool resistor as it could be parked outside more too. It has been converted, only looses a bit of R134a each year and keeps it cool when first parked inside the garage and out of the sun.
Edited by cbc atl on 02-28-2011 07:29
 
ps2cho
cbc atl wrote:
Thanks for the help. The fan only came on a couple of times last year, once after running it pretty good then stopping at a drive through and idling and it was hot outside.

I am going to be in more stop and go traffic this year and thought it may help overall.

I was hoping for cooler A/C in the summer heat as well with the cool resistor as it could be parked outside more too. It has been converted, only looses a bit of R134a each year and keeps it cool when first parked inside the garage and out of the sun.


I would look into a relay mod that turns the aux fan on at all times when the A/C is on. This would benefit you in both ways. My 260E has it...looks like it was a dealer update when they converted the car to r134a (I have since went back to r12 though). I am looking to do the same to my 300TE since it works out so well at keeping the A/C cooler at idle.
1988 Pearl Grey Metallic Mercedes 300TE - 114,000mi
1987 Black Mercedes 260E - 92,500mi
2002 Silver CLK320 (Girlfriends) - 104k
w124-zone.com/downloads/photos/260E/AMG_Gen_I/side1-sig.jpg.www.w124-zone.com/downloads/site/wagon-sig.jpg
 
http:///www.w124-zone.com
cbc atl
Went ahead and installed the resistor; just wrapped each end around the slits near top of the 2 pin connectors, put them back into plastic housing, connected to sensor and it works fine. The fan comes on well below 100 degrees.

Have some extras if you would like to try, just pm me a p.o.box.
 
krolik
I wouldn't necessarily call the resistor mod a bandaid fix...it sure helps when you're in a relatively congested area and those engine temps start to creep up. I have had the resistor mod on my CE for about a year now and it's absolutely fantastic.
 
LongRider
What type resistor is needed?
LJP, MSME, ASME
 
Woolacott
So here let me clear to you just one very important and for your kind of information that I am not blacklisted. With that information also not is the spammer to simple to write best essay is my hobby and you can’t make it in the wrong path.
 
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