M119 cooling upgrade? (Running electric fans sooner)

[Goran124]

Hi,
I have upgraded cooling system on all my E36 AMG cars, new thermometer housing with screew for air bleed, thermometer that opens on lower temp and 1 kiloohm resistor on temperature sensor to make fans kick in sooner…
And i really satisfied with result.

Now i would like to put resistor on sensor on my M119 cars so fans kick in sooner, does anyone know how to connect resistor on which senzor? Look at the pic.

Thx

 

[gsxr]

Search for "Cool Harness" to find the information you are looking for.

As I've explained in the past, I am NOT a fan of this modification on the 124 chassis, including the 034/036. If the cooling system is in good condition and viscous fan clutch is engaging properly, there is no reason the very loud electric fans need to run on high speed. Depending on the exact resistor selected, you can also end up with the electric fans never shutting off after they turn on high speed. Another negative, in cool weather with the heater engaged... the auto climate control will ramp up the fan speed on "auto" setting before heat is available - blowing cold air when you want heat. A couple cars I bought had this resistor / CoolHarness modification and I ended up removing it.

If you want better cooling, replace the mechanical fan clutch with a factory MB PWM electric fan from a mid/late 2000's model and use the MicroAutonomations controller. Search the forum for details on that as well.

 

[Goran124]

I know what you mean, but i have over 20 collectors cars, and once a month i drive each one of them.
When i drive E36 AMGs and outside is 35-40 celsius temperature gauge stays in the area between first line above 80C mark(i think that line is 100C) and 120C…and i end up watching at it all the time, i dont feel comfortable.
After i have upgrade cooling on those cars the temperature gauge is allways between 80c and first line above(100C) and it is much more relaxed to drive…i just feel better.
Thats all.

I dont drive them during winter, maybe on really dry and hot sunny days…so heating is no problem for me.

Thank you for the help.

 

[gsxr]

If the engine temp is consistently above 100°C (the unmarked line)... and anywhere near 110°C something is wrong with the cooling system.

If running the electric fans makes a difference, that means there is inadequate airflow, which means the viscous fan clutch is not working as intended. Making the electric fans run is a Band-Aid, not a fix. But, it may help out on some cars, if you don't mind the noise. I don't like the loud fans running all the time.

 

[Goran124]

The cooling system is perfect, all is like new, M104 3.6 just run hot on 40C, they are just like that and that is all good. Mercedes made them like that but i just dont like it…