Quote:
Originally Posted by cypress
Not sure what model you own. But before you get a new one, you should either short the VFC temp switch's connector or apply 12V directly to the VFC to see if the clutch fan comes on or not 1st.
I am right in the middle of modding my cooling system. Replaced my 87c thermostat to 79c one. Replacing my dual 100/110c temp clutch/aux fan switch to a lower dual 91/99c temp switch to see if sufficient. If not, I will add engine rpm "idle" into the mix.
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I think you might be talking about an electro magnetic clutch and not a viscous clutch. Not much choice with the VFC.
I would be reluctant to drop from 87 to 79c. Most Mercedes I am familiar with are designed to run best at around 87 plus. Unless you reside around South Hades
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