Hi all,

After waiting in line for a couple of drag runs over the weekend I noticed that my engine temps were climbing up a bit and felt that it would be better to upgrade the fans.

Usually the coolant temperature when on cruise sits at around 60c, it does rise up to around 85c when accelerating or in slower traffic conditions around town but it has been up around 93-94c.

I know that there is the large viscous fan passively cooling the engine and I believe starts to work at around 90c when the viscous clutch engages, however I am wanting to have something a bit more reliable.

I am therefore thinking about either swapping out the front aux fans or indeed adding a manual override switch to allow them to be turned on independant of the relay. I have tried to test the fans by using the test procedure of pressing both the Auto buttons in however I have no joy in them working.

I would therefore assume that there is an issue with the pusher fans on the front of the car so I am tempted to just bypass them manually or get them to function when the car gets over 90c. I am aware that they aren't the best design, however should push some air through the system when active.

Has anyone retrofitted anything or modified their setup at all?

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UK spec Mercedes W210 E300 Turbodiesel wagon - OM606.962 with 722.6 transmission - rust free!