Fan clutch is also new...i can hear the fan roar when accelerating, and i can tell that is disengages at the higher rpm as it should....

About the aux fans, are both supposed to engage at the exact same time, or does one start before the other one? because i think one of mine starts slightly later especially when the engine is not very hot (such as engaging the ac while engine is still relatively cold)...........

I am going to take them out and clean the contacts and all just to be sure.....

thanks

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1993 300E, 2.8 M104 .....