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1995 R129
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101 Posts
Discussion Starter · #1 ·
How can one determine if the fan clutch is going bad and does the speed that the fan blade turn related to how fast the serpentine belt turns? I am wondering why my coolant temp. seems to stay 100 degrees at idle even though when driving it goes to slightly above 80. I've just put on new water pump, thermostat and radiator. Fan turns on but it seems to move awfully slow. Thanks for any suggestions
 

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Departed 1998 SL500 (and the Pano is in Bogota)
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12,182 Posts
If the fan speed is slow, sounds like the clutch is bad. When it is hot and with the ENGINE OFF, can you spin the fan easily ?
 
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