Hello,

I have read and read butt I am not clear on how to diagnose faulty fan clutch.

Car is 1986 300E about 260k miles. Car gets hot at rest, fine moving -- temp comes down as soon as car is moving above 30mph.

I have a 1992 wagon with no cooling problems to compare (different fan and clutch I think.)

1) This morning with both cars cold the 1992 fan was stiff -- no free spin. The 1986 was stiff but had 1/2-2 rotations of free spin.
2) Started cars and both seemed the same.
3) After running 30-60 seconds both had free spin when shut off -- the 1992 free spin longer
4) Same after sitting about 2 minutes -- same as before cars were started.

The 1986 was slightly less stiff dead cold -- is this anything that can lead to a conclusion?

Further info -- radiator is cracked and will need to be replaced. So I may do clutch at the same time.

Thanks

thanks.

__________________
David
1986 300E Anthracite + ECodes + MB Mileage Award