Review my post above, since I had the exact same symptoms.

The reason that at some stage both fans start working is that as your engine heats up further it engages the higher fan speed. This higher speed is strong enough to overcome any drag on the stuck fan. However it is NOT normal for only one fan to operate under any condition.

I should have also mentioned in my reply (above) that after I removed the peeling paint, I tapped the stuck fan's motor lightly with a mallet to dislodge any dirt that may have lodged inside its motor.

Its been 6 months now, and both fans have been working consistently and quietly ever since.

Phil

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'95 E300 Diesel, 264,000 Miles. [Sold it]