Fan blades and fan clutch

1997 BMW 540I
175,000 MILES • 5.5L • V8 • 2WD • MANUAL
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56WEDGE
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I have had my fan blade explode three times in under ninety days. First time my fan and fan clutch was replaced. Second incident the motor mounts were replaced. Now the third time, new fan, radiator, upper radiator hose. What is could be causing this? My shop is stumped. No answers or guarantee that it wont happen again. All three times I was starting from a stop. In first gear, not accelerating hard at all. Twenty feet them boom.
Dec 18, 2018 at 11:14 AM
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STRAILER
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Yep, it sound like the drivers side engine mount has separated allowing the engine to raise up which will contact the fan blade to the shroud. You can confirm by looking for rub marks at the underneath side of the top of the shroud. Please let me know. Cheers, Ken
Dec 19, 2018 at 12:57 PM
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56WEDGE
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Ken, thanks for the response. I'm still concerned. Both engine mounts were replaced after the second incident. The most recent - the third time was with the new engine mounts installed. Any additional thoughts?
Dec 20, 2018 at 5:03 AM
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STRAILER
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Can you check for contact around the fan shroud, its must be hitting something. Also try to brake torque the car with the hood open to see if the engine moves around. Both forward and reverse.
Dec 20, 2018 at 9:44 AM