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#7
11th May 2015, 09:27 AM
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My fan used to be noisy all the time, until I had new viscous coupling fitted a couple of years ago. I believe the couplings generally seize after a few years, causing the fan to permanently turn. When the engine's cold (and not running) you should be able to turn the fan easily by hand.
With a properly working coupling, my fan is quiet from cold and quiet most of the time when on the move, even with the engine at full operating temperature. Only in warmer weather or after some enthusiastic driving (or sitting in traffic), does the fan become noticeably loud again.
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Mark ------------------------------------------------------ 2002 FE S8 Ebony Black Pearl ------------------------------------------------------  ------------------------------------------------------ Cars Owned: The Tesla Era: 2020 Model S Performance Ludicrous+ (present) (Black, with all black premium interior and carbon fibre décor, 21" sonic carbon twin turbine wheels and FSD capability) The Audi Era: '97 A8 4.2 (Ming Blue) --> '96 A8 4.2 QS (Dark Green) --> '02 FE S8 (present) The Citroen Era: '84 BX 1.6 RS --> '89 BX 1.9 DTR Turbo --> '94 XM 2.0L Turbo --> '96 XM 2.0L Turbo Exclusive --> '00 Xantia Activa 2.0L Turbo The Banger Era: '76 1.2L Lada VAZ-2101 (Ruski Fiat 124) --> '80 1.7L Morris Ital HL, finished in Ermine White and Rust 
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