Club Lexus Forums - View Single Post - Excessive engine noise.....from engine cooling fan?

I6turbo · 06-25-09, 08:46 PM

If it really seems abnormally loud compared to other vehicles, you should check (or have someone check) the fan clutch. I live in Florida and I've never heard mine making an unusually loud roaring sound. Typically the "large truck like roar" is caused by the fan clutch being fully engaged and causing the fan to spin a a much higher speed than it normally would for a given engine RPM. I've had other vehicles with a failed fan clutch (locking up too much) and they roared in a manner that I'd describe as you have here.

06-25-09, 08:46 PM	#7
I6turbo Lexus Test Driver Trader Score: (0) Join Date: Jun 2005 Location: F Posts: 1,137	If it really seems abnormally loud compared to other vehicles, you should check (or have someone check) the fan clutch. I live in Florida and I've never heard mine making an unusually loud roaring sound. Typically the "large truck like roar" is caused by the fan clutch being fully engaged and causing the fan to spin a a much higher speed than it normally would for a given engine RPM. I've had other vehicles with a failed fan clutch (locking up too much) and they roared in a manner that I'd describe as you have here. __________________ 2005 LS430 Flint/Black -- 19" LE37's, Tein CS, Tint 2003 GX470 Ash Blue/Charcoal -- Can't figure a way to improve on stock 1995 Supra T Black/Tan -- 24K miles, 900HP w/supporting mods 2007 Audi A3 - 2003 LS430 - 2001 BMW M3 - 2001 M-B CLK430 (<- all sold)