Under the hood, where does the sound seem to come from?

My A/C compressor that lost it's clutch bearings started out like that when the compressor was off, then it did it all the time.

Also check the alt bearings, the water pump, power steering pump, and the vacuum pump

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RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

99 W210 E300 Turbo Diesel, chipped, DPF/Converter Delete. Still needs EGR Delete, 232K

90 Dodge D250 5.9 Cummins/5 speed. 400K

Gone and still missed...1982 w123 300D, 1991 w124 300D