Question about Cars & Trucks
Most likely a tensioner pulley bearing(the smooth faced pulley)
I would remove the belt and see if the noise is gone.
A wooden dowel or long screwdriver held to your ear is a
good way to find the noise,just put it on the metal and be
Posted on May 04, 2013
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Posted on Jan 02, 2017
Don't know what the "whirring" is, but you NEED to find it. The only reason your temp. goes down at higher speed, is cuz more air is rushing past your car, cooling the engine and radiator. Careful you don't burn up the engine! Find the cause of the overheating, probably related to the sound you hear, or caused by overheating, even maybe causing the overheating. Take your time and work on it or have it serviced. Start by checking your coolant level. Good luck.
Posted on Oct 28, 2011
You could pull the serpentine belt and run the engine to see if the noise continues. The bearing for one of the pulleys could be failing, including the water pump and alternator.
It could also be the fan and fan clutch on the water pump.
Posted on Aug 28, 2012
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