The whining noise happens at 110 km/hr (+/- 5 km/hr) only when the gas pedal is pressed /held. Let gas pedal go and noise goes away. Why? What may be the issue?
SOURCE: when pressing the gas pedal the engin will make this metal clink
HAVE THE DRIVESHAFT UNIVERSAL JOINTS CHECKED FOR EXCESSIVE WEAR, THEY CAN MAKE THIS TYPE OF NOISE.
SOURCE: 2004 nissan pathfinder fan noise
I had the same problem in my Pathfinder a couple months ago. It's most likely your fan clutch. I had mine replaced, and the noise went away. And it seems that it is the cold weather causes this.
SOURCE: High pitched electronic/dentist drill sound when accelerating.
Probably the front differential, your probably hearing the famous differential gear whine. Change the oil, put Lucas for gears in it. You can get a hand operated oil pump to **** it out through the dip stick if it has one. Then fill it with the recommended amount.
SOURCE: high pitched squealing noise when i start engine
One of the belt should be loose or worn. Make sure they are not worn or cracking before tightening.
SOURCE: Low growling noise in front end
typically, this sounds like a wheel bearing. To test, the noise can often be altered by accellerating /decelerating, and more evident by turning the vehicle.
The truning process is to put load on one side, then the other. if the right side has a damaged bearing, for example, the noise would be noticibly altered (less in this case) when turning to the right. Load would be slightly less. Testing speed in the area of 25 to 35 mph.
doc
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