Re: When I accelerate there is a rare noise in the...
Remove spark plug wires one by one if on any cilinder wire that you remove the knocking stops you will know its the big end bearing or a small end thats causing it. You can drain your oil and if you find metal pieces in it you know its the bearings.
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98% sure you have an axle problem. Might be wheel bearings depending on the sound. Bad axles will make a loud clicking noise, (click click click in rapid succession, espically while turning or under accleration) while wheel bearings will make a growling sounds.
A noise is pretty tough to diagnose via e-mail. It could be any of the u-joints, differential, output shaft bearIng/bushing(transmission). I like put the rear axle on jackstands and run the truck in drive at idle and then I use a piece of 1 inch heater hose about 3 feet long as a stethoscope. Put one end against your ear and the other in the area of the noise to pin point the offending part.
uh oh, this may not be good. If the sound you hear is actually a "knock" sound that only occurs under hard acceleration, it is quite possible that a main bearing on the crank or connecting rod bearing for the piston is going bad. If so be the case, have this issue addressed ASAP because a failing bearing will not last that long at all...and when the bearing fails, your motor stops.If it is still under warranty take it to the dealership immediately to have the problem fixed.
it could be a u joint hard to tell.it could be in the rear end(differential).if you accelerate and the noise is there then this indicates a ring gear to pinion gear problem or if its there but not as noticeable when at a steady speed then it sounds like differential bearings.if you hear it when turning then it could be axle bearings.
a whirring sound can be a bearing on a component under the hood.(power steering pump,alternator,idler pulley bearing,etc),it can also be a serpentine belt from a worn belt or belt tensioner a cv joint won`t make a whirring sound(it will cause a clunking noise or a vibration).
You probably have a bad hub bearing.If you can change the noise by slightly turning the vehicle one way or the other it is a hub bearing.If you turn left and the noise is still there then it is the right front bearing.If you turn right and the noise is still there it is the left side.If it makes the noise both ways it could be both front hubs.Hope this helps.Good luck.