If the noise increases with road speed, whether accelerating or coasting, it is more likely a wheel bearing. I also did the tranny mount too, but again, the noise was done before any work was done on the car. Hence, changing this fluid or refilling it can fix this issue. Whining noise under mild excelleration Hey Dinotheo, I have the same issue with a 2005 FXT with a 2004 STI engine in it. Belt noise can also come when one of the pulleys the belt is riding on starts to fail. Just bought an 01 1500 4x4 5.3 extended cab 122k, my first Silverado. Hello - if the noise increases with the speed of the vehicle, but only while you are accelerating (as opposed to coasting), the problem is in the drivetrain (transmission or differential). This lack of lubrication can appear thanks to leaking fluids for example and will inevitably lead to whining noises when that happens. good day to everyone i just got my jeep last month and been wondering what's the whining noise when accelerating at 100kph and its gets louder until i reach 140kph it stops. I am at wits end, did you ever find out what it was? The serpentine belt is given the proper amount of tension by a device called a drive belt tensioner. When the belt no longer moves smoothly along the pulleys, it makes a noise when the car is accelerating. Gear Grinding Hearing an increase in the level of humming noises or gear grinding is a way of knowing almost for sure that you have a worn out differential. Once I hit 20mph or so there’s a very loud whine when accelerating but is quiet when you’re not touching the gas or if in neutral revving it there’s no noise as well. The grinding noise is coming from the engine bay. If the fluid is too thick or the level of the fluid is too low, a whining noise may occur. Grinding isn’t always the first indicator of a problem, however. Usually the humming gets louder under acceleration. Belt noise can mean the belt is worn or loose. Gets quite high pitched before going to the next gear. Hello everyone! I was up in the mountains week before last and it was down in the teens for temperatures. When I got back to Charleston, I took the car to the dealership to be looked at. Not sure exactly where, but seems from the lower part. At this point, it was doing it when turning the wheel and under acceleration. The whining noise got REALLY loud. Whirring Sound. The other noise you might be accustomed to is that of a loud exhaust system. 1) Bad or Worn Tensioner. A similar concern to grinding is if your car makes a clicking noise when accelerating and turning a corner at high speeds. Golf Cart Making Grinding Noise. I've had my YJ (4.0, AX15, NP231) for about a month now and I've had this annoying whining sound while driving. Grinding Noise. But its for sure there when I accelerate for a little bit. If your golf cart is making a weird grinding noise while it is running, the issue could be due to bearings. it sound like i have a TC or SC. I recommend a vehicle noise inspection performed by a mobile, … It doesn't seem to be related to RPM or speed but rather how far down I press the pedal, whether I'm starting off in 1st or cruising down the highway in 5th. and when i let off my foot on gas pedal, i didn't hear any whining noise and when i let my foot on the gas pedal again, i can hear that noise again. Here are five of the most common reasons your serpentine belt is making noise when cold or accelerating. Noise is audible in 2-4 gear, under mild acceleration, and seems to be tied to the engine RPMs. If you notice your car making a whining noise when accelerating, addressing it early can prevent it from becoming a grind. The tensioner is basically a pulley connected to an adjustable pivot. When I let off the gas the whine almost turns to a grind and goes away until I tap the gas again. Knocking Noise If you hear a squeaking or grinding noise when driving, it’s likely a universal joint that’s damaged or worn. The major concern I am having however is with a light rattling/grinding noise when accelerating between 1000 - 2000 RPMs. Hearing a whirring noise around 10 mph when accelerating or slowing down is likely due to worn or loose pinion bearings. Operating under 40-50 degree temps, the sound was not as bad.