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