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In short my Diesel has a turbo whistle all the time that is normal
Many Diesels make this noise.
Whistles are often wind noise and caused by other than mechanical faults, so this car needs to be shown to a qualified person and have that person figure out the source.
The most common cause of the whistling in a 2003 Impala is a vacuum leak. Any of the lines under the hood could be causing the noise.
If the whistling noise is coming from under the hood its your belt, that's what's wrong with my Sequoia. If its not coming from under the hood its probably a crack in the seem of your window.
The noise can be comming from the weather stripping around the door, the wind passing past the antenna or from the wind around the luggage rack on acceleration.
The rattling and whistling on the 94 Explorer sounds like an exhaust problem. Check the exhaust for any leaks or loose connections.
Perhaps a vacuum leak?
Noise immunity is the ability of a system to perform even when there is noise present. The higher the level of noise a system can still operate under, the higher the noise immunity.
depends on the fuel system, throttle body injection trucks make a whistling noise when accelerating due to high vacuum from the cold air intake
You need to do some detective work to try to help us determine the source. Is it coming from under the hood in the engine compartment, under the car, up front, the rear, the exhaust? Repost your findings.
Vermont.
Take it to the dealer as it's still under warranty.
More information needed. One can only assume that the motor is running with the car in neutral but is the car stationary or moving down the road? If you are revving the motor and have a CAI, you will get a whistling noise either all the time or sometimes. This is completely normal. It happens with SRI but is usually muffled under the hood.
The whistling noise is caused by a restriction in the flow of water that is under pressure. Some faucets that are close to needing rebuilding will whistle as the water is shut off as there is a small leakage occurring.