You probably have a vacuum leak. Check and replace all of the rubber emissions hoses around the engine.
A defective vacuum line can cause a whistling sound when the vehicle is accelerating. A loose belt can also create a high pitched whistle sound.
This simple question is very complex actually, since we have no idea the context of what you are saying. However we can discuss the various means for engines whistle. An engine could be three things: An engine for a car or an engine as in a train or an engine as in a red indian. Therefore we could have the sentences "The engine (car) whistles every time I go over 120km" or "The engine (train) whistled when it passed us." or "The engine (red indian) whistled to his friends to attack!" In the sentences above the word engine is a noun where as the word whistle is a verb. However if you want to say an engine has a whistle then you would say "engine's whistle." Here its important to attach an apostrophy with a "s" to indicate that the engine possess or owns the whistle. So a sentence could read, "The engine's whistle is rather loud so stand back!"
My answer really won't help. Sometimes it can harm the vehicle sometimes not. If perhaps the calalytic ccnverter is plugged, yes it can damage the engine. Usually if the car performs as normal, no real damage will occur.
The whistle of the mortar overhead was the last thing he heard.There was a whistle from the kitchen, telling him the kettle was boiled.He always liked to whistle on his way to work, which I found annoying. So one day I brought a shovel along to work. He won't whistle any more.
The engine moves the vehicle.
A car does not have two engines. A vehicle only has one engine, sometimes located in the front and sometimes located in the back. The car also has a motor.
A rail road engine
A vehicle's engine is sometimes call a motor. The electric fan's motor stopped working. I want to get a motor bike.
Thomas the Tank Engine and Friends - 1984 Percy's New Whistle 8-2 is rated/received certificates of: Australia:G
Most of the time, a whistle sound coming from the engine is a loose bolt on the air filter housing. It can also be that the fan belt is slipping or the air conditioning pump is not running properly.
Many time the high pitched whistle will be cause by a loose or unattached vaccuum line on the engine.
The engine light can come a vehicle for many reasons. If the transmission is having a delay, it could possible make an engine light come on.