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My 2001 BMW CI has a funny noise that sounds like a wheezing, whineing, sound. Can you tell me what this might be? I have checked the belts, changed the filters, and checked the vaccum lines. HELP Please
Under what conditions does this sound occur? Idle, at speed, under accelleration, braking .... etc.? More detail in the specific cuonditions under which the symtoms occur, will help to narrow things down.Under what conditions does this sound occur? Idle, at speed, under accelleration, braking .... etc.? More detail in the specific cuonditions under which the symtoms occur, will help to narrow things down.
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First off, have a good look at the engine and the a/c, try to find any leaked fluids or stains, could find the problem. If you hear a hissing or wheezing sound it may simply be a gasket or tiny hole in a hose / vacuum line. Open the hood while at idle, see if you can echo locate the noise ( with and without a/c.running) Be careful to avoid the belts and fans. If you still can't locate it. The only other thing that comes to mind is the belts themselves, if one is worn of frayed it can make a noise every time it passes over a pulley. One last thought, make sure you're using the right octane gas, too low and the engine will knock and / or tick. Hope some of that helps you, Grim
A high pitched whine like that indicates a bad bearing. Water pump, power steering pump, accessory belt slipping, alternator bearing, or in the worst case scenerio, Transmission pump.
This could be a stuck Bendix gear. The Bendix gear is the gear that engages with the flywheel on the engine when you start the car, and if it hasn't retracted it will whine.
The serpentine belt is the most common cause for whining sound when accelerating, try to understand if noise is coming from serpentine belt.
Also check power steering belt under steering column, and also the rotor and chain, thei do not make whining noise , but can make noise when accelerating.
Under what conditions does this sound occur? Idle, at speed, under accelleration, braking .... etc.? More detail in the specific cuonditions under which the symtoms occur, will help to narrow things down.
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