Whistling noise?

skarab

Member
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Liquid Platinum 2007 Mazdaspeed 6 Sport
I have recently noticed a high pitched whistiling noise coming from the engine at idle when I start the vehicle up. Is this a normal noise? I guess I haven't noticed the noise before so I was just wondering if anyone has this also. You can hear it inside the car with the windows up and also with the windows down.....just barely audible but I can hear it. This wouldnt be the turbo would it?
 
id check all your hoses makes sure theres no cracks or leaks in any of them and also check your belts sometimes belts make those sounds.
 
I have a 2003 Protege 2.0L with that same sound. I was thinking it was a belt or something. It was showing trouble code P0171 system running lean, but that was fixed when I replaced the intake hose. It's still making the sound. Someone suggested it might be the water pump? I'm hoping not.
 
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