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Cow bells in the engine

9169 Views 32 Replies 18 Participants Last post by  dmb4862
Has anyone else noticed this sound at idle speed, hot engine (2.0FSI GTI), if you stand outside your car you can hear what sounds like ringing bells, chriplike resonance. Seems to to coming from the area right near the alternator. Of course it doesn't do it all the time. Noticed it in my car, and a friend's GTI too.
I've recorded it with my cell phone voice recorded, sounds louder than it actually is in person See WAV link here, this sound can be heard starting at about the 4 second mark onward.

Chirp.wav sound file

Anyone else hears this? What is it??

Thanks
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Hey there fellow GTI owners. Keep in mind that the MKV has direct fuel injection (same technology used in diesel engines) therefore we have a fuel pump in the engine compartment which makes some noises which you may not have heard in other vehicles which run with unleaded fuel. FYI (The FSI motor runs with fuel preasures well over 1000psi and our injectors a good upto 3000psi) Not bad for a stock fuel system..
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