Mystery noise noise from engine
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Mercedes 1992 300se
Mystery noise noise from engine
I have the 3.2L straight 6 w140. Just noticed a strange whistling noise coming from the engine. My first thought was that it had to do with the the heat system because I just started using it. But I’m not sure, it makes the noise while the heat is off. Does anyone know what this sound could be, or have any ideas. Any help is much appreciated.