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11-04-2020, 04:25 PM | #1 |
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High pitch buzzing noise from engine
Hello all,
I purchase my first M car a few weeks ago. 2008 E92 M3 with 95k on it. PPI was done and came back clean, I immediately did rod bearings just to be safe though. I noticed when I first bought the car that there was a high pitch buzzing noise coming from the engine whenever I would apply the throttle. It does it on cold start as well for about a minute then once the engine is warm it goes away, until you start driving and giving it some gas. I asked my tech about it when the rod bearings were being done and he says everything looked ok, so I'm not incredibly worried about it being something really bad but it's very annoying. Maybe a pump or throttle body actuators? I did a search around here but didn't find anything that sounds like this. Thanks! |
11-06-2020, 01:00 PM | #3 |
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11-09-2020, 08:33 AM | #6 |
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11-09-2020, 08:46 AM | #7 |
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Drives: G87 M2; E92M3 MT&DCT; M3 euro
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Likely alternator or pulley. I had this as well and my alternator failed on the highway. check voltage.
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11-09-2020, 10:07 AM | #8 |
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