View Single Post
      08-18-2012, 07:13 PM   #17
JohanW
New Member
 
Drives: E91 2006
Join Date: Jun 2012
Location: Sweden

Posts: 28
iTrader: (0)

If the noise are present over the complete frequency band it doesn't sound like a ground loop problem (correct me if I'm wrong).
If you have a grounding problem it's very common that the pitch change with the engine rpm.

There are several threads about the same issue but I haven't read one with a solution.

I don't know if spectrum analyzer for a smart phone could be used to find out the fourier transform of the noise.
I think I will try that to know if it's white noise.
JohanW is offline  
0
Reply With Quote