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Old 08-29-2012, 12:27 AM   #134 (permalink)
bucknakedru
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Join Date: Jun 2009
Location: chicago
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Drives: Silver 370Z
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Originally Posted by bucknakedru View Post
It ends with 'B'. So I called the dealer on my way home from work and he said to just bring it in.

When I arrived, my original service advisor looked confused and asked why I was there. After I explained that the noise was back he said the tech that works on the 370's was off that day. I told him that I just spoke to someone who said to just bring it in. So to save face I guess, the service advisor took it upon himself to investigate the noise issue as well as two other "advisors" because they had nothing better to do.

So after briefly sitting in the car (in the garage w/windows down), one of the other "advisors" asked to get another 370 and pull it up and see if they could here it in that one to see if it was normal. So they pulled up a brand new 2012, while I explained that to my knowledge it only affected 09's and that either way I cannot tolerate the noise even if it is what they consider 'normal'.


They gave up and I am dropping the car off so the mechanic can look at it. I am also going to tell them again about the part numbers now that I have the exact ones.
So the dealer called today and said it was my passenger Polk DB6501 tweeter making the noise!! They showed me the tweeter and then disconnected it and sure enough the noise was gone.

Other than that the tweeter still works and the drivers side is normal. The noise is just as described in this forum. It does not change in pitch or volume it stays constant after start up and makes two or three seperate whining noises just after the engine shuts off.

What would cause this? Also, I thought the ECM part numbers were the big issue. When I told them about the last letter, they said "b" was the revised ECM.
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