11-28-2009, 11:29 AM
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#1 (permalink)
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Base Member
Join Date: Nov 2009
Location: So.Cal.
Posts: 95
Drives: 82Mercedes-Benz300SD
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Quote:
Originally Posted by theDreamer
For him it has been identified, there are still two variables in the noise. The one posted in this thread and the ECU in the other thread. Noises are bound to happen, this one seems a bit overlooked, but at the same time it is now a high "failure" rate as I will put it. Not everyone has it, so all internal testing could have come back fine, plus many are only having the issue after 5,000 or 6,000 miles.
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It's hard to imagine that an ECU could make much noise at all. Unless it has an electric cooling fan, there are virtually no moving parts at all. Why should an integrated circuit flowing with a few electrons create any kind of audible noise to be heard? I can see why a Diode would make noise and in some alternators they do. I have seen relays make noise and they are mechanical and electrical. But I have never seen a computer chip make any kind of noise unless it were an electric cooling fan right next to it.
I had all kinds of cars in the past that made all kinds of different noises at different times. I never obsessed over it so long as the thing ran fine. I would just ignore the noises or cover it up with music from the stereo.
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