Resonance noise from A/C behind dashboard - Page 2 - BMW 4-Series Forums
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post #11 of 14 Old 04-02-2014, 05:23 AM Thread Starter
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I have asked the garage to provide details of the parts they replaced and will get back to you
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post #12 of 14 Old 04-03-2014, 11:56 AM
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Went into service today. Since my 435 is very recent, it already had one weight (close to the shield end of the pipe). Moving at along the pipe has changed the vibration and the resonance noise, but the second weight is needed in order to (hopefully) eliminate it. So now I'm waiting for the part to arrive, but this is definitely the cause
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post #13 of 14 Old 04-03-2014, 12:46 PM
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Quote:
Originally Posted by Tomerk View Post
Went into service today. Since my 435 is very recent, it already had one weight (close to the shield end of the pipe). Moving at along the pipe has changed the vibration and the resonance noise, but the second weight is needed in order to (hopefully) eliminate it. So now I'm waiting for the part to arrive, but this is definitely the cause
Nice! Hopefully this does the trick, keep us posted as it will help others that come across this issue.



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post #14 of 14 Old 04-04-2014, 10:23 AM Thread Starter
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My garage replaced an A/C pipe from the evaporator - this stopped the noise - hope this helps
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