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#21
12-08-2005, 11:54 AM
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I think I have the fix
TSB: 641805 This TSB addresses the transmission-whine-sounds that come into the cabin while under power. The problem is an evaporator hose that exits next to the transmission. A two-way valve opens whenever the fan runs on the climate control system, thus allowing sounds to be transmitted up the hose and into the cabin. Solution: Install a one-way valve with the part indicated in the TSB. I plan to have mine done in the next couple of days and will report the success of this procedure. I can consistently repeat the problem so I'll very quickly know if it worked or not. Chris 
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#22
12-08-2005, 12:34 PM
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Ah now I have this very same problem, sometimes the whistling noise gets severly loud for about 20 seconds then goes away but you can still hear it when accellerating
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#23
12-08-2005, 03:12 PM
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Update
Been to the dealer, they replaced the DISA/Variable Intake Adjuster valve. No luck. Sound is slightly less than before, but still there. Could be temp related? It is alot colder out now than when this first started. This sound does not seem to be having any kind of adverse affect on the vehivle at all. She runnin' great. It's just annoying.
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#24
12-08-2005, 04:32 PM
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Chalk me up for having the same sound. Guess I will mention the TSB next time we take it in.
__________________
2001 X5 3.0i (PP/WP/AP) Traded at 213K miles RARE White on Black - Why does everyone get Tan??  First E53 with 215s on XOutpost!!  
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#25
12-08-2005, 04:54 PM
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my '03 4.6is does the same exact thing.
and here i thought that this was normal for this engine. and yes, it does remind me of some sort of blow-off valve/supercharger.
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#27
12-09-2005, 10:37 AM
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so, is this blow-off valve sound normal?
i'm wondering whether i should take my 4.6is in for a checkup and while there have them replace my burned out brake lights.
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#28
12-09-2005, 11:55 AM
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I think the TSB I mentioned a few posts down will take care of it.
Quote:
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#30
02-28-2006, 11:49 PM
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This did the trick for me. Just ensure your tech doesn't mount this dangling hose right next to the driveline. If he does, your whine will not go away. Mine is fully gone with proper installation.
TSB: 641805 This TSB addresses the transmission-whine-sounds that come into the cabin while under power. The problem is an evaporator hose that exits next to the transmission. A two-way valve opens whenever the fan runs on the climate control system, thus allowing sounds to be transmitted up the hose and into the cabin. Solution: Install a one-way valve with the part indicated in the TSB. Best of luck to ya! And welcome to the best X board in the world!!! :welcome: Quote:
Last edited by CGSTL; 03-01-2006 at 01:28 AM.
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