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E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

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  #1  
Old 05-10-2005, 10:34 AM
KK KK is offline
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Location: Los Angeles
 
Join Date: Apr 2005
Posts: 77
Mein Auto: 1998 328iS
Alarming mechanical noise at half / part throttle application and/or lift off!! HELP

Guys I am a new owner of a 98 328iS with 45K miles on the ODO. I have had this car for about a week and have been having a blast. I just noticed this weird, hollow, whirring noise at highway speeds when I apply partial throttle . It goes away if I let off the gas or get on the gas properly!! Let's see if I can explain this a little better...Lets say I am doing 70 mph on the highway and want to feed just enough gas so it doesn't slow down thats when I hear this whirring. I also hear it as I get off the gas (at partial throttle!!)

The car seems to be in great condition otherwise, revs like a dream and runs strong and tight.... Can some one tell me what this is?? Should I be concerned?? I did a search on the forum but couldnt find any thing relevant.....I apologize if this has been addressed before!

Last edited by KK; 05-10-2005 at 03:26 PM.
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  #2  
Old 05-10-2005, 04:15 PM
KK KK is offline
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Mein Auto: 1998 328iS
Any Body There???
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  #3  
Old 05-10-2005, 04:20 PM
Alex Baumann Alex Baumann is offline
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Do a search on 'differential whine', it will return mostly E46 related threads, but it sounds very much like the same problem to me.
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Old 05-10-2005, 04:39 PM
KK KK is offline
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Mein Auto: 1998 328iS
Quote:
Originally Posted by Alex Baumann
Do a search on 'differential whine', it will return mostly E46 related threads, but it sounds very much like the same problem to me.
It sounds more like a valve noice (hollow & non mechanical) than the differential whine.....it doesnt happen at any specific speed....more to do with the way throttle is applied..happens only when I apply partual throttle to an already moving car!!
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  #5  
Old 07-07-2005, 12:28 PM
emPoWaH emPoWaH is offline
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Location: Los Angeles, CA
 
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Mein Auto: E39
We have an '00 528iA that also exhibits a whirring noise. It seems to come from the driveshaft area, near the center console (armrest, gearlever) area when the car is rolling at speed. Anyone know what this could be?
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