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  #1  
Old 07-22-2005, 10:10 AM
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Noise in rear

Not sure what this could be, but curious if my AWD clutches are binding:

At very slow speeds....particularly in parking lots while coming to a stop and turning or starting to accelerate when turning, I hear this low bass noise from the rear....small vibration with it.

Can anyone tell me what they think is going on?.....I'm not sure what a failing bearing sounds like in this car, my tires are all the same size and tread is worn evenly on all.....so what's left? something with the differential, etc?

What is a typical cost to fix the AWD clutches if they are worn?

Thanks,
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  #2  
Old 07-22-2005, 10:41 AM
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Have you rulled out the wheel bearings? The next thing you can do is go to a parking lot with lots of room. Do some figure eights (slow speed - not donuts) which would be hard over to hard over in the other direction. Check to see if you have binding or clunking sounds. Good luck.
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  #3  
Old 07-22-2005, 10:47 AM
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I would put in the fuse (10 amp under the hood in front of overflow bottle) to make it temp FWD and try to see if the sound persists.

It happens when you accelerate AND when you Brake while turning?
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  #4  
Old 07-22-2005, 11:11 AM
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Figure 8's sound fun......should I use the fuse when I do the 8's or do them before I check the system with the fuse

Also when I put in the fuse, what will I notice....anything on startup? any blinking lights on dash?.....And when I take it out, should everything be the same way it was before it was put in?
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  #5  
Old 07-22-2005, 11:13 AM
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I think it only happens when I press the pedal and turn slow.......I ruled out wheel bearings just because I have been driving through the city and highway and didn't notice any noise or feel any vibrations.....
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  #6  
Old 07-22-2005, 11:54 AM
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If it happens on acceleration only, my guess is you have a U-joint going out on the prop-shaft.
Do you get any of the symptoms if you just floor it in a straight line?

By putting in the fuse you disengage the power to that half of the car. If you still get the noise/symptoms with it in, that pretty much rules out the prop-shaft.

Go thorugh a specific series of moves with the fuse out(normal), then duplicate that with it in.
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96LSi 102k Laguna Blue
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the Chick Magnet:
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90 Yamaha V-Max
82 Yamaha XJ650LJ Turbo
My Diver Propulsion vehicle:
88 Jeep Cherokee 160k
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88 XT6 AWD Pearl,
86 XT Lt Blue,
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  #7  
Old 07-22-2005, 12:21 PM
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Lay off the beans!!

Seriously though, at what speeds do you hear this noise?
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  #8  
Old 07-22-2005, 03:49 PM
94svxred 94svxred is offline
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How did you find out about the 10amp fuse thing VERY CLEVER . Not an issue for me due to mine being a fwd L , but stll very clever
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  #9  
Old 07-22-2005, 04:29 PM
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The AWD models have the fuse in the box so that it can be switched to FWD in case of a problem with the transmission. that way you could limp home.
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1993 25th AE ~98K (02/93) #164
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1994 Laguna Blue Pearl LSi ~124K (1/94) #2408
1994 Laguna Blue Pearl LSi ~144K (10/93) #1484
1994 Laguna Blue Pearl LSi ~68K (10/93) #1525
1994 Barcelona Red LSi ~46K (02/94) #2624
1994 Pearl LSi ~41K (12/93) #1961
1995 Bordeaux Pearl LSi ~70K (02/95) #855
1996 Polo Green LSi ~95K (03/96) #872
1997 Bordeaux Pearl LSi ~55K (08/96) #097
2003 Brilliant Red LS1 Convertible ~29K (04/03) #8951
1999 Magnetic Red LS1 Coupe ~33K (04/99) #6420

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  #10  
Old 07-22-2005, 05:29 PM
94svxred 94svxred is offline
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Thanks EARL See it just goes to show ya , You learn something everyday!
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  #11  
Old 07-22-2005, 06:21 PM
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Actualy I learned about the fuse trick from this realy cool
Forum
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David
96LSi 102k Laguna Blue
95 LS-L AWD, Safety package, 140k Polo Green

the Chick Magnet:
91 Justy GL EFI 4x4 154k (new motor @120k)

90 Yamaha V-Max
82 Yamaha XJ650LJ Turbo
My Diver Propulsion vehicle:
88 Jeep Cherokee 160k
"U-sta-have"
88 XT6 AWD Pearl,
86 XT Lt Blue,
85 XT AWD/4x4 Turbo Space Blue
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  #12  
Old 07-25-2005, 04:54 AM
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I should have some time next weekend to take notes with and without the fuse in.
Let's see, for what I can remember, the noise happens just very briefly when the car starts to accelerate in a straight line with the wheel straight........not while moving though.
Also I noticed the noise present when I go and turn the wheel to the left as I pull into a parking space in a parking lot...Not on the gas though.....pretty much just rolling into the spot. (I still have to check turning the other way, but this is what I have noted in my memory so far)
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