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AT making weird sound when going to reverse

Old Jul 19, 2008 | 09:20 PM
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Default AT making weird sound when going to reverse

Guys,

When I start the car up and put into Reverse, I hear a chain like sound coming from the back. The car hasn't moved. It is when I changed the gear.

It only happens once during the drive. Once I get out of the garage I cannot duplicate again until the next time (seems like the first start of each day)


Tony
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Old Jul 20, 2008 | 08:41 AM
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Hmmm, I would check the rear differential - changed fluid in that lately?
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Old Jul 20, 2008 | 08:44 AM
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Axle clicking
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Old Jul 20, 2008 | 09:50 AM
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lol ya its axle clicking, 200% sure
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Old Jul 20, 2008 | 09:54 AM
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what do you do about the axle clicking?
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Old Jul 20, 2008 | 03:14 PM
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Originally Posted by rcdash
Hmmm, I would check the rear differential - changed fluid in that lately?

It has 30k miles. Its going to be so hard to prove it to the dealership.


Tony
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Old Jul 20, 2008 | 03:15 PM
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Originally Posted by ttuberz
lol ya its axle clicking, 200% sure

Is this normal? The car isn't moving. Just changing the gear the first time seems to make that noise.

Tony
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Old Jul 20, 2008 | 05:01 PM
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You may not be moving but in an auto power is always being applied to the rear wheels so once you put it in a gear (reverse is a gear) that power gets pushed to the wheels, but since the brake is on your car doesn't move, but it still makes the sound.

I dunno though a sound like a chain moving? That might be a different problem. You can take it to the dealership and have them check it out, if it is the rear axle clicking it's a TSB and they have to replace the grease inside the diff I believe.
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Old Jul 20, 2008 | 05:38 PM
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Originally Posted by gregom
You may not be moving but in an auto power is always being applied to the rear wheels so once you put it in a gear (reverse is a gear) that power gets pushed to the wheels, but since the brake is on your car doesn't move, but it still makes the sound.

I dunno though a sound like a chain moving? That might be a different problem. You can take it to the dealership and have them check it out, if it is the rear axle clicking it's a TSB and they have to replace the grease inside the diff I believe.
I had a friend that had the axle TSB. I got to listen to the car while he reversed the car so I am aware of the sound.


Its very hard to describe but it just does this once during the day when I pull out of the garage.

I just came from the garage and started the car. I waited until 2 minutes and the "chain" noise came up. The sound definitely comes from the back and below.


Tony

Last edited by tractng; Jul 20, 2008 at 10:36 PM.
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