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Popping rear axle fix?

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Old Aug 11, 2012 | 11:34 AM
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Default Popping rear axle fix?

I have a 2001 convertible that I have been working on for the last year or so to get it back into decent daily driver shape. I bought it new and now have 149,000 on the odometer. I have replaced the radiator, a/c compressor, flywheel, repaired the dim hvac among a bunch of other things learned from this forum. Now having a problem with the rear end. When accelerating hard I will sometimes get a thump in the rear that feels like a tooth is missing off of a cog. sometimes this will happen more than once most often one thump and done. If I accelerate gently the problem will not happen. Reading thought Pewter99's ultimate DIY/FAQ thread post #32 he speaks about a popping rear end fix. Is this what I am experiencing? The fix looks straight forward but I don't want to start taking things apart unnecessarily.
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Old Aug 11, 2012 | 11:42 AM
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With out tracking down the fix that you referred to.
If it's the one in regards to lubricating the axle splines & the hub area.....

That would be a ticking sound not a thumping sound.

Check to be sure that your two nuts at the differential are torqued correctly to the cradle.
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Old Aug 11, 2012 | 02:55 PM
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yes that is the fix I was talking about. If it is fixing a ticking sound then that is not what I need. My problem literally sounds like a tooth is missing from a wheel and it is spinning to catch up with the missing tooth. Thank you for the input.
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Old Aug 11, 2012 | 03:07 PM
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You might want to look real good to see if any of your exhaust pipes have been making contact with the bottom side of the car, especially in the area where the pipes cross over the axles & towards the rear from there.
Look carefully for "Witness Marks".
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Old Aug 11, 2012 | 03:34 PM
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I have about an hour before my granddaughter wakes up so Im going to put it up on ramps and see what I can see. thanks for the pointers. Have a good weekend. If I see ''witness marks" Ill post back.
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Old Aug 11, 2012 | 07:12 PM
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Check that the rear subframe is torqued to spec. That fixed a thump that started after letting a dealership mechanic work on it.
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Old Aug 13, 2012 | 09:30 PM
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check if the axle nut is loose
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Old Aug 14, 2012 | 06:05 PM
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It could be the posi clutches sticking when cold. Get some limited slip additive and put that in the rear end. That fixed my Z06 that was doing the same thing.
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