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Clunk in driveline when I hit the accelerator while coasting

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  #1  
Old 06-04-2014, 10:03 PM
ImQuattro's Avatar
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Default Clunk in driveline when I hit the accelerator while coasting

I was coasting down the hill into our town and noticed that when I started to a accelarate (just touched the gas to keep momentum) I would elicit a clang/thump in the driveline.

Front driveshaft was completely rebuilt >500miles ago, rear is tight and both are greased. The rubber coupler at the rear diff is also near perfect.

Is this normal? Reminds me of a similar noise my old bosses Chevy K1500 made and the TSB fix was some special GM grease on the trans output->driveshaft splines. Not the same setup the LR has.

Thoughts?
 
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Old 06-05-2014, 06:56 AM
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A muffled clunk that seems to be coming from the rear is normal, and you will find a few threads about this. It's the sum of all the backlash in the drive line, and it's more proeminent when coasting at a certain speed then reaccelerating after a traffic light has turned green. Of course I am not talking about a clunk of epic proportion, or very metallic in sound, you are the judge of that.
 
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Old 06-07-2014, 02:42 AM
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My tcase clunks occasionally... lol. Your probably hearing what ^ said, its common in AWD cars/trucks.
 
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Old 06-07-2014, 10:25 AM
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Originally Posted by Dane!
My tcase clunks occasionally... lol. Your probably hearing what ^ said, its common in AWD cars/trucks.
Except Audi, Mercedes, BMW, Subaru, Ford, Chevy, Dodge, Actually Discos are the only car I can think of that clunk when you step on the gas. (they all do it, don't worry)
 
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Old 06-07-2014, 02:23 PM
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Meh, the Subaru's I've been in all clunked, much quieter than the disco, but clunked nonetheless.
 
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Old 06-08-2014, 03:29 AM
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Normal.
do not HIT the accelerator.
Bad for MPG.
Bad for Driveline.

Drive it - like there is an egg on the gas pedal.
You'll not hear any clunks.

Drive it full throttle or no throttle and you'll get "interesting problems" later.
 
  #7  
Old 06-08-2014, 12:20 PM
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Check your Engine & Trans mounts. They're a common failure point in the drive line.

I recently replaced all mine and have damn near eliminated all "thumps" under acceleration and deceleration.
 
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