Weird Noises?????

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Apr 6, 2016 | 07:24 PM

LS12000SSCAMARO

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Weird Noises?????

so guys i need some advice.... my car has a grinding/poppingish noise coming from the rear end or trans i think... its not a new noise. its been there since ive had the car. its only on initial throttle, or i can hold the brake and between 1800-2000k rpm it does it, i can mash it down the interstate and it wont do it.... any ideas of where i should start looking?

Apr 6, 2016 | 07:41 PM

LS6427

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Check your bushings everywhere. Specifically....the torque arm bushing. Do you have any vibration at any speed...?

.

Apr 6, 2016 | 09:40 PM

LS12000SSCAMARO

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I have a vibration at 40 till 50 than it just stops

Apr 6, 2016 | 09:48 PM

98CayenneT/A

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Possibly u-joint

Apr 6, 2016 | 09:52 PM

LS12000SSCAMARO

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in the front? cause i can hold the brake and get to 2000 rpm (it has a 3600 stall but had the noise before) and it will still make the noise without me moving an inch

Apr 6, 2016 | 10:00 PM

98CayenneT/A

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Driveshaft u-joint, it connects the driveshaft and differential yoke

Last edited by 98CayenneT/A; Apr 6, 2016 at 10:06 PM.

Apr 6, 2016 | 10:05 PM

LS12000SSCAMARO

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is that something i can get at autozone or is it something i have to take to a shop

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Apr 6, 2016 | 10:25 PM

LS12000SSCAMARO

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how much should the play be? should it not turn at all? be that i mean the drive shaft shouldnt wiggle without everything moving?

Apr 6, 2016 | 10:37 PM

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98CayenneT/A

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Do you ever get a clunk going from drive to reverse?
You can pry at the joint between the joint and the driveshaft and watch for play. There should be no play.

Apr 6, 2016 | 11:08 PM

#11

LS12000SSCAMARO

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yes its like a clank/creak noise when i go to drive

Apr 6, 2016 | 11:13 PM

#12

98CayenneT/A

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From: White Bear, Mn

Quote:

Originally Posted by LS12000SSCAMARO

yes its like a clank/creak noise when i go to drive

I would say it's a bad u-joint. Take the drive shaft out and bring it to a shop to have a new one pressed in. Get a solid/non greasable one for they are stronger than the hollow greasable u-joints

Apr 7, 2016 | 04:17 AM

#13

LS6427

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Yup...bring it to a drivetrain shop if the u-joint needs to be replaced. My shop in Lauderdale that I use charges $25.00. Well worth it to have it done right.

But check that torque arm bushing for dry-rot or if its falling apart. Or any play in it. It only has to move a tiny bit to cause issues.

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