C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Loud Noise coming from rear under load......

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Old Nov 3, 2003 | 02:13 PM
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From: Less Talk, More WOT | Houston TX
Default Loud Noise coming from rear under load......

Lately I have been getting a loud rattling sound when I floor it which seems to be coming from behind the drivers seat area in the rear of the car. It is a repetitve tapping sound sounds almost like metal hitting metal. Could this be a wheel bearing?? Could somebody help me find out where to start on finding this noise....

Thanks in advance.
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Old Nov 3, 2003 | 02:58 PM
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Default Re: Loud Noise coming from rear under load...... (Wheelman)

I had a ticking sound who's frequency increased with speed due to bad U-joints in a half-shaft.

Pull the rear wheels and rotate the rotors to see if the U-joints are bad.
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Old Nov 3, 2003 | 03:12 PM
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Wheelman
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From: Less Talk, More WOT | Houston TX
Default Re: Loud Noise coming from rear under load...... (65Z01)

I had a ticking sound who's frequency increased with speed due to bad U-joints in a half-shaft.

Pull the rear wheels and rotate the rotors to see if the U-joints are bad.
Ok i can do that, its easy enough.....can u help me understand how this is going to tell me how the ujoints are bad though?? :crazy: :lol:
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Old Nov 3, 2003 | 03:44 PM
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65Z01
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Default Re: Loud Noise coming from rear under load...... (Wheelman)

Well when I rotated my left rotor I could see that the half-shaft was rotating slightly but the inner U-joint shaft into the D-36 was not. This told me that the inner U-joint wear was excessive.

So, I had both U-joints on that half-shaft replaced.
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