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loud knocking coming from rear?

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Old Jan 17, 2010 | 02:24 AM
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Default loud knocking coming from rear?

Today my car started making a loud knocking noise when the car is costing, or at a steady speed. If im speeding up or using the brakes its fine. The noise changes speeds depending on the cars speed. I have no idea what this could be, but the whole car shakes while this is happening. What do you guys think my problem is?
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Old Jan 17, 2010 | 05:41 AM
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Any vibration in the pedals?

Wheel alignment, torque arm mount, torque converter, bushings, joints......

What where you doing before it happened?
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Old Jan 17, 2010 | 07:18 AM
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Are you confident in your rear-end? I noticed it's been replaced. It's more than likely that the noise/vibration would happen 100% of the time if it was your rear though.
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Old Jan 17, 2010 | 12:04 PM
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I dont think its the rear end. i think it has something to do with the brakes. It doesnt happen when im using the brakes, and the noise goes along with the tires.
I didnt really do anything bad to triger it. i was just driving about 60mph and when i started to coast to a stop it started happining.
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Old Jan 17, 2010 | 12:17 PM
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That's your axles shifting slightly. If you have a C clip setup they do that occasionally. Also, what carrier do you have?
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Old Jan 18, 2010 | 02:39 AM
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Did a walk aroumd to see if i could find anything wrong, and to my suprise the rear driverside rim had only one lug that was tight.
Well im just glad that was my only problem.
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Old Jan 18, 2010 | 12:29 PM
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Old Jan 18, 2010 | 03:06 PM
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Another WOW! Maybe the lugnuts didn't get tightened the last time they were off. I have also seen that when someone lubricates the studs. Not good to lubricate wheel studs.
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Old Jan 19, 2010 | 08:24 PM
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yea it was an epic failure on my part, that should have been the first thing i checked. The car has been in shop for the last few months, and was rushed out in the last minute. they probably just didnt get tightened.
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