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Old 03-15-2016, 05:12 PM   #1
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Default My car sounds like a metronome

Hey Guys,

Im just looking to get some input from those with more experience than me. I've looked around and can't seem to find any threads/info/videos that list symptoms exactly like this. I haven't had an opportunity to look underneath yet as this started happening as i was driving to put her in storage. The thumping started soft...i turned down the radio to make sure i wasn't just hearing things...5 minutes later it wasn't drive-able.
The thumping increases in speed relative to acceleration. it also occurs going in reverse. The thumping you hear in the video is me going 5 mph.

I have no idea how to post a video so im hoping this youtube link to video will work.


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Old 03-16-2016, 06:07 PM   #2
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rod knock/spun bearing
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Old 03-16-2016, 06:09 PM   #3
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Something broken in the drivetrain. Too slow to be rod knock. Does it increase with revs or wheel speed.

Rod knock would follow revs but not wheel speed.
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Old 03-16-2016, 07:09 PM   #4
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Not rod knock, too tinny/hollow. IMO, based on speed and tempo, that's a fully fucked u-joint in the driveshaft.
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Old 03-16-2016, 07:14 PM   #5
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Oooh, thats a good one.

I'd also put $1 on a broken u-joint. Something like i found looking under my truck a few months ago

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Old 03-16-2016, 08:18 PM   #6
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Thanks for all the input!

Yea it increases with wheel speed.
Could it be inner cv joints? I know both of my inner cv boots are torn and need replacing. Jabroni before me had it slammed, i suspect that caused it
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Old 03-16-2016, 08:19 PM   #7
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Yes, could be that
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Old 03-18-2016, 10:40 AM   #8
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Not to oversimplify the issue, but have you made sure your wheels are tight? I had a similar sound on the way home from work yesterday because my LR wheel was about to escape. Stupid HF torque wrench, can't trust 2 year old Chinese kids to make anything anymore.
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Old 03-18-2016, 12:13 PM   #9
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Thats a good idea, i'll check the lug nuts, but i have a feeling it wont be something so simple. I'm not that lucky lol
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Old 03-18-2016, 12:27 PM   #10
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Quote:
Originally Posted by Bear.ube View Post
Thats a good idea, i'll check the lug nuts, but i have a feeling it wont be something so simple. I'm not that lucky lol
Driveshaft is also easy as hell to replace. Its 4 bolts and nuts and then just slides out. May have to remove the exhaust to make room depending on what you have installed.
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Old 03-20-2016, 09:07 PM   #11
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SOLVED! Finally got to my storage building with a jack and started poking and prying. My joints and CV axles were all fine....so per TehZacks suggestion i checked the lugs... sure enough lol front left were wicked loose. Thanks for the suggestion bud.
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Old 03-21-2016, 10:49 AM   #12
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Quote:
Originally Posted by Bear.ube View Post
SOLVED! Finally got to my storage building with a jack and started poking and prying. My joints and CV axles were all fine....so per TehZacks suggestion i checked the lugs... sure enough lol front left were wicked loose. Thanks for the suggestion bud.
You're quite welcome. Glad you caught it before the wheel made a break for freedom.
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Old 03-22-2016, 04:57 AM   #13
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loose lug nuts...good catch

Had that happen years ago after picking a car up from a transmission shop, scary to think what the outcome could have been.

Last edited by ramensoop; 03-22-2016 at 12:05 PM. Reason: I was a drunk asshole
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Old 03-22-2016, 09:23 AM   #14
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loose lug nuts...not sure i'd admit that in public
Pretensious *******...not sure I'd admit that in pubic.
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Old 03-22-2016, 12:08 PM   #15
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Pretensious *******...not sure I'd admit that in pubic.
Drunk post...fixed
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