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Old 09-17-2013, 05:22 AM   #1
andresdemenace13
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Exclamation Clunking Sound that goes on and off...

Hi there! I'm totally new in the world of automotive and I really want to learn on how to do this and that...

Ok, here's my problem... Every morning or after my car has been park for over 3 hours or when engine became totally cooled down (no warm felt at all), and then when I start it, I can hear rapid clunking noise on the "front-right side of my car". I thought it was my strut being blown or something.

The sound becomes for appreciated when I turn/face the wheel on the right (Car is not moving). But when i turn/face it on the left, the sound goes off (as in, normal car sound).

Here's another thing. So I'll drive her around for maybe 30mins or until the engine becomes hot (normal temp of engine after use), the sound would go away entirely even if I turn my wheel facing right.

Any ideas? Thanks!


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Old 09-17-2013, 06:28 AM   #2
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Just to help us understand your problem, could you clarify a few things.

If I understand what you are saying, it only makes this "rapid clunking" noise when the car is (1) not moving (no sound when moving), (2) wheel turned to right (no sound when turned left), and (3) only when engine is cold (goes away when hot). Is all that correct?

Does the sound change with engine RPM or remain the same?

Can you feel the "clunk" in the car, or just hear it?

What have you done so far? For example, have you jacked up the car and checked for any looseness in wheel, sway bar, strut arm bushings, etc.? Have you examined your motor mounts?

And finally, just for reference, how many miles on the car?
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Old 09-17-2013, 12:09 PM   #3
andresdemenace13
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Thanks for the reply! Anyways, all what you had said are all correct. And in addition to #1, the sound becomes louder and faster especially when I started to move the car. When driving in straight road, the sound can also be heard. and once I started to turn right, the clunking sound becomes more aggressive (louder and faster). The aggressiveness of the sound varies depending on how far I steer to my right.

there were no vibration on my side while driving but the impact of this sound really bothers me and i know it was coming from the front-wheel on the right.

Ever since the sound started, I had checked all possible looseness from wheels to engine (though I really don't know if i was checking the right place) but... before I started to hear that sound I remember I took out my front wheel on that side coz I was looking for the Torsion bar to adjust the height or in other words, I want to lowered my car just a bit.

the car has 190k+ km...
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Old 09-17-2013, 01:03 PM   #4
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I still don't understand if it happens:
-only while the car is moving,
-the car is parked and engine running
-or all the time.

If it's all the time, even when the car is not moving, perhaps your serpentine belt tensioner is bouncing around, when the power steering pump loads the belt, it makes the tensioner bounce worse.

If it is only while the car is driving, check your strut mount bolts under the hood, as well as the big nut on the strut shaft for looseness. Sway bar endlinks go bad and get clunky, bushings wear out and parts move around more than they should.
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Old 09-17-2013, 02:38 PM   #5
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Elsolo,

the sound is not there all the time. I noticed that after driving it for maybe 30 mins, then rest for maybe an hour (ignition off), then start the car again, the sound will be gone.

the sound will come back again the next morning or after i park my car for a long period of time. if its coming from any loose nuts or bolts, or even if something was damage from those parts you mention, (strut, sway bar, etc) the sound will be there all the time... but it's not.

I think my car has some rare disease or something... :(
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Old 09-17-2013, 03:52 PM   #6
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If the top strut nut is loose, it will be more clunky when the car has sat for a while, long enough for the strut to reach outdoor temp.
Drive it a few miles and the clunking may even go away as the shock warms up.
I have experienced this one myself.
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Old 09-18-2013, 04:43 AM   #7
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you know what, that really makes sense! coz the last time i took off the right front wheel (before hearing the clunking sound), I jacked up the car and i remember putting the axle stand underneath the control arm (which is the wrong spot). maybe that was the reason those nuts above my strut forced their way up loosening them...

I tried to tightened those nuts before i went to work and the clunking wasn't that loud anymore but they're still there. Maybe i just need to tightened the one in the middle (the big one).

I really appreciate your help! Thank you so much!

and one more thing, how do you tighten them correctly?
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Old 09-18-2013, 11:14 AM   #8
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Correctly, I dunno.

I use an O-ratchet and a T-handle allen wrench, and probably 60 ft-lbs(estimated) of torque
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Old 09-18-2013, 09:18 PM   #9
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My book says they should be 18ft-lbs or 25nm (for euro guys)... and the strut and spring thrust nut (the one in the middle) should be 35ft-lbs (48nm)...
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