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| j3studio | Intermittent Clunk | ||
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Elite Guru
 
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(1985, A4, very stock, 71k miles) When I drive Lauren I sometimes (of course) hear a clunck. It'll get louder, than softer, go away, come back, etc. More data: 1) If you forced me to pick where it's coming from, I'd pick passenger's side front, but I'm not absolutely sure of that. 2) I hear it with the HVAC on or off. 3) I hear it more when I'm cruising or slowing down. 4) There's nothing obviously loose in the engine compartment. Thoughts? |
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Posted on: 2013/11/17 17:36
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| josephf31 | Re: Intermittent Clunk | ||
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Senior Guru
 
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Total shot in the dark; engine mount(s)
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Posted on: 2013/11/17 18:17
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2002 Magnetic Red C5 6 spd LS1 convertible |
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| j3studio | Re: Intermittent Clunk | ||
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Elite Guru
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Quote: josephf31 wrote: Thanks, Joe!
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Posted on: 2013/11/17 22:58
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Grace, 2003 50th Anniversary Convertible |
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| bogus | Re: Intermittent Clunk | ||
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Grand Imperial Pooh-Bah
 
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Motor mounts would result in seeing the engine REALLY move side to side.
I am thinking... In no order... * Shock mount * Spring mount bushing * upper or lower control arm bushing * Ball joints * tie rod ends (inner or outer) * brake pads Take your pick, John... |
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Posted on: 2013/11/17 23:06
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The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me |
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| josephf31 | Re: Intermittent Clunk | ||
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Senior Guru
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Quote:
Broken motor mount, yeah but could be just loose; happened on my Sonata. |
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Posted on: 2013/11/17 23:37
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| joeld | Re: Intermittent Clunk | ||
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Guru
 
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I had a similar "clunk/thud" on my Firebird,1986, and it was the sway bar end link bushings.
Joel |
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Posted on: 2013/11/18 1:20
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| bogus | Re: Intermittent Clunk | ||
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Grand Imperial Pooh-Bah
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I am not a fan of damning the motor mounts... GM motormounts last forever if the engine isn't beat on.
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Posted on: 2013/11/18 2:02
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The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me |
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| Matatk | Re: Intermittent Clunk | ||
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Webmaster
 
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Get it jacked up and start rattling parts in the front end. Could be anything in the suspension. Could also be a driveshaft u-joint. Sometimes sounds are hard to pinpoint.
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Posted on: 2013/11/18 2:24
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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| bogus | Re: Intermittent Clunk | ||
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Grand Imperial Pooh-Bah
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Many of the automakers today have sound analyzers... they can detect, via the frequency of the sound, what is causing it.
Engine RPM vs driveline RPM vs wheel RPM vs vehicle speed... etc... |
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Posted on: 2013/11/19 22:19
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The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me |
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| mechguy79 | Re: Intermittent Clunk | ||
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Guru Newb
 
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I had a similar issue, but it wasn't the front. There are teflon coated washers between the half shafts and spindle in the rear. If they have been worn out, broken, or never there there is a prominent clunk. Sitting in the car I could have sworn it was under me, but someone outside the car said it was actually from the rear.
It is easy to change and you can get it from the dealer. I don't remember the part number, but it was only $5 each and took me less than an hour to change both. My car didn't have one of them. |
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Posted on: 2013/11/20 15:17
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| TommyT-Bone | Re: Intermittent Clunk | ||
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Chair-man of the bored
 
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Quote:
I did not know that. |
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Posted on: 2013/11/20 17:14
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| bogus | Re: Intermittent Clunk | ||
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Grand Imperial Pooh-Bah
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Quote:
Yeah... a friend of mine is a Dodge tech and Mopar has such a tool. use it a lot to find driveline noise in the big trucks... 4x4's are really problematic... |
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Posted on: 2013/11/20 19:18
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The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me |
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