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  #1  
Old 06-25-2003, 06:12 PM
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Clanking noise when accelerating, sometimes.

In the last couple of days I have noticed a loud clanking noise when the car is accelerating moderately. The noise sounds like cans being drug behind a car, like at a wedding. It is fairly loud and happens occasionally but only under moderate acceleration. I checked under the car and everything seems perfect, including the exhaust. Anyone have any ideas?
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  #2  
Old 06-25-2003, 08:40 PM
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Check you exhaust hangers yet again, then check the motor mounts and the exhaust bushings at the tranny.
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  #3  
Old 06-25-2003, 10:34 PM
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Exhaust bearings !
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  #4  
Old 06-25-2003, 11:36 PM
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What is an exhaust bearing?
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  #5  
Old 06-25-2003, 11:51 PM
Q Q is offline
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Check that your fan is not scraping the lower part of the shroud due to the engine mounts sagging with age. Also check your drive shaft center support bearing.
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  #6  
Old 06-26-2003, 01:24 PM
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Quote:
Originally posted by zeronero
What is an exhaust bearing?
I was just kidding !
Sounds like " Q " may be on to something.
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  #7  
Old 06-26-2003, 01:35 PM
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This is what the exhaust bushing kit looks like.

Picture straight from FastLane


In FastLane you'll find it under part # 201 490 00 37, also known as an exhaust suspension kit.
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'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72

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2012 VW Jetta Sportwagon TDI...at least its a diesel

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  #8  
Old 06-26-2003, 06:55 PM
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Quote:
Originally posted by Lebenz
Since no one else mentioned it, check out the heat shielding. When these get old, and/or when the connecters are warn the heat shielding will rattle...
Kudos to another great suggestion.
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  #9  
Old 07-14-2003, 03:26 PM
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Thanks for all the suggestions. I went on a 3 week vacation and in that time the noise had stopped, I drove around 1500 miles.
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  #10  
Old 07-14-2003, 03:28 PM
DTF
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Look for missing parts now...maybe catalytic converter cover?
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  #11  
Old 07-14-2003, 03:38 PM
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Yeah, I should probaly check under the car. I took plenty of trips on dirt roads going around 50 mph, smoothly though. It's funny seeing all of these people with SUV's going super slow to not get them dirty.
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  #12  
Old 07-14-2003, 03:55 PM
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I had this noise and it turned out to be the catalytic convertor breaking up inside. When I took it all apart lots of bits of catalyst fell out of the other boxes!
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  #13  
Old 07-14-2003, 03:58 PM
moedip
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zerozero - your last post gave a good clue - travelling on dirt roads at high speed. I have had stones wedge up between the muffler and heat shield on VW Jettas causing the same sort of sound - the muffler has to flex a little at moderate acceleration for the stone to vibrate - stronger or less acceleration jams the stone so it does not vibrate- the twist on the muffler has to be just right- physically removing the stone or having it vibrate out usually cures the problem. Hope this helps
Morris
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