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Rattling from underneath

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Old 10-05-2005, 11:12 PM
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2003 clk55
Rattling from underneath
My car is rattling from under neath when the engine is revved a little up to 1500-2000rmp. You cant hear the noise from the engine bay but when u put ur head near the side skirt it is very loud.

Any ideas anyone???

THanks for any help
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Old 10-05-2005, 11:26 PM
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W213 '17 E43 ///AMG - W211, W208 no more
it may be ur cat convertor starting to go out.. .they have issues.. it starts as a leak and then it starts rattling...
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Old 10-06-2005, 12:12 AM
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Check the large splash guard (the one you remove to change the oil). I had one loose screw and it was making a hellacious rattle.
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Old 10-06-2005, 03:24 PM
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2002 CLK430 Cab
Rattle under car
My CLK430 cab had a very similar problem. Turned out the catalytic converter was bad. (Internal failure?). Anyway, it took about 5 days to get one, and was repaired under warranty.
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Old 10-06-2005, 04:06 PM
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01 CLK 430
Originally Posted by clk22
My car is rattling from under neath when the engine is revved a little up to 1500-2000rmp. You cant hear the noise from the engine bay but when u put ur head near the side skirt it is very loud.

Any ideas anyone???

THanks for any help
Oddly enought I am having the same problem, except mine doesn't do it all the time. I thought it was a loose exhaust hanger but I will have them check it.
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Old 10-06-2005, 06:48 PM
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2003 clk55
Yea it definately is a catalytic converter (left one) HOw much is this gonna run to fix.... i have no warranty left .
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Old 10-06-2005, 09:35 PM
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W213 '17 E43 ///AMG - W211, W208 no more
Originally Posted by clk22
Yea it definately is a catalytic converter (left one) HOw much is this gonna run to fix.... i have no warranty left .
yikes... good luck... i think each is like $6-900... i forget...
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Old 10-06-2005, 11:14 PM
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My buddy's CLK was rattling under certain revs and the it turned out to be a loose heatshield. Got it taken out for $5 - problem was gone.
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Old 10-07-2005, 03:28 AM
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01' CLK55
Originally Posted by clk22
Yea it definately is a catalytic converter (left one) HOw much is this gonna run to fix.... i have no warranty left .
just take out the catalytic converters and straight pipe it =) it'll cost you around 100 bucks labor.
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Old 10-07-2005, 09:42 AM
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01 CLK 430
Originally Posted by clk22
Yea it definately is a catalytic converter (left one) HOw much is this gonna run to fix.... i have no warranty left .
Isn't there an 8 yr./80,000 mile warrenty on emission parts?
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Old 10-07-2005, 02:03 PM
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CATALYTIC CONVERTERS are covered for 8 years!!!!!!!!!!!!!!! Thank god now i dont have to pay for it to be fixed!!!
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Old 10-07-2005, 02:33 PM
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01 CLK 430
Originally Posted by clk22
Yea it definately is a catalytic converter (left one) HOw much is this gonna run to fix.... i have no warranty left .
How did you find out that your cat was bad?
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Old 10-07-2005, 03:45 PM
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i brought it to an exhaust shop and we put it on a lift and it was rattling from inside the cat.
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Old 10-08-2005, 05:43 PM
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01 CLK 430
Originally Posted by clk22
i brought it to an exhaust shop and we put it on a lift and it was rattling from inside the cat.
Me too, except I took it to the dealership this morning. Turns out my left one is bad, said it would take two weeks to get in.
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Old 10-08-2005, 05:46 PM
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My left one is gone tooo how many miles are on ur car mine is just under 44k. And my check engine light has been on for like 3-4months hahah awesome
Fuel trim malfunction bank 1 and bank 2.
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Old 10-09-2005, 08:06 PM
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01 CLK 430
Originally Posted by clk22
My left one is gone tooo how many miles are on ur car mine is just under 44k. And my check engine light has been on for like 3-4months hahah awesome
Fuel trim malfunction bank 1 and bank 2.
Mine is at 39,000 but it's been rattling for a couple of thousand miles now.
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