Rattling Noise?
Thread Starter
Senior Member
Joined: May 2003
Posts: 452
Likes: 2
From: FLUSHING, NY
2006 E350
Rattling Noise?
I have a 99 clk 430 with 54000 miles.
I notice that when my car hits 20,000 rpms I hear a rattling or sraping noise coming from under the car. After I pass 20,000 or go below it the noise stops. It just happens as I'm hitting 20,000 rpm.
Any idea on what this could be or any suggestions. I don't have a warranty on my car and so I would be taking it to a regular mechanic. Any ideas on what I shoudl recommend to him to check out first.
Thanks.
I notice that when my car hits 20,000 rpms I hear a rattling or sraping noise coming from under the car. After I pass 20,000 or go below it the noise stops. It just happens as I'm hitting 20,000 rpm.
Any idea on what this could be or any suggestions. I don't have a warranty on my car and so I would be taking it to a regular mechanic. Any ideas on what I shoudl recommend to him to check out first.
Thanks.
MBWorld Fanatic!
Joined: Jun 2003
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From: Indiana
1986 560SEL, 97 BMW 740iL
Are you sure it's 20,000 rpm? or you meant 2,000 rpm? I haven't seen a car that could go over 7,000 rpm. And that probably in the red line already. 
Bad fuel? or filter? vacuum leak?
Bad fuel? or filter? vacuum leak?
Thread Starter
Senior Member
Joined: May 2003
Posts: 452
Likes: 2
From: FLUSHING, NY
2006 E350
OOPS sorry. I guess it's 2000 rpms. I had said 2000 rpms to someone and they corrected me and said its 20,000 rpms. So not knowing any better I believed them.
Yeah so I guess it's 2000 rpms.
Yeah so I guess it's 2000 rpms.
MBWorld Fanatic!
Joined: Nov 2001
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From: Philadelphia area
2010 ML550, 2010 E350 4M, 1966 Corvette Convt C2
Just had a similar problem with my E320 corrected. The dealer changed both cats and its now real quiet. I was told that some of the cats develop a loose internal baffle and rattle. Bet thats your problem
Thread Starter
Senior Member
Joined: May 2003
Posts: 452
Likes: 2
From: FLUSHING, NY
2006 E350
Ouch that sounds expensive. Is it something I can hold off till I have a day off or do you think I should rush it to a mechanic.
In other words will it cause any other problems by delaying the repair. I don't want to make the condition worse.
In other words will it cause any other problems by delaying the repair. I don't want to make the condition worse.
Senior Member
Joined: May 2003
Posts: 332
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From: LI, NY
02 W163, 84 W123, 03 E39, 98 E39
Emissions Warranty
Items related to emissions have a federally mandated warranty to 80,000 miles I believe. It is possible that the cats may be covered under this, so you may be able to get it done with no $$. Check into this at a MB dealer.
Thread Starter
Senior Member
Joined: May 2003
Posts: 452
Likes: 2
From: FLUSHING, NY
2006 E350
Thanks for everyones help. I will try to check with my local MB dealership, even though I really wouldn't trust a word they say.
Hopefully it is part of a federally mandated warranty.
Thanks again.
Hopefully it is part of a federally mandated warranty.
Thanks again.
