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  #1  
Old 02-09-2008, 08:52 PM
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02 C320 Engine Rattle????? Emissions warranty?

Hello All,

Iíve done a lot of searches on this problem but wondered if someone has had the same problem or knows what it could be. Iím getting a rattle noise coming from underneath the car from the back of the engine. You can hear the rattle when revving engine at low RPMs (mainly on deceleration). My wife drove the car today and it stalled on her and the check engine light came on. She was able to get it home (only 3 miles away) and now Iím trying to figure it out before I take it in.

Iíve read about the catalytic converter but this seems to be between the cat and the engine. The engine seems to run fine and it sounds like its coming from the emissions system. The car only has 58k miles on it. Iíve read about the emissions warranty lasting for 80,000 is this true? My standard warranty ended at 50,000.

Any help would be GREATLY appreciated!!
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Old 02-10-2008, 12:41 AM
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Yes, your car is covered under 8/80 for cats. It does sound like that could be what you're hearing, your car has 4 of them, 2 per side, with two of them being close to the engine in the downpipes. The other two are under the center of the car.

If they're really bad, you can test them yourself by tapping on them with a rubber mallet or similar tool. If its bad, it's going to rattle.
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1980 500SE/AMG Euro
1981 500SEL Euro
1982 380SEL
1983 300TD
1983 500SEC/AMG Euro
1984 500SEC
1984 300TD Euro
1986 190E 2.3-16
1986 190E 2.3
1987 300D
1997 C36 AMG
2003 C320T 4matic

past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350
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Old 02-10-2008, 10:39 AM
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Well, that sounds like it. I hit the area just before the 2 pipes junction into one. I can hear something rolling around in there. (sounds metal and round?) Do you think this is a cat gone bad??

Also is it safe to drive like this?? My dealership is 45 miles away or should I have the car carried over to the dealer?

Thank you very much for your help!! Iím mechanical but not an expert by far with this car.
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  #4  
Old 02-10-2008, 11:18 AM
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Yes, take it in, it's not going to hurt anything driving it there. The stalling issue might be related but be prepared for it not to be too if they want to charge checkout time.
__________________


1980 500SE/AMG Euro
1981 500SEL Euro
1982 380SEL
1983 300TD
1983 500SEC/AMG Euro
1984 500SEC
1984 300TD Euro
1986 190E 2.3-16
1986 190E 2.3
1987 300D
1997 C36 AMG
2003 C320T 4matic

past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350
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  #5  
Old 02-10-2008, 11:28 AM
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Does this sound like a cat issue?
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  #6  
Old 02-10-2008, 03:39 PM
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Join Date: Feb 2005
Location: Frederick, Md
Posts: 4,540
Yes.
__________________


1980 500SE/AMG Euro
1981 500SEL Euro
1982 380SEL
1983 300TD
1983 500SEC/AMG Euro
1984 500SEC
1984 300TD Euro
1986 190E 2.3-16
1986 190E 2.3
1987 300D
1997 C36 AMG
2003 C320T 4matic

past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350
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