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HELP!!! C320 Fuel Cutoff, Muffler Rattling

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Old Mar 4, 2007 | 11:33 AM
  #1  
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HELP!!! C320 Fuel Cutoff, Muffler Rattling

Alright, my car was towed yesterday after it became undrivable, but let me recap how it got to this point and hopefully you guys can help identify the problem (or speculate).

I switched on my car yesterday and I heard a loud rattle; almost as if under the car, in the middle of the exhuast there was a peice of metal shaking. I called the dealership and they said their service department was just closing, therefore if the problem persists I should call roadside.

Drove about four blocks and reved, and heard the noise again. So I called roadside, told them about the noise and their response was - 'it's a shield that goes around the muffler and it's probably lose and rubbing against the muffler'. But they indicated it's okay and when the car goes in for service B (scheduled Tues. - and 1,500 miles over ) they'll fix it for me. Fine, drove to the store and back home. Finally was leaving home again later in the evening and suddenly the Check Engine light came on. Called Roadside, they said it's cause the emissions aren't upto standard but if the car is driving then it's fine. They told me a trick to turn the light off (by a steering wheel pattern). Didn't work, but finally got on the highway, and suddenly the car just 'stalled' (it was still on), but it was as if there was a fuel cutoff. It didn't go above 54 miles per hour. It felt like the life just came out. Pulled over to the side, waited on the phone for 1 hr. and then got a tow truck to come get me (another 1 hr.).

So now the car is at the dealership, until Monday when they'll get in and assess the problem. So basically guys, what the hell is wrong with my car!?!!?!?!



Tee_Tz.
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Old Mar 4, 2007 | 12:05 PM
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My guess.....

a baffle in one of the mufflers came loose and has clogged the exhaust flow. Requires muffler replacement.
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Old Mar 4, 2007 | 12:07 PM
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Originally Posted by mleskovar
a baffle in one of the mufflers came loose and has clogged the exhaust flow. Requires muffler replacement.
Wow - a totally new muffler? Is there a chance they would try and uncongest the current one?


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Old Mar 4, 2007 | 12:59 PM
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Originally Posted by tee_tz
Wow - a totally new muffler? Is there a chance they would try and uncongest the current one?


Tee_Tz.

possibly bro, which dealer do you go to?

My ML was stalling about 3 weeks back? i posted on the 163 forums, floored the car and seemed like it was a 2 liter inside. then the CEL came on, bought it into mb-manhattan, they replaced a few things,


connector pins at MAF, engine oil temperature sensor, throttle replacement/position sensor and switch,

hope i can help
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Old Mar 4, 2007 | 01:31 PM
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Originally Posted by tee_tz
Wow - a totally new muffler? Is there a chance they would try and uncongest the current one?
First of all this was just a guess based on your symptoms.....and no, I don't believe MB uses repaired/recon parts.
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Old Mar 4, 2007 | 03:07 PM
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Originally Posted by advans
possibly bro, which dealer do you go to?

My ML was stalling about 3 weeks back? i posted on the 163 forums, floored the car and seemed like it was a 2 liter inside. then the CEL came on, bought it into mb-manhattan, they replaced a few things,


connector pins at MAF, engine oil temperature sensor, throttle replacement/position sensor and switch,

hope i can help
Wow, I took it to MB Larchmont (they always tow to the nearest dealership). I guess I'll find out the problem on Monday, I just hope it isn't something major.


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Old Mar 4, 2007 | 03:41 PM
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muffler replacement? time to get a eisenmann of remus.....
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Old Mar 4, 2007 | 07:17 PM
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lemme know whats going on bro, post a scan of your service sheet when you get it. so we can refer back if anything of such happens.
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Old Mar 4, 2007 | 08:35 PM
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Originally Posted by white_w203
muffler replacement? time to get a eisenmann of remus.....
+1, that's what i wanna say lol

damn i can't wait my next pay check and get one
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Old Mar 4, 2007 | 11:41 PM
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Sounds like a cat broke apart and took out the down stream o2 sensor....
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Old Mar 5, 2007 | 12:23 AM
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never heard that before, good luck
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Old Mar 6, 2007 | 11:32 AM
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Hey guys, for all those who helped calm my nerves, well after the whole of yesterday and today, I found out that it was the catalytic converter that needed to be replaced, they are working on installing that now and hopefully once installed the car will be okay.

I'm surprised that it failed already, car has 34K miles on it, so it's interesting that it had problems already, but hopefully the car will have no other issues like this.


Tee_Tz.
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Old Mar 6, 2007 | 01:14 PM
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Originally Posted by tee_tz
Hey guys, for all those who helped calm my nerves, well after the whole of yesterday and today, I found out that it was the catalytic converter that needed to be replaced, they are working on installing that now and hopefully once installed the car will be okay.

I'm surprised that it failed already, car has 34K miles on it, so it's interesting that it had problems already, but hopefully the car will have no other issues like this.


Tee_Tz.
Good to hear that it was just your cat...nothing too serious...I'm guessing yours went out quick because everything is built differently...some better quality than others...or maybe you should take the 100 pound weight off your gas pedal haha
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Old Mar 6, 2007 | 07:03 PM
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Originally Posted by Canadian_Yeti
Sounds like a cat broke apart and took out the down stream o2 sensor....
Damn I'm good!

Glad to hear everything is ok!
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Old Mar 7, 2007 | 10:13 AM
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Thanks dude, I'll post up the Service Sheet as per your request advans.

I must say, I picked up the car and when I go over bumps, I hear the exhaust shake/rattle a little, like it's not tight. Looks like it might be going back already!

Otherwise the car works fine and obviously, the Check Engine lights is not on anymore.


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Old Mar 7, 2007 | 10:47 AM
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the Dealer really sucks
tee show me a teaser of the AMG kit
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Old Mar 7, 2007 | 11:24 AM
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Originally Posted by WaveyKat
the Dealer really sucks
tee show me a teaser of the AMG kit
Haha, not yet, gotta finish everything (2005 blinkers, grille, head-lights). By the way, these door sills, are they an easy install? Those directions from Formymercedes.com don't look to simple. I ain't trying to pay BestBuy/Circuit City for this!


Tee_Tz.

Last edited by tee_tz; Mar 7, 2007 at 11:26 AM.
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Old Mar 7, 2007 | 11:54 AM
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man please.... come to brooklyn i will do it for you.. wait wait HOLD up aint u got Factory Bi-xenon

saturday should be a nice day out around 50 degree

Last edited by WaveyKat; Mar 7, 2007 at 11:58 AM.
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Old Mar 7, 2007 | 02:36 PM
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Originally Posted by WaveyKat
man please.... come to brooklyn i will do it for you.. wait wait HOLD up aint u got Factory Bi-xenon

saturday should be a nice day out around 50 degree
Alright we'll do it Saturday then. In the morning I'm going to pick up the 2005+ Side Mirror Blinkers from the dealership, so I'll come right after.

Yeah, I have factory Bi-Xenons, but didn't they change the front headlamps in 2005+... it looks like they've got a separation between the blinker part and the headlight... am I seeing things??


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