Noise underneath my baby!!!
Thread Starter
Junior Member
Joined: Jul 2007
Posts: 69
Likes: 0
From: New York City
2001 S500 and 2000 BMW 740I
Noise underneath my baby!!!
Hi fellow W220 owners,
This morning as my wife went to warm up the car I heard the most disturbing noise from my 2001 S500. It sounded like a rattling noise and with no idea where it's coming from I decided to explore. With minimal experience in noise recognition I was at a lost. I also notice this noise whenever we com to a stop and then take off at low acceleration.
Does anyone have a clue as to what/where/why/how this came to be and any sugestion how to eliminate this? Any suggestion is greately appreciated and thanks in advance..
This morning as my wife went to warm up the car I heard the most disturbing noise from my 2001 S500. It sounded like a rattling noise and with no idea where it's coming from I decided to explore. With minimal experience in noise recognition I was at a lost. I also notice this noise whenever we com to a stop and then take off at low acceleration.
Does anyone have a clue as to what/where/why/how this came to be and any sugestion how to eliminate this? Any suggestion is greately appreciated and thanks in advance..
Member
Joined: Dec 2008
Posts: 146
Likes: 0
From: VA USA
2000 S430 140k (07/11)
Could be number of things, here are some simple stuff you can check for:
Make sure your belt is still on.
Turn ac off and see if there is a difference.
Check the link below and read sections about motor mounts, cats and harmonic balancer.
https://mbworld.org/forums/s-class-w...tart-here.html
Make sure your belt is still on.
Turn ac off and see if there is a difference.
Check the link below and read sections about motor mounts, cats and harmonic balancer.
https://mbworld.org/forums/s-class-w...tart-here.html
Member
Joined: Sep 2009
Posts: 106
Likes: 1
2001 Mercedes S500
Secondary cats. I could almost bet money on it. Mine did the same. It was a metallic rattle at idle/low revs. sounded like a ball bearing in a tin jug.
I just had the secondary cats removed and a straight pipe installed in place of them. Car runs completly fine and sounds no different, well other than the rattle is gone.
I just had the secondary cats removed and a straight pipe installed in place of them. Car runs completly fine and sounds no different, well other than the rattle is gone.
Senior Member
Joined: Nov 2009
Posts: 310
Likes: 0
From: ON, CA
2003 S430
Secondary cats. I could almost bet money on it. Mine did the same. It was a metallic rattle at idle/low revs. sounded like a ball bearing in a tin jug.
I just had the secondary cats removed and a straight pipe installed in place of them. Car runs completly fine and sounds no different, well other than the rattle is gone.
I just had the secondary cats removed and a straight pipe installed in place of them. Car runs completly fine and sounds no different, well other than the rattle is gone.
Junior Member
Joined: Aug 2009
Posts: 22
Likes: 0
From: Huntersville, NC
S500
I bought the OEM reman part from my local MB dealer for $576. Other dealers were quoting $1000+ for the part because they didn't know about the the reman part being available. It was OEM Mercedes and bolted right on. I had my indy shop install it for $90.
