Rattling, ticking, clanging, knocking noise from engine
#1
Rattling, ticking, clanging, knocking noise from engine
01 S430 101k miles
It was happening periodically, now it is more persistent. I know its hard to diagnose a noise on a web-forum, but most of us seem to have similar problems associated w/ w220's. I guess I would describe it more of a rattling, and its more distinguishable when in gear, but when I put it in park it's still there. If I had to describe it on another vehicle I would say it almost sounds like a heat shield rattling on a Catalayc converter.
It was happening periodically, now it is more persistent. I know its hard to diagnose a noise on a web-forum, but most of us seem to have similar problems associated w/ w220's. I guess I would describe it more of a rattling, and its more distinguishable when in gear, but when I put it in park it's still there. If I had to describe it on another vehicle I would say it almost sounds like a heat shield rattling on a Catalayc converter.
#3
01 S430 101k miles
It was happening periodically, now it is more persistent. I know its hard to diagnose a noise on a web-forum, but most of us seem to have similar problems associated w/ w220's. I guess I would describe it more of a rattling, and its more distinguishable when in gear, but when I put it in park it's still there. If I had to describe it on another vehicle I would say it almost sounds like a heat shield rattling on a Catalayc converter.
It was happening periodically, now it is more persistent. I know its hard to diagnose a noise on a web-forum, but most of us seem to have similar problems associated w/ w220's. I guess I would describe it more of a rattling, and its more distinguishable when in gear, but when I put it in park it's still there. If I had to describe it on another vehicle I would say it almost sounds like a heat shield rattling on a Catalayc converter.
I had a similar sound on my 215. It would sound like metallic rattling, like a heat shield or loose exhaust bracket. More pronounced in gear than in park, just like yours. When your car is in gear and ready to drive, open the drivers door and confirm the sound you hear is from under the car. If so, my guess is one or both of your cats are bad. The ceramic material inside the cats can get brittle and deteroriate over time causing this type of noise. If you can get your car on ramps or jack stands, take a peek under the car to confirm the shields and brackets are good. Also, try tapping on the cats and if you hear a "beans in a can" sound, then your cats are probably shot. Good luck
#4
ok, I popped the hood this weekend, and it's definately NOT coming from the engine. I got on my hands an knees and listened from under the car, and that is definately where it's coming from.
How much should I expect to pay for a cat replacement for one or both?
How much should I expect to pay for a cat replacement for one or both?
#5
MBWorld Fanatic!
Joined: Jun 2002
Posts: 1,284
Likes: 37
From: North Carolina
2003 S500 - Toyota Corolla (in the rain)
I believe the cats are warranteed by Mercedes for 80k miles or 8 years. I just had both mine replaced on a 2003 S500 with 55k miles and there was absolutely no cost to me from the dealer.
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#8
http://www2.partstrain.com/store/?N=...ND(universal:1))
Make sure you know what side is going bad.
Driver and Passenger sides are different...and theres a price diff also.
http://www.1motormart.com/unified/?N...20Benz&md=S430
i have ordered them from here for my W210, everything fit great, 90$ change at any indi shop
Make sure you know what side is going bad.
Driver and Passenger sides are different...and theres a price diff also.
http://www.1motormart.com/unified/?N...20Benz&md=S430
i have ordered them from here for my W210, everything fit great, 90$ change at any indi shop
#10
http://www2.partstrain.com/store/?N=...ND(universal:1))
Make sure you know what side is going bad.
Driver and Passenger sides are different...and theres a price diff also.
http://www.1motormart.com/unified/?N...20Benz&md=S430
i have ordered them from here for my W210, everything fit great, 90$ change at any indi shop
Make sure you know what side is going bad.
Driver and Passenger sides are different...and theres a price diff also.
http://www.1motormart.com/unified/?N...20Benz&md=S430
i have ordered them from here for my W210, everything fit great, 90$ change at any indi shop
#11
Slight knocking sound during warm up.
My 2004 S430 with 109k miles runs beautiful except during warm up, it has a slight knocking sound like preignition (pinging) it disappears after about a mile or so and then purrs like a content kitten. It does it under load, not at idle. The purge valve does make a ticking noise at start up during idle, but that also disappears after a little while. It does not use oil and the oil stays very clear, It is serviced with 5W30 Syn. is this common?
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