Mercedes

Have Mercedes questions? Ask a mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

S430: Marty, you have help me with a few things on my 2001…

Customer Question
Marty, you have help me...
Marty, you have help me with a few things on my 2001 s-430. the car has over 275k miles on it. I took it in for a oil change a month ago. it started when I would go down hill and take my foot off the pedal, it would start ticking rattling like something was loose. now its doing it when I start the car and while driving. I jacked the car up to see if I could see if there was anything loose but it was nothing. it sounds like its coming from under the drivers side sit.
Submitted: 3 years ago.Category: Mercedes
Show More
Show Less
Ask Your Own Mercedes Question
Answered in 23 minutes by:
6/15/2015
Mercedes Mechanic: Marty, Mercedes Technician replied 3 years ago
Marty
Marty, Mercedes Technician
Category: Mercedes
Satisfied Customers: 55,290
Experience: Bosch Certified Master Tech. Over 35 years experience.
Verified
Hi, it sounds like the catalytic converter on the driver's side is rattling. This is very common on this model. You can use a rubber mallet to bang on the outside of the converter and most likely you will hear the rattling noise. The catalyst element in the converter begins to break up and will rattle like rocks in a tin can.

Let me know if you have any questions.

Marty
Ask Your Own Mercedes Question
Customer reply replied 3 years ago

Thanks! Is this a shop repair or can i do it..

Mercedes Mechanic: Marty, Mercedes Technician replied 3 years ago
This should be a shop repair.
Ask Your Own Mercedes Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a mercedes mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Marty Your Own Question
Marty
Marty
Marty, Mercedes Technician
Category: Mercedes
Satisfied Customers: 55,290
55,290 Satisfied Customers
Experience: Bosch Certified Master Tech. Over 35 years experience.

Marty is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible.

CharlesWalnut Creek, CA

As a single woman, I really appreciate an excellent and affordable opinion.
Thank you Geordie, I will not hesitate to contact justanswer in the future!

SueCharleston, WV

Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff.

JimCastleberry, FL

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

< Previous | Next >

Meet the Experts:

MB Paul

MB Paul

Mercedes Technician

3,567 satisfied customers

Qualified Mercedes Benz Diagnostic Technician - 20+ years experience - Workshop Foreman for Mercedes

Marty

Marty

Mercedes Technician

55,290 satisfied customers

Bosch Certified Master Tech. Over 35 years experience.

Lou P. master tech

Lou P. master tech

Mercedes Technician

4,460 satisfied customers

20 years Master Certified excellent fix rate and have access to factory wiring, and instructions.

Michael Warfield

Michael Warfield

Factory Mercedes-Benz Technician

3,132 satisfied customers

Mercedes-Benz Master Certified technician

Matt

Matt

Engineer

643 satisfied customers

Mechanical Engineer with 23 years experience in the auto industry, 8 yrs in formula 1 engine testing

promerc

promerc

mercedes diagnostic technician

553 satisfied customers

Qualified mercedes diagnostic technician & service team manager , ATA registered Master tech

Hipo64

Hipo64

Mercedes Technician

444 satisfied customers

Work and diagnose electronics on daily basis.

< Previous | Next >

Related Mercedes Questions
Mercedes ML 430, one owner, but has 275k on it. how will
Mercedes ML 430, one owner, but has 275k on it. how long will these vehicles go for. It looks like its been well taken care of… read more
Marty
Marty
Mercedes Technician
Associate Degree
55,290 satisfied customers
Mercedez Benz S430: mercedez benz 2001 S430 The has started
mercedez benz 2001 S430 The has started making this rattling sound when starting and while excelarating. like something is loose. I checked my oil and it was low.… read more
Marty
Marty
Mercedes Technician
Associate Degree
55,290 satisfied customers
S420: There is a ticking I hear when I go down hill foot off
There is a ticking I hear when I go down hill foot off the gas once I put my foot back to the pedal it stops...is that has to do with the exhaust… read more
Marty
Marty
Mercedes Technician
Associate Degree
55,290 satisfied customers
E320: Hello, Pete:I have a slight rattle under the front
Hello, Pete: I have a slight rattle under the front driver's side, that appears to disappear in the summer months and is more pronounced in the winter months. Several years ago I had an accident that … read more
Marty
Marty
Mercedes Technician
Associate Degree
55,290 satisfied customers
Ml320: My car makes a rattling noise under the passenger side
My car makes a rattling noise under the passenger side of the car and I am experiencing smoke coming from exhaust. The smoke just started when my son added to much oil. The rattling noise started abou… read more
Marty
Marty
Mercedes Technician
Associate Degree
55,290 satisfied customers
Hi Marty. About my 1993 500sel. Before you were right about
Hi Marty. About my 1993 500sel. Before you were right about crank position sensor. Thank you for that again. Now. Car drives excellent, BUT if I don't drive it for more then 3-4 days, it will start an… read more
Marty
Marty
Mercedes Technician
Associate Degree
55,290 satisfied customers
528i: 1997 BMW 528i E39: Hi Marty, just wanted to ask about
1997 BMW 528i E39: Hi Marty, just wanted to ask about a noise from the engine bay like a 'marbles in a tin can'. From idle to revving it rattles with increase rpm, but it goes always about 3K rpm. My … read more
Marty
Marty
Mercedes Technician
Associate Degree
55,290 satisfied customers
S500: The last time the car had a tune up was in 2010. The
The last time the car had a tune up was in 2010. The problem started in 2009. Other owners witht he same make and year as my car have written in stating after this car sits for days, it will do this a… read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
2004 clk320: my transmission..hill..I took my foot off the brake pedal
Good morning! My 2004 clk 320 died on me yesterday just as I got home and I am not sure if its my transmission. I pulled up on the hill in front of my home to unload groceries, I put the gear in park … read more
Michael Warfield
Michael Warfield
Factory Mercedes-Benz Technician
Vocational, Technical or Trade Scho
3,132 satisfied customers
2003 mercedes: problem in morning..car seem like it was loosing power.
had a problem in morning with my 2003 mercedes s-430.. when I pressed on the accelerator.. the car seem like it was loosing power..… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
S 55: it reved..dealer replaced..engine control..500 miles
I took my S 55 to the dealer because it reved out of control when started in the morning. Have had problems similar and the dealer replaced the engine control mod and 5k miles ago the cpu. I picked it… read more
Marty
Marty
Mercedes Technician
Associate Degree
55,290 satisfied customers
2002 clk430: / 30k miles..ticking (valve ) noise..1500 rpm..goes away
Hi, I have a 2002 CLK 430 w/ 30k miles and have a ticking (valve) noise that comes in at about 1500 rpm and goes away at about 2200. Oil has been changes every 7k with Mobil 1 0W-40. Noise is more pro… read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
2001 clk430: 000 miles..fuel gauge..replacing the fuel sending unit
I own a 2001 CLK 430, bough new and has 22,000 miles, the fuel gauge has not worked now for about 6 months took it to the dealer and Mercedes will not help because of its age, could you tell me if rep… read more
Marty
Marty
Mercedes Technician
Associate Degree
55,290 satisfied customers
Mercedes: tie..clk..I took off the lug nuts but the wheel wont budge
how do I change the tie on my mercedes 350 clk? I took off the lug nuts but the wheel won't budge and doesn't spin.… read more
Marty
Marty
Mercedes Technician
Associate Degree
55,290 satisfied customers
clk430: petrol..Intermittently..I hit accelerator the rev count goes
Hi There, Have a CLK 430 Atomatic petrol 2002 after a bump in the road having engine problems. Intermittently the engine goes weird. When I hit accelerator the rev count goes up but no power. When I f… read more
Marty
Marty
Mercedes Technician
Associate Degree
55,290 satisfied customers
Special: the vacuum line on trhe back of the intake release .... is it
how does the vacuum line on trhe back of the intake release .... is it a special order part? I broke it while changing the MAF 2001 merceds s class 430… read more
Marty
Marty
Mercedes Technician
Associate Degree
55,290 satisfied customers
2002 S500: rattling noise..the tranny is..noise goes away..warmed
When I start my 2002 S500, there is a rattling noise near where the tranny is. But, the noise goes away when the car is warmed up. What could this be. The Catalytic Converters were both replaced a yea… read more
Marty
Marty
Mercedes Technician
Associate Degree
55,290 satisfied customers
1984 500SEL...car dies at idle..dying when I take my foot off the gas.
I have a 1984 500SEL. The car dies at idle but seems to run alright while my foot is on the gas. It also is dying when I take my foot off the gas. I just had a new catalytic converter assembly install… read more
Marty
Marty
Mercedes Technician
Associate Degree
55,290 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x