C240 in trouble
Thread Starter
Member
Joined: Jun 2009
Posts: 77
Likes: 0
C240
C240 IN TROUBLE, HELP NEEDED
Hi Folks,
Im Really In Need Of Help Regarding My 02 C240's Rough Idle And Ticking Sound Comming From Driver Side When Im At Full Stop How Ever Im Not Getting Any Cel Or Any Warning Lights. I Took The Car To Few Indis Who Work On German Cars But They Were Unable To Diagnose The Problem, Since I Was Really Getting Annoyed By The Rough Idle I Decided To Take The Car To The Stealer Hoping They Could Atleast Identify And Diagnose My Problem And Guess What They Couldnt!!!!
Here is stealers report
here is a video of engin idling (sorry for the bad quality i will try to upload a better quality one as soon as i get a chance ) you can hear the ticking sound
http://www.youtube.com/watch?v=mA-pc4ramKw
just to add i have cleaned the TB and maf as well and still no difference.
air filters and all spark plugs changed 15K ago.
replaced both cats 10K ago
and i only use mostly 94 and rarely 91 gas only.
you guys are my last hope to get this thing fixed as its really getting on my nerves
thanks
Im Really In Need Of Help Regarding My 02 C240's Rough Idle And Ticking Sound Comming From Driver Side When Im At Full Stop How Ever Im Not Getting Any Cel Or Any Warning Lights. I Took The Car To Few Indis Who Work On German Cars But They Were Unable To Diagnose The Problem, Since I Was Really Getting Annoyed By The Rough Idle I Decided To Take The Car To The Stealer Hoping They Could Atleast Identify And Diagnose My Problem And Guess What They Couldnt!!!!
Here is stealers report
here is a video of engin idling (sorry for the bad quality i will try to upload a better quality one as soon as i get a chance ) you can hear the ticking sound
http://www.youtube.com/watch?v=mA-pc4ramKw
just to add i have cleaned the TB and maf as well and still no difference.
air filters and all spark plugs changed 15K ago.
replaced both cats 10K ago
and i only use mostly 94 and rarely 91 gas only.
you guys are my last hope to get this thing fixed as its really getting on my nerves
thanks
Last edited by sinaa; Mar 1, 2011 at 10:20 AM.
Senior Member
Joined: Jan 2010
Posts: 456
Likes: 4
From: Canada
2003 c240 4matic wagon
the ticking sound is normal kinda its the purge valve on the drivers side fender mine dose it too
https://mbworld.org/forums/c-class-w...m-already.html see post # 5 for a pic (not mine)
https://mbworld.org/forums/c-class-w...m-already.html see post # 5 for a pic (not mine)
Thread Starter
Member
Joined: Jun 2009
Posts: 77
Likes: 0
C240
the ticking sound is normal kinda its the purge valve on the drivers side fender mine dose it too
https://mbworld.org/forums/c-class-w...m-already.html see post # 5 for a pic (not mine)
https://mbworld.org/forums/c-class-w...m-already.html see post # 5 for a pic (not mine)
Thread Starter
Member
Joined: Jun 2009
Posts: 77
Likes: 0
C240
MBWorld Fanatic!
Joined: Sep 2010
Posts: 1,089
Likes: 6
From: Salt Lake City, UT
2010 Mercedes-Benz E350
This sounds like a vacuum leak to me. I haven't experienced this issue with a MB, but have with a BMW. Check for vacuum leaks on all the lines that run past the MAF on top of the engine as those are the most likely culprits. Other than that I'm at a loss.
Thread Starter
Member
Joined: Jun 2009
Posts: 77
Likes: 0
C240
shouldnt a vacuum leak throw a CEL??? i asked the stealer and they told me vacuum leaks throw a CEL
Trending Topics
MBWorld Fanatic!
Joined: Sep 2010
Posts: 1,089
Likes: 6
From: Salt Lake City, UT
2010 Mercedes-Benz E350
Sometimes yes, sometimes no. In theory anything that would make your engine idle like that should throw a code, but in practice that doesn't seem to be the case. On board diagnostics are great, when they work, but they've also made a lot of mechanics lazy.
My favorite method for running these things down is to let it idle, and start moving things around in the engine bay (I'm talking hoses, and lines) sometimes you stumble across the issue... Sometimes you get your hands dirty for nothing.
My favorite method for running these things down is to let it idle, and start moving things around in the engine bay (I'm talking hoses, and lines) sometimes you stumble across the issue... Sometimes you get your hands dirty for nothing.
MB World Stories
The Best of Mercedes & AMG
7 Craziest Things AMG Gas Ever Built
Verdad Gallardo
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know
Verdad Gallardo
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
Thread Starter
Member
Joined: Jun 2009
Posts: 77
Likes: 0
C240
Sometimes yes, sometimes no. In theory anything that would make your engine idle like that should throw a code, but in practice that doesn't seem to be the case. On board diagnostics are great, when they work, but they've also made a lot of mechanics lazy.
My favorite method for running these things down is to let it idle, and start moving things around in the engine bay (I'm talking hoses, and lines) sometimes you stumble across the issue... Sometimes you get your hands dirty for nothing.
My favorite method for running these things down is to let it idle, and start moving things around in the engine bay (I'm talking hoses, and lines) sometimes you stumble across the issue... Sometimes you get your hands dirty for nothing.
Senior Member
Joined: Jan 2010
Posts: 456
Likes: 4
From: Canada
2003 c240 4matic wagon
did it idle ok BEFORE you removed the tb???
if so your problem is that
anothervac leak finding method ive used is a piece of small hose/tubeing put one end in your ear and poke around the engine vac lines if its a decent leak you will hear it
also be SURE that the hose dose not get grabbed by moving parts!!!!
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Any vacuum leak can cause this - Should throw a fuel trim code but does not always do this.
If the purge valve does not shut off completely. It can cause this.
A chattering TB actuator can also cause this. It does not throw a code & replacement of the TB is the only fix.
If the purge valve does not shut off completely. It can cause this.
A chattering TB actuator can also cause this. It does not throw a code & replacement of the TB is the only fix.
MBWorld Fanatic!
Joined: Sep 2010
Posts: 1,089
Likes: 6
From: Salt Lake City, UT
2010 Mercedes-Benz E350
I think we have a consensus! Contact's suggestion is spot on, isolating the sound with a tube works really well. I have used a shotgun mic and headphones before, and that works well too, except you hear so many mechanical sounds that you start worrying that your engine might be falling apart.
Thread Starter
Member
Joined: Jun 2009
Posts: 77
Likes: 0
C240
thanks every one for ur replys
here is better video of my running engin during the day
http://www.youtube.com/watch?v=VX_jeF0zvUQ
here is better video of my running engin during the day
http://www.youtube.com/watch?v=VX_jeF0zvUQ
Newbie
Joined: Jan 2011
Posts: 4
Likes: 0
2002 w203
Purge Valve
Mine clicks a bit. See this...
https://mbworld.org/forums/c-class-w...-its-part.html
it has the part number.
https://mbworld.org/forums/c-class-w...-its-part.html
it has the part number.
Super Moderator
Joined: Mar 2007
Posts: 5,295
Likes: 22
From: VA
THE C350
Thread Starter
Member
Joined: Jun 2009
Posts: 77
Likes: 0
C240
