MBWorld.org Forums

C63 AMG (W204) 2008 - 2015
Sponsored by:
Sponsored by:

P0171 P0174 LEAN C63

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Sep 11, 2018 | 03:50 PM
Share
  #1  
scrappykoko63's Avatar
scrappykoko63
Thread Starter
Junior Member
 
Joined: Jan 2018
Posts: 45
Likes: 2
From: NYC
c63
P0171 P0174 LEAN C63
Replaced the Gasket, Bolts, PCV Valve. Still throwing up codes. Everytime i clear it the whole car starts shaking bugging out sometimes even dies unless i give it a rev. My question is what can it be for such a rough idle, it idles at 1k unless the air conditioner is on. Getting very poor mpg even in Comfort mode. This is my last straw with this car sadly. If i cant fix it im going to say my farewells with this car.
Reply
0
Old Sep 11, 2018 | 03:54 PM
Share
  #2  
chrisridebike8's Avatar
chrisridebike8
MBWorld Fanatic!
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Nov 2012
Posts: 2,768
Likes: 419
'10 C63
Maybe try O2 sensors. Make sure all the vacuum connections are installed properly since you disconnected them to take the intake mani off.
Reply
0
Old Sep 11, 2018 | 04:19 PM
Share
  #3  
skratch77's Avatar
skratch77
MBWorld Fanatic!
20 Year Member
Photogenic
Liked
Loved
 
Joined: Nov 2004
Posts: 6,697
Likes: 381
2005 E55
Did you inspect the throttle bodies? The plate is know to crack and let air through it.

they sell metal plates on Ebay for 250 if it's broken or I have an OEM one for 300 if you want it. I also have 2 OEM throttle bodies if they are the problem
Last edited by skratch77; Sep 11, 2018 at 04:21 PM.
Reply
0
Old Sep 11, 2018 | 05:19 PM
Share
  #4  
scrappykoko63's Avatar
scrappykoko63
Thread Starter
Junior Member
 
Joined: Jan 2018
Posts: 45
Likes: 2
From: NYC
c63
How can i check if its the throttle body???
Reply
0
Old Sep 11, 2018 | 05:21 PM
Share
  #5  
scrappykoko63's Avatar
scrappykoko63
Thread Starter
Junior Member
 
Joined: Jan 2018
Posts: 45
Likes: 2
From: NYC
c63
Originally Posted by skratch77
Did you inspect the throttle bodies? The plate is know to crack and let air through it.

they sell metal plates on Ebay for 250 if it's broken or I have an OEM one for 300 if you want it. I also have 2 OEM throttle bodies if they are the problem
how do i check if its the throttle body
Reply
0
Old Sep 11, 2018 | 06:04 PM
Share
  #6  
skratch77's Avatar
skratch77
MBWorld Fanatic!
20 Year Member
Photogenic
Liked
Loved
 
Joined: Nov 2004
Posts: 6,697
Likes: 381
2005 E55
Unfortunately you need to take the whole thing apart again.

the oil eats up the tb plate and cracks it
Reply
0
Old Sep 11, 2018 | 06:42 PM
Share
  #7  
scrappykoko63's Avatar
scrappykoko63
Thread Starter
Junior Member
 
Joined: Jan 2018
Posts: 45
Likes: 2
From: NYC
c63
Originally Posted by skratch77
Unfortunately you need to take the whole thing apart again.

the oil eats up the tb plate and cracks it
there is absolutely no shot spark plugs can throw these codes is there
Reply
0

Trending Topics

Old Sep 11, 2018 | 06:44 PM
Share
  #8  
skratch77's Avatar
skratch77
MBWorld Fanatic!
20 Year Member
Photogenic
Liked
Loved
 
Joined: Nov 2004
Posts: 6,697
Likes: 381
2005 E55
Originally Posted by Alex Abashidze


there is absolutely no shot spark plugs can throw these codes is there
I would change plugs and 02 sensors first
Reply
0
MB World Stories

The Best of Mercedes & AMG

story-0

6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

 Verdad Gallardo
story-1

Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

 Verdad Gallardo
story-2

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

 Verdad Gallardo
story-3

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-4

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

 Verdad Gallardo
story-5

Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

 Verdad Gallardo
story-6

Mercedes EQS Gets A Major Update: Everything You Need to Know

 Verdad Gallardo
story-7

5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

 Verdad Gallardo
story-8

Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

 Verdad Gallardo
story-9

10 Most Reliable Mercedes-Benz Models You Can Buy Used

 Verdad Gallardo
Old Sep 11, 2018 | 07:12 PM
Share
  #9  
scrappykoko63's Avatar
scrappykoko63
Thread Starter
Junior Member
 
Joined: Jan 2018
Posts: 45
Likes: 2
From: NYC
c63
Originally Posted by skratch77
I would change plugs and 02 sensors first
will do, o2 sensors are working fine i was thinking spark plugs fouled out
Reply
0
Old Oct 24, 2018 | 01:47 PM
Share
  #10  
scrappykoko63's Avatar
scrappykoko63
Thread Starter
Junior Member
 
Joined: Jan 2018
Posts: 45
Likes: 2
From: NYC
c63
Originally Posted by skratch77
I would change plugs and 02 sensors first
mercedes said it ended up being the o2 sensors would that be causing the loss of power aswell???
Reply
0
Old Oct 25, 2018 | 10:07 AM
Share
  #11  
Solo wing's Avatar
Solo wing
Super Member
 
Joined: Dec 2009
Posts: 748
Likes: 93
From: Dhahran, KSA
2020 E 300 Coupe and 2019 GLS 400
Originally Posted by Alex Abashidze


mercedes said it ended up being the o2 sensors would that be causing the loss of power aswell???
Yes, big time!! Since the ECU uses it to control the mixture.
Reply
0
Old Oct 26, 2018 | 02:19 PM
Share
  #12  
scrappykoko63's Avatar
scrappykoko63
Thread Starter
Junior Member
 
Joined: Jan 2018
Posts: 45
Likes: 2
From: NYC
c63
Originally Posted by Solo wing
Yes, big time!! Since the ECU uses it to control the mixture.
i just dont get why at idle itd rev up to 1000 and then when i put my ac on itd idle normal
Reply
0
Old Oct 26, 2018 | 03:42 PM
Share
  #13  
skratch77's Avatar
skratch77
MBWorld Fanatic!
20 Year Member
Photogenic
Liked
Loved
 
Joined: Nov 2004
Posts: 6,697
Likes: 381
2005 E55
Originally Posted by Alex Abashidze


i just dont get why at idle itd rev up to 1000 and then when i put my ac on itd idle normal
If you need oem amg throttle bodies and the oem plate that can crack and leak I have a set. I upgraded to 82mm throttle bodies with new bigger plate.



Reply
0
Back to Subforum
C63 AMG (W204)
View Next Unread
Shaking when pull over

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes, average.
Show Printable Version
Email this Page

Advanced Search

All times are GMT -4. The time now is 07:04 PM.

story-0
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-1
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-2
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-3
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-4
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-5
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-6
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-7
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-8
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE