C36 AMG, C43 AMG (W202) 1995 - 2000

started tear down for paint

Old Oct 13, 2011 | 04:12 PM
  #551  
Saaboteur's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Photogenic
Photoriffic
Shutterbug
 
Joined: May 2009
Posts: 1,846
Likes: 29
From: Canada
eclectic assortment of cars
Well, the problem is that it's not running properly or long enough to throw any codes! It will fire and then die. It can be kept running, very very poorly, if the throttle is prodded - but then you get into the dangerous sort of situation with the cat glowing red hot and again singing the heat shielding. I am certain the plug wires and coils are good. They ran when they were on the 43 - and I never took the wires off the coils, just off the plugs. I double checked those when I had the car, and I'm sure the tech would have done the same - and they've had the car since last week. The tech mentioned that the older cars don't show as much info on Star as the later cars. I don't know if he's looked at the Star with the car half idling though.

And I concur re: compression - I don't think a half point is going to kill the day, it should still run. As far as the car knows, it still thinks it's a C43, it shouldn't know what motor is under the hood.
Reply
Old Oct 13, 2011 | 04:18 PM
  #552  
911mot's Avatar
Junior Member
 
Joined: Jul 2011
Posts: 18
Likes: 0
c43 amg
Glad to hear the engine is healthy and compression is ok. Phew!
Is it only missing/lumpy only on the one bank?

The only bit of info I can find is the firing order changed for the w211 55k..

W210 E55 Normally aspirated: 1-5-4-8-6-3-7-2

W211 E55 V8 kompressor: 1-5-4-2-6-3-7-8

Although this shouldnt apply here, just food for thought
Reply
Old Oct 13, 2011 | 04:40 PM
  #553  
cm60k's Avatar
MBWorld Fanatic!
15 Year Member
Photogenic
Photoriffic
Shutterbug
 
Joined: Aug 2006
Posts: 7,053
Likes: 398
From: A.D., U.A.E
2000 (W202 C200) & 2000 (W202 C55)
Originally Posted by LantanaML320
The latter 55's had 11:1 compression and the earlier ones had 10.5:1

I don’t know about those compression #s before, Thankss alot......

ZAYED,,
Reply
Old Oct 13, 2011 | 05:02 PM
  #554  
DRBC43AMG's Avatar
MBWorld Fanatic!
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2010
Posts: 5,889
Likes: 323
From: Land of mountains, cheese, chocolate and watches
12' W204 C63 AMG coupe "T-Rex", 12' W451 Smart Fortwo Pulse (99' W202 C43 AMG + Ultima Can-Am sold)
You say the engine starts and dies shortly after, but it can be kept alive prodding the accelerator. What I don't understand is how the cat becomes red hot in such a short period of time. Need to know the definition of short (in length of time)? Which cats are you using? The old c43's I assume... Are the oxygen sensors operational?
Reply
Old Oct 13, 2011 | 05:12 PM
  #555  
John-in-Dallas's Avatar
Member
 
Joined: May 2007
Posts: 119
Likes: 0
From: Dallas
'99 C43
PHP Code:
Glad to hear the engine is healthy and compression is ok. Phew!
Is it only missing/lumpy only on the one bank?

The only bit of info I can find is the firing order changed for the w211 55k..

W210 E55 Normally aspirated: 1-5-4-8-6-3-7-2 

W211 E55 V8 kompressor: 1-5-4-2-6-3-7-8

Although this shouldnt apply here, just food for thought 
I was just flipping through my owners manual yesterday looking for how to reset the flexible service system reminder when I came across the C43 firing order in the section with the engine specs.

According to the owners manual, the C43 firing order is 1-5-4-2-6-3-7-8

It doesn't make sense that it would be different than a W210 E55 motor as you've noted above, but if true, could that be the problem?
Reply
Old Oct 13, 2011 | 05:45 PM
  #556  
LantanaML320's Avatar
Member
 
Joined: Mar 2007
Posts: 196
Likes: 1
From: Lantana TX
2004 Chrysler Crossfire
Originally Posted by John-in-Dallas
PHP Code:
Glad to hear the engine is healthy and compression is ok. Phew!
Is it only missing/lumpy only on the one bank?

The only bit of info I can find is the firing order changed for the w211 55k..

W210 E55 Normally aspirated: 1-5-4-8-6-3-7-2 

W211 E55 V8 kompressor: 1-5-4-2-6-3-7-8

Although this shouldnt apply here, just food for thought 
I was just flipping through my owners manual yesterday looking for how to reset the flexible service system reminder when I came across the C43 firing order in the section with the engine specs.

According to the owners manual, the C43 firing order is 1-5-4-2-6-3-7-8

It doesn't make sense that it would be different than a W210 E55 motor as you've noted above, but if true, could that be the problem?
UH OH.. I am double checking this. If it is the case, it is not a show stopper.
Reply
Old Oct 13, 2011 | 05:45 PM
  #557  
Saaboteur's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Photogenic
Photoriffic
Shutterbug
 
Joined: May 2009
Posts: 1,846
Likes: 29
From: Canada
eclectic assortment of cars
The original C43 cats are in the car. They glow hot after several minutes of poor idling. The misfiring is leading to excessive unburnt fuel being sent through the chambers and into the cats, from my understanding.

Anyone have any idea as to changes in firing order between 113.980s?
Reply
Old Oct 13, 2011 | 06:00 PM
  #558  
911mot's Avatar
Junior Member
 
Joined: Jul 2011
Posts: 18
Likes: 0
c43 amg
https://mbworld.org/forums/c36-amg-c...ou-cant-4.html

Best way is to check what's stamped on the 55's camcovers and compare to the original
Reply
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 Oct 13, 2011 | 06:36 PM
  #559  
LantanaML320's Avatar
Member
 
Joined: Mar 2007
Posts: 196
Likes: 1
From: Lantana TX
2004 Chrysler Crossfire
Too much conflicting info out there to confirm. check valve covers of both engine. I think both engines are 1-5-4-2-6-3-7-8. I had heard that the 55K's had a different firing order but never saw it for myself. this car is acting like a a car with a screwed up firing order though.
Reply
Old Oct 13, 2011 | 06:53 PM
  #560  
Saaboteur's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Photogenic
Photoriffic
Shutterbug
 
Joined: May 2009
Posts: 1,846
Likes: 29
From: Canada
eclectic assortment of cars
I don't buy it that there would be a different firing order. Okay, different between 55NA and 55K, but those are apples and oranges. I can't get over to the shop to check, but I have asked them to have a look.
Reply
Old Oct 13, 2011 | 07:12 PM
  #561  
911mot's Avatar
Junior Member
 
Joined: Jul 2011
Posts: 18
Likes: 0
c43 amg
started tear down for paint-img_0027.jpg
Looks like 1 5 4 2 6 3 7 8

so that leaves us
Reply
Old Oct 14, 2011 | 03:18 AM
  #562  
DRBC43AMG's Avatar
MBWorld Fanatic!
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2010
Posts: 5,889
Likes: 323
From: Land of mountains, cheese, chocolate and watches
12' W204 C63 AMG coupe "T-Rex", 12' W451 Smart Fortwo Pulse (99' W202 C43 AMG + Ultima Can-Am sold)
Originally Posted by Saaboteur
I don't buy it that there would be a different firing order. Okay, different between 55NA and 55K, but those are apples and oranges. I can't get over to the shop to check, but I have asked them to have a look.
Vincent, I'm at a lost with your problem, but suggest you try sending a PM to Olly (BlackC55) on the MBClub UK http://www.mbclub.co.uk/forums/members/blackc55.html
He is a very qualified MB technician and has done several 55 swaps recently with no problems, including his own C43. He could have an answer or at least some pointers to check out
Reply
Old Oct 14, 2011 | 07:22 AM
  #563  
911mot's Avatar
Junior Member
 
Joined: Jul 2011
Posts: 18
Likes: 0
c43 amg
Ok, so I just stripped the wiring loom off the 43 and noticed that the front left injector and the actuator on the inlet manifold have the same connector and could quite easily be swapped, but nothing else sprung to mind
Reply
Old Oct 14, 2011 | 11:52 AM
  #564  
LantanaML320's Avatar
Member
 
Joined: Mar 2007
Posts: 196
Likes: 1
From: Lantana TX
2004 Chrysler Crossfire
Here are a couple more things to consider. assuming your car is an OBDII car you cannot have an engine run like crap and make a CAT turn red without throwing a code. Even if your CEL did not come on, events are stored in the ECU. You can go into the ECU and check "Stored Events". Another problem is that once you turn a CAT bright red you have probably melted it and it is now pluged which will make the engine run bad as well. You really need to get a look at what going on cylinder by cylinder with a SDS. It sounds like the problem is on the left side which should be tellng your techs something. I have to say that I am losing faith in your techs. The right electronic equipment hooked up with the right tech interpreting the data should be able to tell you exactly what the engine is doing and know what the possible causes are and eliminate those causes one by one until the problem is found.

to get the CAT to glow red can you are most likely dumping fuel on the left side. Your CAT is probably toast now and needs to be checked. check the sparks plugs as well and know how to read them. I am very worried about a shop that can't read what is going on with the SDS or go back and look at the freeze frames and stored events, that would pull a transmisison before doing a compression check, and has not at least read the plugs. I would find a better shop before things get worse.
Reply
Old Oct 14, 2011 | 12:07 PM
  #565  
nd4spd13's Avatar
Super Member
 
Joined: Dec 2009
Posts: 940
Likes: 0
From: Chapel Hill, NC/Montreal, QC
1995 C36 AMG, 1998 C43 AMG
Also have you considered unbolting the exhaust pipe from the down pipe? This would temporarily alleviate the glowing-cat problem potentially long enough for it to throw some codes (other than the ones it would throw for having the pipe disconnected) and also let you rule out that the cats have somehow been screwing things up.
Reply
Old Oct 14, 2011 | 12:10 PM
  #566  
Saaboteur's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Photogenic
Photoriffic
Shutterbug
 
Joined: May 2009
Posts: 1,846
Likes: 29
From: Canada
eclectic assortment of cars
The exhaust has been disconnected for a while now, actually, and the problem persists. Fires, then dies. I am out of ideas.
Reply
Old Oct 14, 2011 | 12:16 PM
  #567  
LantanaML320's Avatar
Member
 
Joined: Mar 2007
Posts: 196
Likes: 1
From: Lantana TX
2004 Chrysler Crossfire
Tell them to go into the ECU and look at "stored events". They don't even need to start the car, just have the key on. The best idea may be to talk to another indy MB shop.
Reply
Old Oct 14, 2011 | 04:11 PM
  #568  
DRBC43AMG's Avatar
MBWorld Fanatic!
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2010
Posts: 5,889
Likes: 323
From: Land of mountains, cheese, chocolate and watches
12' W204 C63 AMG coupe "T-Rex", 12' W451 Smart Fortwo Pulse (99' W202 C43 AMG + Ultima Can-Am sold)
Get talking to Olly in the UK....
Reply
Old Oct 15, 2011 | 02:49 AM
  #569  
Saaboteur's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Photogenic
Photoriffic
Shutterbug
 
Joined: May 2009
Posts: 1,846
Likes: 29
From: Canada
eclectic assortment of cars
Okay, I am going through everything over and over again in my head. I spoke with another mechanic buddy, and he generally reminded me of going back to 'first principles' - ie. to examine the most obvious, basic possibilities. He got me thinking about the intake manifold and its butterflies.

So nothing else on the engine is obviously wrong - cam timing, compression, flywheel, coils, wires, etc. So what else did I muck around with? The intake manifold is really the only obvious part. Yes I replaced the front and rear main seals, but those aren't going to lead to running issues. Could there be some possibility to something buggered up in the intake manifold itself? In one regard, it's a simple device, but on the other, it's a bit more complicated than a typical one piece, cast alloy plenum with runners and a place for the throttle body to bolt up to.

All I can think of at the moment.
Reply
Old Oct 15, 2011 | 03:03 AM
  #570  
Saaboteur's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Photogenic
Photoriffic
Shutterbug
 
Joined: May 2009
Posts: 1,846
Likes: 29
From: Canada
eclectic assortment of cars
The other thing I thought of was plugs - but these are probably fine too. I haven't yet cross checked, but I'm guessing the 55 would take the same plugs as the 43...
Reply
Old Oct 15, 2011 | 03:54 AM
  #571  
DRBC43AMG's Avatar
MBWorld Fanatic!
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2010
Posts: 5,889
Likes: 323
From: Land of mountains, cheese, chocolate and watches
12' W204 C63 AMG coupe "T-Rex", 12' W451 Smart Fortwo Pulse (99' W202 C43 AMG + Ultima Can-Am sold)
Ahh, that could be getting warmer. I talked about a possible leak in the intake manifold in one of my previous posts and a PITTA to assemble again without leaks. If you have an untouched manifold (could be from the old 43, as I recall you dismantled the one from the 55?), get it on the 55 engine and check.
Reply
Old Oct 15, 2011 | 08:28 AM
  #572  
ProjectC55's Avatar
MBWorld Fanatic!
 
Joined: Feb 2004
Posts: 5,475
Likes: 5
From: City with Tall buildings!
C43/55,2k11 Volvo S60 T6AWD,2k Audi B5 S4,95 Eagle Talon Tsi AWD 500+awhp
Originally Posted by Saaboteur
Okay, I am going through everything over and over again in my head. I spoke with another mechanic buddy, and he generally reminded me of going back to 'first principles' - ie. to examine the most obvious, basic possibilities. He got me thinking about the intake manifold and its butterflies.

So nothing else on the engine is obviously wrong - cam timing, compression, flywheel, coils, wires, etc. So what else did I muck around with? The intake manifold is really the only obvious part. Yes I replaced the front and rear main seals, but those aren't going to lead to running issues. Could there be some possibility to something buggered up in the intake manifold itself? In one regard, it's a simple device, but on the other, it's a bit more complicated than a typical one piece, cast alloy plenum with runners and a place for the throttle body to bolt up to.

All I can think of at the moment.
that's why I said if you have a spare mani give it a try. It's easy to replace.
Reply
Old Oct 15, 2011 | 08:34 AM
  #573  
LantanaML320's Avatar
Member
 
Joined: Mar 2007
Posts: 196
Likes: 1
From: Lantana TX
2004 Chrysler Crossfire
If you are certain about the other things you at least have a good long block. I would be swapping the other parts from the 43 one at a time and test the engine. Like the previous poster said, swap the intake with one that has not been apart, then pull the plugs and look at each one and replace with the 43 plugs, then swap the injectors. While doing this don't bolt the exhaust back up uless you verify the Cat's aren't melted. The other mechanic you talked to is leading you on the right path.
Reply
Old Oct 15, 2011 | 11:27 AM
  #574  
Saaboteur's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Photogenic
Photoriffic
Shutterbug
 
Joined: May 2009
Posts: 1,846
Likes: 29
From: Canada
eclectic assortment of cars
Yeah the only problem is that I don't have an untouched manifold, I had to scavenge parts to build up a decent one.

The plugs in there are the ones I had on the 43 since only last fall.

How to check a cat'a health visually? The down pipes are still off.
Reply
Old Oct 15, 2011 | 01:37 PM
  #575  
cm60k's Avatar
MBWorld Fanatic!
15 Year Member
Photogenic
Photoriffic
Shutterbug
 
Joined: Aug 2006
Posts: 7,053
Likes: 398
From: A.D., U.A.E
2000 (W202 C200) & 2000 (W202 C55)
Is there any changes if you dissconnect the O2 sensors while the car running......??

ZAYED,,
Reply

Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 9 votes, 5.00 average.


All times are GMT -4. The time now is 02:31 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