Cars been choking lately
Thread Starter
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S550 on order
yeah the ones i have are probably the cheapest of the cheap...the airfilters were...it was a couple in vancouver who owned the car before me so well..you guys from vancouver know how people treat their cars lol...going to buy some from weistec and throw those in...just got the CF airintake installed so maybe that will help some or stop the choking..I did notice the charcoal filters are pretty black and look worn and old..could that be what was causing it maybe?
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From: Walnut Creek, CA
Vivid Racing '09 C63 AMG
Unfortunately, the short is going to be difficult if not impossible to diagnose just because it doesn't occur with any regular frequency and you can't replicate it.
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10 C six trizzle
the charcoal filters are normally dark in color since they have charcoal in them. they are not available separately. they are not there to filter clean air to the engine. thats what the engine air filters are for. the charcoals are just to store fuel vapor from the intake and injectors when its turned off. thats why you can remove them with no consequences. Despite what others on here say, if you dont screw things up and put them back together properly they will not affect the way the car runs or cause check engine lights. Although to any ordinary automotive enthusiast this seems comical in difficulty it can be screwed up and is regularly.
Having said that - no i dont think that has anything to do with your problem. You mentioned you just put carbon air boxes in? did they come with the maf sensors already installed? can you switch back to the original ones and see if it makes a difference.
Having said that - no i dont think that has anything to do with your problem. You mentioned you just put carbon air boxes in? did they come with the maf sensors already installed? can you switch back to the original ones and see if it makes a difference.
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S550 on order
IDK why but after I installed the CF airfilters ...no CEL...car said put oil in...put oil in....now CEL won't turn off? the car is running perfectly fine too...I checked the MAF on one of the CF boxes and it was wiggly a tiny tiny bit...think thats why?
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'08 C63, '10 GT-R
It's fine...hopefully it's something simple...you know what I'm thinking...and it might sound stupid...but conditions...I live in an area with a lot of moisture in the morning...and mine usually only does it when it's morning-ish too...is that a possibility? or am i just making my self sound stupid
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'08 C63, '10 GT-R
My CEL had recently turned on as well (no blinking) and the dealer says that my intake manifold gaskets were leaking as well. So I'm not sure of the difference between your problem causing the CEL to blink and mine...
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S550 on order
my intake manifold leaked too! but my CEL never came on...does yours whistle? If so I'd get it fixed ASAP because the cars performence WILL go down hill...it won't harm anything else (i drove 2500KM with a blowin manifold and beat on the car) but your gas milage will get very bad if you hold out too long and the car will get sluggish atleast thats what happen too me while i was waiting for the new manifold
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From: Walnut Creek, CA
Vivid Racing '09 C63 AMG
My leak didn't whistle. It was around a $500 job to repair it. With some service coupons I found online thanks to biglee73 ($50 for $100) I used two and dropped it to the $300s.
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From: Carrollton, TX
2016 C63S AMG SEDAN
I have to revive this thread. I am experiencing basically identical symptoms with my C63 now. Choking out at highway speeds, does kind of feel like misfire?? Cruising along 75-85 range in S mode, if I feather in the gas pedal I can get rid of it. Took it to MB Plano when it did have CEL once and was acting up pretty bad. Of course the rep told me its all the aftermarket stuff making my emissions go haywire....I pulled the ECU and sent it back to Eurocharged. They fixed it or flashed whatever you call it. since I reinstalled it it was okay but starting to act up again now. Mild hesitation, choking at highway speeds. Weird and inconsistent...Any local recommendations on where I can take it to have checked out roadtalonsi?
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2010 C63
You can try Eurosport Automotive on Coit just north of GB tollway. They installed my rotors and pads just fine and cheaper than Autoscope. Big clean garage with lots of nice cars up on the racks. I have used them only this one time so not a lot of experience with them. If you choose to go there then let me/us know how it went so we can pool our knowledge of good local places. I am also going to call them on Monday to get a quote on installing my new KW V3's.
Thread Starter
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S550 on order
I have to revive this thread. I am experiencing basically identical symptoms with my C63 now. Choking out at highway speeds, does kind of feel like misfire?? Cruising along 75-85 range in S mode, if I feather in the gas pedal I can get rid of it. Took it to MB Plano when it did have CEL once and was acting up pretty bad. Of course the rep told me its all the aftermarket stuff making my emissions go haywire....I pulled the ECU and sent it back to Eurocharged. They fixed it or flashed whatever you call it. since I reinstalled it it was okay but starting to act up again now. Mild hesitation, choking at highway speeds. Weird and inconsistent...Any local recommendations on where I can take it to have checked out roadtalonsi?
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From: Texas
10 C six trizzle
what cel did it have on originally - any cel will put the car in limp mode and make it drive differently. So now that it is no longer on maybe the problem will actually present itself
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S550 on order
you know what i've noticed that, i just didn't want to say anything because it kinda sounds stupid, but my CEL's been coming on because of a broken intake hose (gets fixed tomorrow) and I notice that when it goes off (it does on its own sometimes) the car actually feels like it has more response Idk it's very odd...when the CEL is on it doesn't feel as torquey and not as responsive? no idea how to describe it but it for sure drives different with a CEL on, i'm guessing it does this so you don't mess anything else up
Last edited by avery.whss; Jan 19, 2014 at 03:42 PM.
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C63 AMG
I personally think he should wait until a piston makes a hole in the hood
read the codes
then put everything back to stock
add 1 mod at a time
Last edited by Ingenieur; Jan 19, 2014 at 05:05 PM.
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C63 AMG
you know what i've noticed that, i just didn't want to say anything because it kinda sounds stupid, but my CEL's been coming on because of a broken intake hose (gets fixed tomorrow) and I notice that when it goes off (it does on its own sometimes) the car actually feels like it has more response Idk it's very odd...when the CEL is on it doesn't feel as torquey and not as responsive? no idea how to describe it but it for sure drives different with a CEL on, i'm guessing it does this so you don't mess anything else up
when it's on you can't rev > 3000 or so, correct?
the CEL probably puts the car in a safe or limp mode
MBWorld Fanatic!
Joined: Oct 2007
Posts: 2,296
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From: Texas
10 C six trizzle
you know what i've noticed that, i just didn't want to say anything because it kinda sounds stupid, but my CEL's been coming on because of a broken intake hose (gets fixed tomorrow) and I notice that when it goes off (it does on its own sometimes) the car actually feels like it has more response Idk it's very odd...when the CEL is on it doesn't feel as torquey and not as responsive? no idea how to describe it but it for sure drives different with a CEL on, i'm guessing it does this so you don't mess anything else up
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Joined: Oct 2010
Posts: 364
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From: Carrollton, TX
2016 C63S AMG SEDAN
My CEL did come on and I did have it at MB Plano, actually for other scheduled service. But the my customer service rep didn't have the codes available to me when I picked it up. He just told me all the aftermarket additions to my vehicle have caused it to go haywire due to emissions and that it threw multiple codes.
I have stock air boxes. The CEL has gone away for now. Yes the problem is starting to come back running this way at highway speeds.
I have stock air boxes. The CEL has gone away for now. Yes the problem is starting to come back running this way at highway speeds.
Senior Member
Joined: Oct 2010
Posts: 364
Likes: 8
From: Carrollton, TX
2016 C63S AMG SEDAN
You can try Eurosport Automotive on Coit just north of GB tollway. They installed my rotors and pads just fine and cheaper than Autoscope. Big clean garage with lots of nice cars up on the racks. I have used them only this one time so not a lot of experience with them. If you choose to go there then let me/us know how it went so we can pool our knowledge of good local places. I am also going to call them on Monday to get a quote on installing my new KW V3's.
