Intake manifold broken?
MBWorld Fanatic!
Joined: Jun 2007
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From: Los Angeles, CA
2015 C400 Tenorite Gray
BTW I just read about law firm investigating about a class action.
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MBWorld Fanatic!
Joined: Jun 2007
Posts: 1,022
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From: Los Angeles, CA
2015 C400 Tenorite Gray
Thanks RODNEY. I've driven the car over 800 miles with a combo of city and highway. I've tried a few drive cycles. I'm starting to think it's something else...
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But did you follow those steps? There was a guy on the W203 forum that had the same issue - one of the readiness indicators would not set. He thought he had done it all, too, but one he followed this cycle, it finally set. His issue was that it was very cold where he was, so he had issues getting the temperature high enough, which may have been caused by a bd coolant thermostat.
MBWorld Fanatic!
Joined: Jun 2007
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From: Los Angeles, CA
2015 C400 Tenorite Gray
But did you follow those steps? There was a guy on the W203 forum that had the same issue - one of the readiness indicators would not set. He thought he had done it all, too, but one he followed this cycle, it finally set. His issue was that it was very cold where he was, so he had issues getting the temperature high enough, which may have been caused by a bd coolant thermostat.
2. I'm going to take it in to have the dealer scan for any codes. I want to rule this out. I've waited so much gas.
3. My engine temp is just north of 85 but suddenly I don't have any heat. Just blows cold air. When it rains it pours.
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From: Los Angeles, CA
2015 C400 Tenorite Gray
UPDATE:
The shop foreman at the dealer says he believes the issue relates to the software on the ME control Unit. OE tuning did a tune and emphatically state that they don't turn off O2 sensors. I did not tell the shop foreman because I don't want to open up another can of worms.
The shop foreman found a software upgrade an uploaded it.
Something must have gone wrong with OE tuning's tune. So far they are denying it. OE tuning does offer a free re-flash.
The shop foreman at the dealer says he believes the issue relates to the software on the ME control Unit. OE tuning did a tune and emphatically state that they don't turn off O2 sensors. I did not tell the shop foreman because I don't want to open up another can of worms.
The shop foreman found a software upgrade an uploaded it.
Something must have gone wrong with OE tuning's tune. So far they are denying it. OE tuning does offer a free re-flash.
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Junior Member
Joined: Oct 2010
Posts: 17
Likes: 1
From: Snowbird - TN/KW
2006 CLK 350
Where should this hose go?
I am in the midst of replacing the intake manifold.
Hopefully in the attached picture you can easily see the actuator arm broken from the plastic bell crank. So, at least, I am not doing this for nothing.
In the center of the image you should see a short hose. One end is attached just below the center vacuum diaphragm. When I lifted the front of the intake manifold up the other end did not seem to be connected to anything. It is a short hose and could not reach far. It does not appear to be broken, although I suppose that is possible. The end is a very clean and 90 degree face to the axis of the hose. Looks almost as if it was never connected, but I know that is not possible.
I am just posting hoping someone might know what is going on with that hose. I will continue and remove the manifold and maybe when that is done something will appear that I cannot now see.
Thanks,
Russ 2006 CLK350 cabriolet
Hopefully in the attached picture you can easily see the actuator arm broken from the plastic bell crank. So, at least, I am not doing this for nothing.
In the center of the image you should see a short hose. One end is attached just below the center vacuum diaphragm. When I lifted the front of the intake manifold up the other end did not seem to be connected to anything. It is a short hose and could not reach far. It does not appear to be broken, although I suppose that is possible. The end is a very clean and 90 degree face to the axis of the hose. Looks almost as if it was never connected, but I know that is not possible.
I am just posting hoping someone might know what is going on with that hose. I will continue and remove the manifold and maybe when that is done something will appear that I cannot now see.
Thanks,
Russ 2006 CLK350 cabriolet
Junior Member
Joined: Oct 2010
Posts: 17
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From: Snowbird - TN/KW
2006 CLK 350
Never mind! After the manifold was out I could see it had slipped off the OD of a plastic cream colored vacuum tube. It is the only thing close enough and has to be where it goes. It would be nice if the hose was a little longer. I will probably go back with a new hose and lengthen it a bit.
Russ
Russ
Newbie
Joined: Jul 2016
Posts: 7
Likes: 0
2006 E350 Base
Did my Intake this weekend
I finally tackled this one. Took about 4 hours end to end. It wound up begin no big deal, Spent over and hour cleaning the engine intake ports and the manifold itself, but went back together no problem. CEL turned right off! Drives MUCH better.
It did not fix the problem I was after, a subtle engine surge at about 1200 to 1800 RPMs when the engine is under load. Not going down a hill, but up. Can barley feel it in the seat a slight surge and the tach moves about 50 RPMs several times a second. And when it is doing this, and you try to accelerate quickly there is a stumble and then it gets going.
Ill start a new thread...
It did not fix the problem I was after, a subtle engine surge at about 1200 to 1800 RPMs when the engine is under load. Not going down a hill, but up. Can barley feel it in the seat a slight surge and the tach moves about 50 RPMs several times a second. And when it is doing this, and you try to accelerate quickly there is a stumble and then it gets going.
Ill start a new thread...
Newbie
Joined: Nov 2013
Posts: 7
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2007 C230 Sport
I'm having the same issues on my C-Class. The dealer wants $2K to replace. I can buy the part new for 1K but I'm wondering how big a job this is? Does anyone have a step by step for this repair. I'm not afraid to do it as long as it's not over my head. I've rebuilt engines before and probably have enough tools to make a full time technician jealous. I'm just looking for some reliable input and suggestions here. Thanks in advance!
MBWorld Fanatic!
Joined: Jun 2007
Posts: 1,022
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From: Los Angeles, CA
2015 C400 Tenorite Gray
I'm having the same issues on my C-Class. The dealer wants $2K to replace. I can buy the part new for 1K but I'm wondering how big a job this is? Does anyone have a step by step for this repair. I'm not afraid to do it as long as it's not over my head. I've rebuilt engines before and probably have enough tools to make a full time technician jealous. I'm just looking for some reliable input and suggestions here. Thanks in advance!
Here's a video:
One thing I would suggest is to replace with the upgraded metal kit instead of the plastic. That's the reason why they fail. If you just put the new one without upgrading to metal, it will likely it will fail.
Benz claims it addressed this issue but I think they are full off crap.
Senior Member
Joined: Jul 2013
Posts: 310
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From: Virginia
S211 E350 wagon, w211 e550 4matic, w210 2001 e320, 2023 glb250, 2013 Audi q7
Goto Advance auto and asked them to look up the part through world pac(OEM) use online discount and speed perks about 5-$600
I did mine last summer and used every discount I could find, had them order it so I was instock in store so I could order online with store pick up.
GOOD LUCK!!
I did mine last summer and used every discount I could find, had them order it so I was instock in store so I could order online with store pick up.
GOOD LUCK!!
I'm having the same issues on my C-Class. The dealer wants $2K to replace. I can buy the part new for 1K but I'm wondering how big a job this is? Does anyone have a step by step for this repair. I'm not afraid to do it as long as it's not over my head. I've rebuilt engines before and probably have enough tools to make a full time technician jealous. I'm just looking for some reliable input and suggestions here. Thanks in advance!
Newbie
Joined: Dec 2016
Posts: 9
Likes: 0
From: Boston, MA
06 CLK 350
Would it be possible for the manifold to be broken and no check engine light? My dealer told me about 2 years ago that the flap is broken but its ok to drive. I don't have a check engine light and the car passes emission test every year. Get a good fuel mileage also. Curious!!
MBWorld Fanatic!
Joined: Jun 2007
Posts: 1,022
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From: Los Angeles, CA
2015 C400 Tenorite Gray
If you've rebuilt engines, it's should not pose a problem. You're basically disconnecting and reconnecting. It definitely take a few hours.
Here's a video:
https://www.youtube.com/watch?v=6jeu49IvD00
One thing I would suggest is to replace with the upgraded metal kit instead of the plastic. That's the reason why they fail. If you just put the new one without upgrading to metal, it will likely it will fail.
Benz claims it addressed this issue but I think they are full off crap.
Here's a video:
https://www.youtube.com/watch?v=6jeu49IvD00
One thing I would suggest is to replace with the upgraded metal kit instead of the plastic. That's the reason why they fail. If you just put the new one without upgrading to metal, it will likely it will fail.
Benz claims it addressed this issue but I think they are full off crap.
Would it be possible for the manifold to be broken and no check engine light? My dealer told me about 2 years ago that the flap is broken but its ok to drive. I don't have a check engine light and the car passes emission test every year. Get a good fuel mileage also. Curious!!
If it were broken, the engine readiness would be effected. Get an OBII and scan it or go to an emission place for a free scan. Some states allow only one failure and other states two to pass.
if the flap is broken, your dealer is insane.
- you would risk further damage. Something does not add up.
Newbie
Joined: Dec 2016
Posts: 9
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From: Boston, MA
06 CLK 350
I have OBDII scanner, will check. I didn't know that I can do emission test with it. I thought it only reads the codes from on board computer.
There is definitely no loss of power. No performance issues. its a 06 CLK 350.
Thanks.
There is definitely no loss of power. No performance issues. its a 06 CLK 350.
Thanks.
MBWorld Fanatic!
Joined: Jun 2007
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From: Los Angeles, CA
2015 C400 Tenorite Gray
It should be able to check engine readiness
Newbie
Joined: Dec 2016
Posts: 9
Likes: 0
From: Boston, MA
06 CLK 350
Dealer mentioned it to me when i visited the shop due to CIL ( major evap leak). They didn't find anything first time but second time he said intake manifold needs replacement. Funny thing is after they cleared the CIL second time, it never came back due to that reason. Its 2 years since and car passed 2 emission tests and runs great.
MBWorld Fanatic!
Joined: Jun 2007
Posts: 1,022
Likes: 44
From: Los Angeles, CA
2015 C400 Tenorite Gray
Dealer mentioned it to me when i visited the shop due to CIL ( major evap leak). They didn't find anything first time but second time he said intake manifold needs replacement. Funny thing is after they cleared the CIL second time, it never came back due to that reason. Its 2 years since and car passed 2 emission tests and runs great.
Newbie
Joined: Dec 2016
Posts: 9
Likes: 0
From: Boston, MA
06 CLK 350
Thanks a lot for confirming my suspicion. I used OBII to read codes multiple times and there is no code stored.
MBWorld Fanatic!
Joined: Jun 2007
Posts: 1,022
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From: Los Angeles, CA
2015 C400 Tenorite Gray
That won't read a manifold code. Those general readers only can do so much. But if the manifold was broken something would be blinking.
If it's all good, it looks like the attached photo.
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Actually, if the MIL is illuminated, a generic OBDII scanner should be able to pull code(s) that will tell you something useful. Manifold flap issues do have generic "P" codes that such a tool would report. The caveat is that sometime one generic OBDII "P" code can represent multiple MBZ-specific DTCs, but at least it's a start.
MBWorld Fanatic!
Joined: Jun 2007
Posts: 1,022
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From: Los Angeles, CA
2015 C400 Tenorite Gray
Actually, if the MIL is illuminated, a generic OBDII scanner should be able to pull code(s) that will tell you something useful. Manifold flap issues do have generic "P" codes that such a tool would report. The caveat is that sometime one generic OBDII "P" code can represent multiple MBZ-specific DTCs, but at least it's a start.
