M-Class (W166) Produced 2012-2015

Intake Manifold failure with a Trailer : can I still drive without repairing?

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Old Jul 14, 2021 | 09:39 PM
  #1  
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ML350 2015 (Bluetec)
Intake Manifold failure with a Trailer : can I still drive without repairing?

Hello,

Can't seem to find an answer if it's OK to drive 4,000km with a bad intake manifold before repairing it. We're towing a trailer. We're on a family road trip and there's not a real solution that's being offered to us right now. Engine does struggle from time to time, but sometimes it works like a flaw. Check engine is lit. Is there a short term solution (cleaning, etc) that doesn't involve letting the car in the garage for a few days?

Second car, second time this issue occurs. SAME issue. Can't believe there's not a recall for this plastic garbage crap.

Thanks for your help.

Edit : ML350 '15 (Bluetec)

Last edited by MayThe1ntake; Jul 14, 2021 at 10:32 PM.
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Old Jul 14, 2021 | 09:45 PM
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Old Jul 14, 2021 | 10:30 PM
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ML350 2015 (Bluetec)
ML350 Bluetec 2015 130K Km
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Old Jul 16, 2021 | 12:44 AM
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Old Jul 16, 2021 | 03:32 PM
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curious as I have same vehicle/approx same kms... What exactly is 'bad' on your intake manifold? Any pics?
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Old Jul 16, 2021 | 09:15 PM
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Ml350 bluetec
Originally Posted by Koenig1
curious as I have same vehicle/approx same kms... What exactly is 'bad' on your intake manifold? Any pics?
I am guessing and along with everyone else. But I believe he is talking about the Intake Manifold Swirl Flap and Swirl Flap motor. This is a common failure.

Intake with Swirl Flap: https://www.idparts.com/intake-manif...7-p-10178.html
Swirl Flap Motor: https://www.idparts.com/intake-swirl...0-p-10248.html
IDParts Video:

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Old Jul 17, 2021 | 11:57 AM
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Originally Posted by Koenig1
curious as I have same vehicle/approx same kms... What exactly is 'bad' on your intake manifold? Any pics?
So far I don't know, but I suspect it the plastic flaps that are stuck due to carbonation. Won't know till I open it up which is in 2 weeks.
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Old Jul 17, 2021 | 12:08 PM
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@MayThe1ntake I believe if you disconnect the flap motor to prevent it from actuating and manually prop the flaps open and ignore the CEL, you will be able to drive for the next couple of weeks.
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Old Jul 17, 2021 | 02:06 PM
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Originally Posted by Etienne Lau
@MayThe1ntake I believe if you disconnect the flap motor to prevent it from actuating and manually prop the flaps open and ignore the CEL, you will be able to drive for the next couple of weeks.
What are the risks of doing such thing? Also, does it involve removing any parts?
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Old Jul 18, 2021 | 05:05 AM
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Originally Posted by MayThe1ntake
What are the risks of doing such thing? Also, does it involve removing any parts?
Same thing happened to me. My tuner help me disconnected the swirls flap motor, and tuned it. The flap are spring loaded, so if you can find a way to manually open it, and disconnected it, it should work
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Old Jul 18, 2021 | 05:18 PM
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Could it cause adblue over consumption? Put 2.5 gal 1500km ago and now I've had a message pop up saying I have 10 starts remaining.
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Old Jul 20, 2021 | 02:18 PM
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Originally Posted by MayThe1ntake
Could it cause adblue over consumption? Put 2.5 gal 1500km ago and now I've had a message pop up saying I have 10 starts remaining.
That just your ad blue system acting up. Get a tuner and turn off all those ad blue bs and open up the swirl flap permanently, you will be good to go
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Old Jul 20, 2021 | 03:09 PM
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How does one find a Tuner? Do I just google Tuner MB ML 350 for that specifically? Or my garage can do that as well?
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Old Jul 22, 2021 | 12:03 PM
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Originally Posted by MayThe1ntake
How does one find a Tuner? Do I just google Tuner MB ML 350 for that specifically? Or my garage can do that as well?
Contact Sam@ECU program in calgary 403) 457-3650

I believe he can do remotely tune.
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Old Jul 27, 2021 | 03:07 PM
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Originally Posted by GLK Super Fan
Contact Sam@ECU program in calgary 403) 457-3650

I believe he can do remotely tune.
He can only send the OBD 2 controller so that I can tune it myself. Unfortunately, while being on the road, this is difficult. If it can help diagnose the problem, the car also stopped itself twice at a red light. The engine just shut off.
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Old Aug 19, 2021 | 06:30 PM
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It ended up being the mass air flow sensor code.
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Old Aug 19, 2021 | 07:47 PM
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Originally Posted by MayThe1ntake
It ended up being the mass air flow sensor code.
When was last time you clean it ?
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Old Sep 7, 2021 | 09:47 AM
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I don't recall, it's my dad's car. The problem with the mass air flow sensor code was that when we went for a fuel filter change, the guys at Calgary Downtown MB Service FORGOT TO PLUS IT BACK IN!?! How DUMB can they ****ing be...
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