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Old 08-14-2016, 12:57 PM
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Might Eco-Mode cause uneven cylinder wear?

I've been driving a new 2016 4x4 Summit with 5.7L V-8 for two months. I commute ~550 miles/week, mostly on freeways. Once I get on freeways, I push the button on the center-stack that activates Eco-Mode, and I have been very impressed with its performance, torque power and fuel savings. (I shut off Eco when traveling 2-lane roads. I use it only on highways.)

At any rate, I recently got to wondering if the Eco system always shuts down the same four cylinders; or, does it randomly vary the four cylinders which are shut down in order to mitigate the potential for uneven cylinder wear?

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Old 08-14-2016, 01:12 PM
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Re: Might Eco-Mode cause uneven cylinder wear?

Always the same four. Cylinder wear shouldn't be an issue over the life of the engine though. Those pistons are still moving, just not firing.
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Old 08-14-2016, 01:20 PM
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Re: Might Eco-Mode cause uneven cylinder wear?

It is always the same 4, but eco mode is not the same as MDS. Even with eco mode off, under the right conditions you will still be running on 4 cylinders.


Although there is no proof of this, back when the '14s had some miles on them, a lot of people started noticing MDS only after hitting around 5,000 miles. It may be that it doesn't trigger from day one in order for everything to break in evenly.


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Old 08-14-2016, 01:25 PM
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Re: Might Eco-Mode cause uneven cylinder wear?

Thank you!
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Old 08-31-2016, 08:35 PM
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Re: Might Eco-Mode cause uneven cylinder wear?

Quote:
Originally Posted by bill_de View Post
It is always the same 4, but eco mode is not the same as MDS. Even with eco mode off, under the right conditions you will still be running on 4 cylinders.


Although there is no proof of this, back when the '14s had some miles on them, a lot of people started noticing MDS only after hitting around 5,000 miles. It may be that it doesn't trigger from day one in order for everything to break in evenly.


--

Actually, MDS is much less "aggressive" in non-ECO mode in general. Since getting my 2016 though...it seems MDS in non-ECO mode only really comes on when coasting or braking, which seems to be even less aggressive than the 2014-2015 models.
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Old 09-05-2016, 10:00 PM
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Re: Might Eco-Mode cause uneven cylinder wear?

Quote:
Originally Posted by Peter_K View Post
Actually, MDS is much less "aggressive" in non-ECO mode in general. Since getting my 2016 though...it seems MDS in non-ECO mode only really comes on when coasting or braking, which seems to be even less aggressive than the 2014-2015 models.
My 16 MDS is not noticeable when it engages. I hear a very slight sound difference with the Corsa exhaust, but very slight. I only have 600 miles on it, so on this model, MDS is active from mile 1.
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Old 09-11-2016, 02:35 PM
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Might Eco-Mode cause uneven cylinder wear?

My Honda Accord v6 the vcm system which shutting down 3 cylinder caused problem after 90k mile it start with spark plug fouling then misfire & oil consumption , I hope it's not the same with hemi mds


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