Originally Posted by PimTac
That dealership ad is full of errors.
I agree.
That dealership ad is full of errors.
I agree.
Mazda Cylinder Deactivation
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Originally Posted by double vanos
I stand corrected! Heck if Mazda stays this course they're back in the mix. Needless to say I don't care all that much about CD.
Yeah, at 5600ft, get a turbo, or SC vehicle, whatever you do, IMO
I stand corrected! Heck if Mazda stays this course they're back in the mix. Needless to say I don't care all that much about CD.
Yeah, at 5600ft, get a turbo, or SC vehicle, whatever you do, IMO
Originally Posted by Ws6
Originally Posted by double vanos
I stand corrected! Heck if Mazda stays this course they're back in the mix. Needless to say I don't care all that much about CD.
Yeah, at 5600ft, get a turbo, or SC vehicle, whatever you do, IMO
Reality is, these days - regardless of 5600' altitude or not - if you 1) do buy a 4 cyl and 2) do not want to be complaining about a lack of power - it better have a turbo or a supercharger. In reality, the turbo is simpler... and if "not put away wet" or neglected re oil changes - should pretty easily go the distance. I used to be anti-turbo... but now accept it as reality if you want anything more than a plain basic small or intermediate car.
Originally Posted by double vanos
I stand corrected! Heck if Mazda stays this course they're back in the mix. Needless to say I don't care all that much about CD.
Yeah, at 5600ft, get a turbo, or SC vehicle, whatever you do, IMO
Reality is, these days - regardless of 5600' altitude or not - if you 1) do buy a 4 cyl and 2) do not want to be complaining about a lack of power - it better have a turbo or a supercharger. In reality, the turbo is simpler... and if "not put away wet" or neglected re oil changes - should pretty easily go the distance. I used to be anti-turbo... but now accept it as reality if you want anything more than a plain basic small or intermediate car.
Originally Posted by t1snwrbrdr12
I drove an AWD 3 for a couple of days while they still cant figure anything out with my 6.
It had a bad vibration on the highway. Only had 1000 miles on it. Since it wasn't mine I didn't care much, I figured it'd had been curbed and it was a wheel balance issue or something wasn't balanced in the drivetrain. Could have been engine I guess though since others brought it up.
I'd never buy a 4 cylinder with cylinder deactivation. Way too overly complicated for a MPG or 2.
My 6 gets 33-35 all the time. That 3 only got 28. I didn't drive it any different or on any different route.
Very likely CD. Typically starts vibrating at around 55 mph I'm told.
I drove an AWD 3 for a couple of days while they still cant figure anything out with my 6.
It had a bad vibration on the highway. Only had 1000 miles on it. Since it wasn't mine I didn't care much, I figured it'd had been curbed and it was a wheel balance issue or something wasn't balanced in the drivetrain. Could have been engine I guess though since others brought it up.
I'd never buy a 4 cylinder with cylinder deactivation. Way too overly complicated for a MPG or 2.
My 6 gets 33-35 all the time. That 3 only got 28. I didn't drive it any different or on any different route.
Very likely CD. Typically starts vibrating at around 55 mph I'm told.
Originally Posted by Cdn17Sport6MT
Originally Posted by t1snwrbrdr12
I drove an AWD 3 for a couple of days while they still cant figure anything out with my 6.
It had a bad vibration on the highway. Only had 1000 miles on it. Since it wasn't mine I didn't care much, I figured it'd had been curbed and it was a wheel balance issue or something wasn't balanced in the drivetrain. Could have been engine I guess though since others brought it up.
I'd never buy a 4 cylinder with cylinder deactivation. Way too overly complicated for a MPG or 2.
My 6 gets 33-35 all the time. That 3 only got 28. I didn't drive it any different or on any different route.
Very likely CD. Typically starts vibrating at around 55 mph I'm told.
Sounds like hearsay.
Originally Posted by t1snwrbrdr12
I drove an AWD 3 for a couple of days while they still cant figure anything out with my 6.
It had a bad vibration on the highway. Only had 1000 miles on it. Since it wasn't mine I didn't care much, I figured it'd had been curbed and it was a wheel balance issue or something wasn't balanced in the drivetrain. Could have been engine I guess though since others brought it up.
I'd never buy a 4 cylinder with cylinder deactivation. Way too overly complicated for a MPG or 2.
My 6 gets 33-35 all the time. That 3 only got 28. I didn't drive it any different or on any different route.
Very likely CD. Typically starts vibrating at around 55 mph I'm told.
Sounds like hearsay.
Originally Posted by Cdn17Sport6MT
Originally Posted by t1snwrbrdr12
I drove an AWD 3 for a couple of days while they still cant figure anything out with my 6.
It had a bad vibration on the highway. Only had 1000 miles on it. Since it wasn't mine I didn't care much, I figured it'd had been curbed and it was a wheel balance issue or something wasn't balanced in the drivetrain. Could have been engine I guess though since others brought it up.
I'd never buy a 4 cylinder with cylinder deactivation. Way too overly complicated for a MPG or 2.
My 6 gets 33-35 all the time. That 3 only got 28. I didn't drive it any different or on any different route.
Very likely CD. Typically starts vibrating at around 55 mph I'm told.
Sounds like you've not experienced it yourself.
I very highly doubt CD caused a "bad vibration". I took a trip (about 80 miles round trip) in my 3 today after reading this thread. I kept an eye on the CD monitor and tried to pay attention to any vibrations. It was imperceptible. Absolutely nothing.
I can't imagine that some cars have a bad vibration (caused by CD) while others, like mine, are completely vibration free.
Originally Posted by t1snwrbrdr12
I drove an AWD 3 for a couple of days while they still cant figure anything out with my 6.
It had a bad vibration on the highway. Only had 1000 miles on it. Since it wasn't mine I didn't care much, I figured it'd had been curbed and it was a wheel balance issue or something wasn't balanced in the drivetrain. Could have been engine I guess though since others brought it up.
I'd never buy a 4 cylinder with cylinder deactivation. Way too overly complicated for a MPG or 2.
My 6 gets 33-35 all the time. That 3 only got 28. I didn't drive it any different or on any different route.
Very likely CD. Typically starts vibrating at around 55 mph I'm told.
Sounds like you've not experienced it yourself.
I very highly doubt CD caused a "bad vibration". I took a trip (about 80 miles round trip) in my 3 today after reading this thread. I kept an eye on the CD monitor and tried to pay attention to any vibrations. It was imperceptible. Absolutely nothing.
I can't imagine that some cars have a bad vibration (caused by CD) while others, like mine, are completely vibration free.
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Originally Posted by cpayne5
Originally Posted by Cdn17Sport6MT
Originally Posted by t1snwrbrdr12
I drove an AWD 3 for a couple of days while they still cant figure anything out with my 6.
It had a bad vibration on the highway. Only had 1000 miles on it. Since it wasn't mine I didn't care much, I figured it'd had been curbed and it was a wheel balance issue or something wasn't balanced in the drivetrain. Could have been engine I guess though since others brought it up.
I'd never buy a 4 cylinder with cylinder deactivation. Way too overly complicated for a MPG or 2.
My 6 gets 33-35 all the time. That 3 only got 28. I didn't drive it any different or on any different route.
Very likely CD. Typically starts vibrating at around 55 mph I'm told.
Sounds like you've not experienced it yourself.
I very highly doubt CD caused a "bad vibration". I took a trip (about 80 miles round trip) in my 3 today after reading this thread. I kept an eye on the CD monitor and tried to pay attention to any vibrations. It was imperceptible. Absolutely nothing.
I can't imagine that some cars have a bad vibration (caused by CD) while others, like mine, are completely vibration free.
Maybe you did not read an earlier post I made, likening it to "chevy-shake". Not all cars with CD experience this. If you'd care to view the following site, there are 6 pp. of posts to do with this matter. Some folks most-certainly do experience significant vibrations from their CD system: https://www.mazda3revolution.com/threads/cylinder-deactivation-issues.237085/ .
You know, it's the same old thing: folks who have not experienced a certain, shall we say, "fault" in their vehicles - said "fault" being evident in a fairly small % of the vehicle population - seem to discount the occurance as being untrue, due to something else, etc... I again point to Chevy Shake. It sure as h*ll does happen to a small % of the vehicles. GM can't seem to (or don't want to) fix it.
I am not Mazda-bashing; it's just that at times Mazda is at the bleeding edge with some of their technologies. CD on a 4 cylinder vehicle, to me, sounds like a recipe for (long-term) disaster.
Originally Posted by Cdn17Sport6MT
Originally Posted by t1snwrbrdr12
I drove an AWD 3 for a couple of days while they still cant figure anything out with my 6.
It had a bad vibration on the highway. Only had 1000 miles on it. Since it wasn't mine I didn't care much, I figured it'd had been curbed and it was a wheel balance issue or something wasn't balanced in the drivetrain. Could have been engine I guess though since others brought it up.
I'd never buy a 4 cylinder with cylinder deactivation. Way too overly complicated for a MPG or 2.
My 6 gets 33-35 all the time. That 3 only got 28. I didn't drive it any different or on any different route.
Very likely CD. Typically starts vibrating at around 55 mph I'm told.
Sounds like you've not experienced it yourself.
I very highly doubt CD caused a "bad vibration". I took a trip (about 80 miles round trip) in my 3 today after reading this thread. I kept an eye on the CD monitor and tried to pay attention to any vibrations. It was imperceptible. Absolutely nothing.
I can't imagine that some cars have a bad vibration (caused by CD) while others, like mine, are completely vibration free.
Maybe you did not read an earlier post I made, likening it to "chevy-shake". Not all cars with CD experience this. If you'd care to view the following site, there are 6 pp. of posts to do with this matter. Some folks most-certainly do experience significant vibrations from their CD system: https://www.mazda3revolution.com/threads/cylinder-deactivation-issues.237085/ .
You know, it's the same old thing: folks who have not experienced a certain, shall we say, "fault" in their vehicles - said "fault" being evident in a fairly small % of the vehicle population - seem to discount the occurance as being untrue, due to something else, etc... I again point to Chevy Shake. It sure as h*ll does happen to a small % of the vehicles. GM can't seem to (or don't want to) fix it.
I am not Mazda-bashing; it's just that at times Mazda is at the bleeding edge with some of their technologies. CD on a 4 cylinder vehicle, to me, sounds like a recipe for (long-term) disaster.
Last edited:
Originally Posted by Cdn17Sport6MT
Originally Posted by cpayne5
Originally Posted by Cdn17Sport6MT
Originally Posted by t1snwrbrdr12
I drove an AWD 3 for a couple of days while they still cant figure anything out with my 6.
It had a bad vibration on the highway. Only had 1000 miles on it. Since it wasn't mine I didn't care much, I figured it'd had been curbed and it was a wheel balance issue or something wasn't balanced in the drivetrain. Could have been engine I guess though since others brought it up.
I'd never buy a 4 cylinder with cylinder deactivation. Way too overly complicated for a MPG or 2.
My 6 gets 33-35 all the time. That 3 only got 28. I didn't drive it any different or on any different route.
Very likely CD. Typically starts vibrating at around 55 mph I'm told.
Sounds like you've not experienced it yourself.
I very highly doubt CD caused a "bad vibration". I took a trip (about 80 miles round trip) in my 3 today after reading this thread. I kept an eye on the CD monitor and tried to pay attention to any vibrations. It was imperceptible. Absolutely nothing.
I can't imagine that some cars have a bad vibration (caused by CD) while others, like mine, are completely vibration free.
Maybe you did not read an earlier post I made, likening it to "chevy-shake". Not all cars with CD experience this. If you'd care to view the following site, there are 6 pp. of posts to do with this matter. Some folks most-certainly do experience significant vibrations from their CD system: https://www.mazda3revolution.com/threads/cylinder-deactivation-issues.237085/ .
You know, it's the same old thing: folks who have not experienced a certain, shall we say, "fault" in their vehicles - said "fault" being evident in a fairly small % of the vehicle population - seem to discount the occurance as being untrue, due to something else, etc... I again point to Chevy Shake. It sure as h*ll does happen to a small % of the vehicles. GM can't seem to (or don't want to) fix it.
I am not Mazda-bashing; it's just that at times Mazda is at the bleeding edge with some of their technologies. CD on a 4 cylinder vehicle, to me, sounds like a recipe for (long-term) disaster.
I honestly am not a fan of CD, which is part of why I like that the turbo doesn't have it. I had a Jeep with DoD/CD, and it was just fine though, in that regard. However, the Mazda system is stupid. My Jeep would run CD up to about 77mph or so, and under a reasonable range of conditions. The Mazda? I think it has some ridiculous operating window like 35-55mph or something. I'm with you on this one...just...why? I mean, I get the "why", it's so that they can have a better fleet average, but as the singular owner, I don't care.
Originally Posted by cpayne5
Originally Posted by Cdn17Sport6MT
Originally Posted by t1snwrbrdr12
I drove an AWD 3 for a couple of days while they still cant figure anything out with my 6.
It had a bad vibration on the highway. Only had 1000 miles on it. Since it wasn't mine I didn't care much, I figured it'd had been curbed and it was a wheel balance issue or something wasn't balanced in the drivetrain. Could have been engine I guess though since others brought it up.
I'd never buy a 4 cylinder with cylinder deactivation. Way too overly complicated for a MPG or 2.
My 6 gets 33-35 all the time. That 3 only got 28. I didn't drive it any different or on any different route.
Very likely CD. Typically starts vibrating at around 55 mph I'm told.
Sounds like you've not experienced it yourself.
I very highly doubt CD caused a "bad vibration". I took a trip (about 80 miles round trip) in my 3 today after reading this thread. I kept an eye on the CD monitor and tried to pay attention to any vibrations. It was imperceptible. Absolutely nothing.
I can't imagine that some cars have a bad vibration (caused by CD) while others, like mine, are completely vibration free.
Maybe you did not read an earlier post I made, likening it to "chevy-shake". Not all cars with CD experience this. If you'd care to view the following site, there are 6 pp. of posts to do with this matter. Some folks most-certainly do experience significant vibrations from their CD system: https://www.mazda3revolution.com/threads/cylinder-deactivation-issues.237085/ .
You know, it's the same old thing: folks who have not experienced a certain, shall we say, "fault" in their vehicles - said "fault" being evident in a fairly small % of the vehicle population - seem to discount the occurance as being untrue, due to something else, etc... I again point to Chevy Shake. It sure as h*ll does happen to a small % of the vehicles. GM can't seem to (or don't want to) fix it.
I am not Mazda-bashing; it's just that at times Mazda is at the bleeding edge with some of their technologies. CD on a 4 cylinder vehicle, to me, sounds like a recipe for (long-term) disaster.
I honestly am not a fan of CD, which is part of why I like that the turbo doesn't have it. I had a Jeep with DoD/CD, and it was just fine though, in that regard. However, the Mazda system is stupid. My Jeep would run CD up to about 77mph or so, and under a reasonable range of conditions. The Mazda? I think it has some ridiculous operating window like 35-55mph or something. I'm with you on this one...just...why? I mean, I get the "why", it's so that they can have a better fleet average, but as the singular owner, I don't care.
My parents 3rd gen (2017 or 2018) Honda Pilot EX-L has cylinder deactivation. While it was not noticeable initially - after a combined 250-300 miles in it on state roads at 55-65MPH I started to notice its activating and deactivating despite whatever engine mount magic Honda claims, it was an ever so slight driveline shudder. 90+% of the Pilot/Odyssey consumers will never notice nor care even if they did notice the slight shudder - I only notice because I know what is happening under the hood.
CD on an already pretty darn efficient SkyActiv 4 cylinder seems like doing extra just to do extra.
CD on an already pretty darn efficient SkyActiv 4 cylinder seems like doing extra just to do extra.
https://www.rangetechnology.com/products/afm_disabler/
This is aimed at GM not Mazda but the idea is the same
This is aimed at GM not Mazda but the idea is the same
Originally Posted by Cdn17Sport6MT
Maybe you did not read an earlier post I made, likening it to "chevy-shake". Not all cars with CD experience this. If you'd care to view the following site, there are 6 pp. of posts to do with this matter. Some folks most-certainly do experience significant vibrations from their CD system: https://www.mazda3revolution.com/threads/cylinder-deactivation-issues.237085/ .
You know, it's the same old thing: folks who have not experienced a certain, shall we say, "fault" in their vehicles - said "fault" being evident in a fairly small % of the vehicle population - seem to discount the occurance as being untrue, due to something else, etc... I again point to Chevy Shake. It sure as h*ll does happen to a small % of the vehicles. GM can't seem to (or don't want to) fix it.
I am not Mazda-bashing; it's just that at times Mazda is at the bleeding edge with some of their technologies. CD on a 4 cylinder vehicle, to me, sounds like a recipe for (long-term) disaster.
Take a breath.
I also have not said that it's not happening to others, but simply that my experience makes me skeptical (not a derogatory term!). Skepticism is a reasonable position in this instance.
Maybe you did not read an earlier post I made, likening it to "chevy-shake". Not all cars with CD experience this. If you'd care to view the following site, there are 6 pp. of posts to do with this matter. Some folks most-certainly do experience significant vibrations from their CD system: https://www.mazda3revolution.com/threads/cylinder-deactivation-issues.237085/ .
You know, it's the same old thing: folks who have not experienced a certain, shall we say, "fault" in their vehicles - said "fault" being evident in a fairly small % of the vehicle population - seem to discount the occurance as being untrue, due to something else, etc... I again point to Chevy Shake. It sure as h*ll does happen to a small % of the vehicles. GM can't seem to (or don't want to) fix it.
I am not Mazda-bashing; it's just that at times Mazda is at the bleeding edge with some of their technologies. CD on a 4 cylinder vehicle, to me, sounds like a recipe for (long-term) disaster.
Take a breath.
I also have not said that it's not happening to others, but simply that my experience makes me skeptical (not a derogatory term!). Skepticism is a reasonable position in this instance.
Originally Posted by painfx
If it has 6 cylinders, I can believe it. By turn off 3 cylinders on 1 bank. Since it is a 4 cylinders, turn off even 1 cylinder, you will definitely feel the car bog down bad.
No because it only happens at light steady cruise. Give it the gas and all four are firing.
If it has 6 cylinders, I can believe it. By turn off 3 cylinders on 1 bank. Since it is a 4 cylinders, turn off even 1 cylinder, you will definitely feel the car bog down bad.
No because it only happens at light steady cruise. Give it the gas and all four are firing.
I believe special engine & transaxle mounts are required to accomodate CD. For the automatic transmission models a special "pendulum-type" flex-plate is used; for the manual transaxle cars I'm not sure how- or if the fliywheel is modified. This 'kinda tells me that the transitions - 4 cyl to 2 and vice-versa - are "rough" and likely the actual running in 2 cyl mode is rough.
This vibration + the thermal craziness of having a non-running cyl next to a running cyl gives me the heebie-jeebies. Sorry, not for this cowboy...
This vibration + the thermal craziness of having a non-running cyl next to a running cyl gives me the heebie-jeebies. Sorry, not for this cowboy...
I have a 2019 MAZDA3 GT 6MT with CD and it is definitely noticeable. Not atrocious, and if the 2.5L wasn't so smooth and refined, I doubt anyone would even notice. It feels like a slightly out of balance half shaft, or a gently rippling road.
I have only noticed it engaging and disengaging at 60-90kph on level or nearly level roads and no headwind. Engine also has to be up to full operating temperature, I've noted. It engages and disengages very smoothly and the engine response is the same as if it weren't even present. No lag or delay in power. I could not discern when CD was operating on the AT dealer loaner I drove for 4-5 days, so either there definitely are engines where CD is noticeable and ones where it isn't, or the auto transmission and associated mounts filter it out better.
With the manual transmission it is clear that as soon as you lift throttle, it disengages, possibly for increased engine braking or to avoid low rpm harmonics issues?
I have a Corksport axleback exhaust on order and am curious if CD will affect engine note. Mazda OEM exhaust is so muted, you only ever hear the exhaust on heavy throttle.
I have only noticed it engaging and disengaging at 60-90kph on level or nearly level roads and no headwind. Engine also has to be up to full operating temperature, I've noted. It engages and disengages very smoothly and the engine response is the same as if it weren't even present. No lag or delay in power. I could not discern when CD was operating on the AT dealer loaner I drove for 4-5 days, so either there definitely are engines where CD is noticeable and ones where it isn't, or the auto transmission and associated mounts filter it out better.
With the manual transmission it is clear that as soon as you lift throttle, it disengages, possibly for increased engine braking or to avoid low rpm harmonics issues?
I have a Corksport axleback exhaust on order and am curious if CD will affect engine note. Mazda OEM exhaust is so muted, you only ever hear the exhaust on heavy throttle.
wemay
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Shiro_se - I will be sending you a PM in a couple of minutes, re your experiences with this powertrain. A PM because I don't want to derail this thread. I have the same powertrain in my '17 Mazda6, without the CD.
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