Looking through the forums, I know that this is a bit of an old topic, but bear with me.
I have a 2011 Kizashi S FWD. I notice that at around 25mph, it struggles to get any more speed, and only picks up again at around 40mph. There is also a low vibration/rumble in the car. Switching to manual mode, I notice that I'm actually in 5th gear at around 25mph. (I know, 5th VIRTUAL gear, CVT has no actual gears)
Anyhoo, reading around I came across this post.
http://www.suzuki-forums.com/suzuki-kiz ... s-lag.html
the last entry on the third page has a very good resolution with the guy getting a software update and seemingly solving the problem. (if it is a problem)
Frankly, I can live with the slow acceleration at the speed, I know it's probably for fuel economy. But the low vibration scares me in what it might do to the car over time.
Is there any history of 2011's needing a CVT computer update? I know some of the 2010's needed one, and the guy from the post has a 2012. Has anybody here taken their Kizashi in and gotten this update, and has it helped?
CVT in very high gear at about 35kph (20mph)
If you push the gas pedal more, do the rpm raise and are you able to speed up quickly? If yes then I'd say this is only your feeling and you'll get used to it.
My CVT under low acceleration goes like this:
from 0 to ~35km/h, the rpms stay at ~2000, then as the speed climbs from 35-40, I see the rpms dropping continuously to ~1200, and start feeling that the engine is loaded and there is a bit of vibration and I hear a deep rumble from the engine. The speed goes up in the same pace nevertheless. When I reach the desired speed, 50-60km/h for city driving, the engine smooths out and goes quiet, the rpms stay at ~1200.
Try to keep an eye on the speedometer and see if you are gaining speed at the same pace all the time. If you are, then what you feel is the CVT loading the engine most probably to save gas.
Btw. you can also feel something that feels like a shift on a convention automatic transmission, that is the torque converter locking up (or unlocking in case of deceleration). It happens at ~35-40km/h during acceleration most of the time and at ~10-15km/h during braking.
My CVT under low acceleration goes like this:
from 0 to ~35km/h, the rpms stay at ~2000, then as the speed climbs from 35-40, I see the rpms dropping continuously to ~1200, and start feeling that the engine is loaded and there is a bit of vibration and I hear a deep rumble from the engine. The speed goes up in the same pace nevertheless. When I reach the desired speed, 50-60km/h for city driving, the engine smooths out and goes quiet, the rpms stay at ~1200.
Try to keep an eye on the speedometer and see if you are gaining speed at the same pace all the time. If you are, then what you feel is the CVT loading the engine most probably to save gas.
Btw. you can also feel something that feels like a shift on a convention automatic transmission, that is the torque converter locking up (or unlocking in case of deceleration). It happens at ~35-40km/h during acceleration most of the time and at ~10-15km/h during braking.
-
matt_gold99
- Posts: 37
- Joined: Mon Apr 08, 2013 2:44 am
Interesting...mine does the same thing...EXACTLY. it's a bit shocking how precisely that describes the behavior of mine. At around 35kph, my rpm drops from almost exactly 2000 to 1200, and drops pretty obviously and quickly. I get a low rumble till it smooths out around 60kph or so.
If this is totally normal, then I'm fine with it. I can give it more throttle and my rpm does in increase, so it's all good.
One thing I notice, and this might be my imagination...if I am cruising around 35kph or so, and I am lightly touching the accelerator, it seems like sometimes the torque converter can totally decide to lock or not. It's not an obvious jerking, very subtle and it needs to be the perfect speed, but I think it's there.
I wonder if a tranny fluid change might help.
If this is totally normal, then I'm fine with it. I can give it more throttle and my rpm does in increase, so it's all good.
One thing I notice, and this might be my imagination...if I am cruising around 35kph or so, and I am lightly touching the accelerator, it seems like sometimes the torque converter can totally decide to lock or not. It's not an obvious jerking, very subtle and it needs to be the perfect speed, but I think it's there.
I wonder if a tranny fluid change might help.
No shock here, it's computer after all ... same program, same behaviourmatt_gold99 wrote:Interesting...mine does the same thing...EXACTLY. it's a bit shocking how precisely that describes the behavior of mine.
I'd say this is tied to the mentioned computer (ECU) not being one of the fastest. The operation is not as smooth as it could be, since the adjustments to air/fuel/whatever can be adjusted are not so frequent, I noticed this also regarding the cruise control (see the other thread). I personally don't think that this has to do anything with the torque converter or the transmission itself at all.matt_gold99 wrote: One thing I notice, and this might be my imagination...if I am cruising around 35kph or so, and I am lightly touching the accelerator, it seems like sometimes the torque converter can totally decide to lock or not. It's not an obvious jerking, very subtle and it needs to be the perfect speed, but I think it's there.
I wonder if a tranny fluid change might help.
-
matt_gold99
- Posts: 37
- Joined: Mon Apr 08, 2013 2:44 am
I see. Ya, I am not totally used to cars being controlled so completely by computers.
Just wanted to clarify, little typo...I typed "the torque converter can totally decide to lock or not."
I meant to type the torque converter CAN'T totally decide to lock or not.
Just wanted to make sure we're talking about the same thing, but judging by the content of your post, I think we are.
Just wanted to clarify, little typo...I typed "the torque converter can totally decide to lock or not."
I meant to type the torque converter CAN'T totally decide to lock or not.
Just wanted to make sure we're talking about the same thing, but judging by the content of your post, I think we are.