Cruise control
It might just be a software programming issue with the cruise control side of things in the engine/ CVT ECU/s ?
I've never noticed anything like that with my manual trans when using the cruise control. I use it a lot around the city to avoid speeding fines. About the only annoying thing I've found is with the manual trans you need to be in 4th gear or higher or else it won't work ( so it can't be used in long sections of roadworks where the limit might be 25km/h).
I've never noticed anything like that with my manual trans when using the cruise control. I use it a lot around the city to avoid speeding fines. About the only annoying thing I've found is with the manual trans you need to be in 4th gear or higher or else it won't work ( so it can't be used in long sections of roadworks where the limit might be 25km/h).
David
The cruise control on this car is the worst I ever had.
When I set the speed on CC, I see that the car slows down by 1-2km/h, then the CC kicks in and accelerates harshly to catch up, raising the rpms up a few hundred revolutions, then it settles, speed matches the preset one and the rpms go back to the cruising value. All this takes a few seconds and cannot be called smooth. I try to workaround by setting the speed on CC and immediately raising it by 1 kmh using the CC controls, this way I can at least avoid the speed drop. Still not smooth, but smoother.
I noticed the coasting issue myself, I believe it's normal and what you feel is the torque converter unlocking. Unfortunately, the ECM handles this harshly and for a moment, the engine feels like stalling until the ECM compensates. Example: I coast with ~800rpm, then the unlock happens, the rpm drops to ~650, then raises to ~750. During this, I can feel the jerk you describe.
For me, moving from D to N is also not smooth and I can feel a similar "stall" with oscilating rpms. (there is of course no real stall)
I guess that people who say that theirs car does not do it just aren't paying that attention or don't have such picky senses. My girlfriend doesn't feel none of the issues I do. Sometimes I wish I didn't as well
murcod, it's not really 4th gear, the real limit is 40km/h for you to be able to engage CC (confirmed by suzuki dealer). I don't like as well.
as for hilly driving, the issue is this, the "6th" gear on CVT - the lowest one is really really low, so if you go at highway speeds, the engine is running with no space for additional load, when you hit an uphill, after a few secs the CC will realize this and raise the rpms to compensate. Again, the CC module is kinda slow thinker, so by the time it realizes it needs to add some rpms, its too late to add "some" and actually needs to add "a lot", so the rpms do not raise smoothly as they should, but rather abruptly.
if you put the CVT in manual 6th gear, it'll not climb but the most gentle of hills and you'll just gradually loose speed .
When I set the speed on CC, I see that the car slows down by 1-2km/h, then the CC kicks in and accelerates harshly to catch up, raising the rpms up a few hundred revolutions, then it settles, speed matches the preset one and the rpms go back to the cruising value. All this takes a few seconds and cannot be called smooth. I try to workaround by setting the speed on CC and immediately raising it by 1 kmh using the CC controls, this way I can at least avoid the speed drop. Still not smooth, but smoother.
I noticed the coasting issue myself, I believe it's normal and what you feel is the torque converter unlocking. Unfortunately, the ECM handles this harshly and for a moment, the engine feels like stalling until the ECM compensates. Example: I coast with ~800rpm, then the unlock happens, the rpm drops to ~650, then raises to ~750. During this, I can feel the jerk you describe.
For me, moving from D to N is also not smooth and I can feel a similar "stall" with oscilating rpms. (there is of course no real stall)
I guess that people who say that theirs car does not do it just aren't paying that attention or don't have such picky senses. My girlfriend doesn't feel none of the issues I do. Sometimes I wish I didn't as well
murcod, it's not really 4th gear, the real limit is 40km/h for you to be able to engage CC (confirmed by suzuki dealer). I don't like as well.
as for hilly driving, the issue is this, the "6th" gear on CVT - the lowest one is really really low, so if you go at highway speeds, the engine is running with no space for additional load, when you hit an uphill, after a few secs the CC will realize this and raise the rpms to compensate. Again, the CC module is kinda slow thinker, so by the time it realizes it needs to add some rpms, its too late to add "some" and actually needs to add "a lot", so the rpms do not raise smoothly as they should, but rather abruptly.
if you put the CVT in manual 6th gear, it'll not climb but the most gentle of hills and you'll just gradually loose speed .
The manual actually says "4th, 5th or 6th gear", and I know you cannot engage the cruise at 50km/h in 3rd gear- I tried it and was confused why it wouldn't work. (That's why I read the manual and found the above infoklement wrote: murcod, it's not really 4th gear, the real limit is 40km/h for you to be able to engage CC (confirmed by suzuki dealer). I don't like as well.
)PS: Remember I'm talking a 6 spd manual trans- not the CVT in manual mode. The CVT might be 40km/h (as most cruise systems seem to be that I've previously had.)
PPS: Just had another check of the manual and it says for CVT "select lever is in D position or the gear is in 3rd, 4th, 5th or 6th". It also does state speed must also be above 40km/h for both transmissions (- But I don't like my chances of getting anywhere near 40km/h in 4th gear without the engine being very unhappy!)
David
hmmm I did not get any info from the dealer regarding the manual, so I just assumed there is a speed limitmurcod wrote:The manual actually says "4th, 5th or 6th gear", and I know you cannot engage the cruise at 50km/h in 3rd gear- I tried it and was confused why it wouldn't work. (That's why I read the manual and found the above infoklement wrote: murcod, it's not really 4th gear, the real limit is 40km/h for you to be able to engage CC (confirmed by suzuki dealer). I don't like as well.
PS: Remember I'm talking a 6 spd manual trans- not the CVT in manual mode. The CVT might be 40km/h (as most cruise systems seem to be that I've previously had.)
PPS: Just had another check of the manual and it says for CVT "select lever is in D position or the gear is in 3rd, 4th, 5th or 6th". It also does state speed must also be above 40km/h for both transmissions (- But I don't like my chances of getting anywhere near 40km/h in 4th gear without the engine being very unhappy!)
btw. the CVT cruises with the engine @ ~1100rm and drops the rpm to this value once the torque converter locks and there is slight or none acceleration, which happens between 35-40km/h, at this rpm the engine is quiet if cruising, but under acceleration has a deep rumbling sound (if the acceleration is not hard enough to raise the rpms)
not sure how the manual gears are laid out, but I guess 1100 rpm should be fine for manual as well
50km/h is around 1700 - 1800rpm from memory and easily done on cruise control. It would be loading the engine too much at 40km/h and possibly not good for it long term? At least with the CVT it should "change down" when you accelerate or hit a hill- whereas the manual will just load the engine up more unless the driver changes down all the time (disengaging the cruise control in the process as soon as the clutch is depressed.)
David
You could probably engage a higher gear and let the rpm drop to around 1200-1300 if possible without much issues. A lot of cars here in Europe use these low rpms while cruising with automatic transmissions (even the dual-clutch ones, which is principally a manual transmission with computer aided shifting). Since the CVT drops the rpm to so low I think the engine should be able to handle it.murcod wrote:50km/h is around 1700 - 1800rpm from memory and easily done on cruise control. It would be loading the engine too much at 40km/h and possibly not good for it long term? At least with the CVT it should "change down" when you accelerate or hit a hill- whereas the manual will just load the engine up more unless the driver changes down all the time (disengaging the cruise control in the process as soon as the clutch is depressed.)
If you put the CVT in manual mode, it will behave the same, it will not downshift but load the engine to max, possibly loosing speed if the hill is too steep.
I tried it out with 4th gear at 40km/h and the engine was happy enough on level ground. Revs were around 1200-1300 as mentioned above. Goes to show how flexible the engine is for a 4 cylinder.
So levelish ground wouldn't be a problem.
So levelish ground wouldn't be a problem.
David