Accelerating After Throttle Lift-off
#1
Accelerating After Throttle Lift-off
Yesterday, while doing a run. I noticed this.
WOT off the lights, 1st gear, 2nd, 3rd, then in 4th, i lifted off the gas, for a split second, the car still kept on accelerating. An eye opener no doubt.
What is the issue here??????? This is the 1st time it has happened.
WOT off the lights, 1st gear, 2nd, 3rd, then in 4th, i lifted off the gas, for a split second, the car still kept on accelerating. An eye opener no doubt.
What is the issue here??????? This is the 1st time it has happened.
#4
#7
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#8
My bet is inertia from the flywheel keeping the motor going for a split second after getting off the throttle.
#10
My car has an issue like this. It happed when coming to a stop. I take my foot off the gas and put it on the brake, before I apply allot of force the car surges forward. If you were no prepared for it you would hit the car in front of you. I told my MA about the issue, he gave me some BS about "the computer says there's nothing wrong" and "Its the nature of the beast". The funny part is I have heard those lines before with other issues. lol
#14
My car has an issue like this. It happed when coming to a stop. I take my foot off the gas and put it on the brake, before I apply allot of force the car surges forward. If you were no prepared for it you would hit the car in front of you. I told my MA about the issue, he gave me some BS about "the computer says there's nothing wrong" and "Its the nature of the beast". The funny part is I have heard those lines before with other issues. lol
#15
It feels almost like the car is downshifting as its coming to a stop. This extra surge of forward torque might be what we are feeling?? any thoughts? I have also felt a delay sometimes when accelerating. It takes 1/4 throttle to get a response. Then when it does its a very harsh reaction. Its like the trans is not in the right gear, then it reacts. They tried to say it was turbo lag lol. I said I know what lag feels like!! The whole point of twin_scroll is to eliminate it.
#16
It feels almost like the car is downshifting as its coming to a stop. This extra surge of forward torque might be what we are feeling?? any thoughts? I have also felt a delay sometimes when accelerating. It takes 1/4 throttle to get a response. Then when it does its a very harsh reaction. Its like the trans is not in the right gear, then it reacts. They tried to say it was turbo lag lol. I said I know what lag feels like!! The whole point of twin_scroll is to eliminate it.
The 1/4 throttle to get a response is a symptom of the trans being in the wrong gear, per se. Unless you're in sport mode the auto trans starts out in 2nd gear instead of 1st, hence you needing to push the throttle in a good bit before it gets enough power to accelerate. Try driving around with sport mode activated. It's seriously like night and day with the auto trans, insane - instant strong acceleration upon even tapping the throttle (both from a stop and in traffic), tons of engine braking in all the right places, and almost instantaneous shifts (especially while in manual mode). Only compromise is you get a pretty significant hit on fuel economy.
#17
The auto trans does downshift pretty noticeable when coming to a stop, even more so when in sport mode. I'm not sure if it's 'the nature of the beast' or just my having to get used to a six speed when I've always driven four's.
The 1/4 throttle to get a response is a symptom of the trans being in the wrong gear, per se. Unless you're in sport mode the auto trans starts out in 2nd gear instead of 1st, hence you needing to push the throttle in a good bit before it gets enough power to accelerate. Try driving around with sport mode activated. It's seriously like night and day with the auto trans, insane - instant strong acceleration upon even tapping the throttle (both from a stop and in traffic), tons of engine braking in all the right places, and almost instantaneous shifts (especially while in manual mode). Only compromise is you get a pretty significant hit on fuel economy.
The 1/4 throttle to get a response is a symptom of the trans being in the wrong gear, per se. Unless you're in sport mode the auto trans starts out in 2nd gear instead of 1st, hence you needing to push the throttle in a good bit before it gets enough power to accelerate. Try driving around with sport mode activated. It's seriously like night and day with the auto trans, insane - instant strong acceleration upon even tapping the throttle (both from a stop and in traffic), tons of engine braking in all the right places, and almost instantaneous shifts (especially while in manual mode). Only compromise is you get a pretty significant hit on fuel economy.
Thanks for the input. I guess my MA doesn't have to much knowledge of how the Mini works. They would rather say there is no issue and send you on your way
v Thanks
#18
So at least now i know its just my car.
How can i get a solution to this problem?
It's like an accident waiting to happen.
I've has my Aprilia RSVR Factory which has a pull-push throttle jam opened 2 years back. Crashed and wrote it off. The Aprilia imported in my country refsed to accept any responsibility in their product.
Do not want a similar experience.
How can i get a solution to this problem?
It's like an accident waiting to happen.
I've has my Aprilia RSVR Factory which has a pull-push throttle jam opened 2 years back. Crashed and wrote it off. The Aprilia imported in my country refsed to accept any responsibility in their product.
Do not want a similar experience.
#19
I actually recognized this 'surging' for the first time today. Strangely enough, however, I only recognized it after braking pretty heavily as I came to a stop at a light after some pretty spirited driving. It almost seemed as if there was 'left over torque' from my having accelerated just a couple seconds before, and when I let go of the brakes the engine just seemed to want to take right off. All without my even hitting the gas.
One thing I recognized is that it only does this while in sport mode. In my MINI at least, it seems to be a result of the auto trans selecting first gear really late as you're coming to a stop. Like as I'm slowing it'll stay in second gear, and suddenly engage first at like 5mph. So I'm guessing it must be linked to this as a I never get the surge while in 'non-sport mode' since the trans doesn't make use of first.
One thing I recognized is that it only does this while in sport mode. In my MINI at least, it seems to be a result of the auto trans selecting first gear really late as you're coming to a stop. Like as I'm slowing it'll stay in second gear, and suddenly engage first at like 5mph. So I'm guessing it must be linked to this as a I never get the surge while in 'non-sport mode' since the trans doesn't make use of first.
#20
My car has an issue like this. It happed when coming to a stop. I take my foot off the gas and put it on the brake, before I apply allot of force the car surges forward. If you were no prepared for it you would hit the car in front of you. I told my MA about the issue, he gave me some BS about "the computer says there's nothing wrong" and "Its the nature of the beast". The funny part is I have heard those lines before with other issues. lol
#23
thing is the Mini Dealer here told me it's one of the Mini's characteristics. OMG!
#24
I was sitting at a stop light, and was getting rather bored. Was in neutral, and I just tapped the gas pedal. RPM's jumped by one to two hundred... I let off the throttle, RPM's went down then sprung right back up. Sounds like a similar issue; I will probabily ask my dealer about this one too.
#25
The inertia again... inertia doesn't add acceleration. The car could go at the speed it was traveling at but not faster by accelerating. I respect all opinions but I disagree with this one.