bucking when shifting from 1st to 2nd..
bucking when shifting from 1st to 2nd..
Not sure what is wrong.. hoping you guys might have some advice. Basically, when I shift from 1st to 2nd, unless i rev it really high for shift, it does like 3 bucks.. Here is best way I can reproduce it..
Driving normal in 1st gear, RPMs hit like 4k, push clutch in (vac goes to -20), shift to 2nd, press gas a little and release clutch, as soon as it engages, it bucks about 3 times, not a huge buck, but enough of a pause to notice it every time.. It does it with the other gears as well but its really noticeable 1st to 2nd.
I took it to dealer and they told me its "normal" since its a supercharger.. however, I am taking it back tomorrow and test driving with tech at 7am. It has 22k miles on it too..
The Cat was replaced about 10k miles ago.. Other than that, no mods or changes to stock.
Please help..
thanks
Driving normal in 1st gear, RPMs hit like 4k, push clutch in (vac goes to -20), shift to 2nd, press gas a little and release clutch, as soon as it engages, it bucks about 3 times, not a huge buck, but enough of a pause to notice it every time.. It does it with the other gears as well but its really noticeable 1st to 2nd.
I took it to dealer and they told me its "normal" since its a supercharger.. however, I am taking it back tomorrow and test driving with tech at 7am. It has 22k miles on it too..
The Cat was replaced about 10k miles ago.. Other than that, no mods or changes to stock.
Please help..
thanks
I think i kinda know what your talkin about but i can't say i have the same problem, let say if i leave it in first and just hold it at 3k and then i left off, that then it kinda bucks. But i would say that it is just touchy, but i don't have that problem shifting into second. But GL
I think i kinda know what your talkin about but i can't say i have the same problem, let say if i leave it in first and just hold it at 3k and then i left off, that then it kinda bucks. But i would say that it is just touchy, but i don't have that problem shifting into second. But GL
I do it all the time when my gf is fixing her hair in the car lol
^^yeah, what they said. it can be torquey and very unforgiving because of something GM did with the tune. Torque management I believe it's called.
Once my tuner turned that off it drove like a different car.
Once my tuner turned that off it drove like a different car.
tune
Last edited by Rambotk3; Mar 30, 2009 at 01:38 PM. Reason: Automerged Doublepost
you get it tuned with HP tuners. Not saying it's 100% your problem, but it will help.
You get the tuner to turn off your torque management. I forget what it even does, but it limits certain aspects of your engine under lighter loads and makes the car a pain in the ass to drive, like if you're slowing down in traffic and get it down into 1st, and then traffic decides to go. If you push back down on the gas too much it'll buck like crazy because of the torque management. Mine doesn't do that anymore.
You get the tuner to turn off your torque management. I forget what it even does, but it limits certain aspects of your engine under lighter loads and makes the car a pain in the ass to drive, like if you're slowing down in traffic and get it down into 1st, and then traffic decides to go. If you push back down on the gas too much it'll buck like crazy because of the torque management. Mine doesn't do that anymore.
um it's not that he can't drive i've heard many people complain about it...
if you're not trying it will buck and bog i call it a bit in the 1st to 2nd shift. i know im not the only one who's noticed this. if you put effort into it you can do it but 99% of the time who cares lol.
the rest of the gears are smooth engagement trying or effortlessley..
if you're not trying it will buck and bog i call it a bit in the 1st to 2nd shift. i know im not the only one who's noticed this. if you put effort into it you can do it but 99% of the time who cares lol.
the rest of the gears are smooth engagement trying or effortlessley..
um it's not that he can't drive i've heard many people complain about it...
if you're not trying it will buck and bog i call it a bit in the 1st to 2nd shift. i know im not the only one who's noticed this. if you put effort into it you can do it but 99% of the time who cares lol.
the rest of the gears are smooth engagement trying or effortlessley..
if you're not trying it will buck and bog i call it a bit in the 1st to 2nd shift. i know im not the only one who's noticed this. if you put effort into it you can do it but 99% of the time who cares lol.
the rest of the gears are smooth engagement trying or effortlessley..
haha that is what i told myself in the beginning, but i got better! I hear people saying all the time that our cars are hard to learn to drive on, why is that. I learned on my car and really don't get to drive any other manual cars, so what make ours so different?
Not sure what is wrong.. hoping you guys might have some advice. Basically, when I shift from 1st to 2nd, unless i rev it really high for shift, it does like 3 bucks.. Here is best way I can reproduce it..
Driving normal in 1st gear, RPMs hit like 4k, push clutch in (vac goes to -20), shift to 2nd, press gas a little and release clutch, as soon as it engages, it bucks about 3 times, not a huge buck, but enough of a pause to notice it every time.. It does it with the other gears as well but its really noticeable 1st to 2nd.
I took it to dealer and they told me its "normal" since its a supercharger.. however, I am taking it back tomorrow and test driving with tech at 7am. It has 22k miles on it too..
The Cat was replaced about 10k miles ago.. Other than that, no mods or changes to stock.
Please help..
thanks
Driving normal in 1st gear, RPMs hit like 4k, push clutch in (vac goes to -20), shift to 2nd, press gas a little and release clutch, as soon as it engages, it bucks about 3 times, not a huge buck, but enough of a pause to notice it every time.. It does it with the other gears as well but its really noticeable 1st to 2nd.
I took it to dealer and they told me its "normal" since its a supercharger.. however, I am taking it back tomorrow and test driving with tech at 7am. It has 22k miles on it too..
The Cat was replaced about 10k miles ago.. Other than that, no mods or changes to stock.
Please help..
thanks
If you give it too much gas too quickly (more noticeable in lower gears), the car overfuels and you go rich a bit, then lean a bit, repeatedly until it evens itself out. This is the cause of that bucking. I had that problem until I tuned my car, now my car is smooth as hell between gears.
Having stock mounts simply amplifies this movement since they're so flexible.
Tune your MAF/VE tables. If it's a bog-jerk that's exactly what I was describing above. Torque management doesn't fix this unless it thinks you lost traction.


