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YOUR RESEARCHTell me,
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Run car through a variety of tests
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Suggestion
Now having said that, I will give it a test on the way home to see if I can make it jerk and will report back the details.
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Suggestion
So if your using the gas reasonably, the car should be smooth.
Use tiniest amount of throttle at first....to the point
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Suggestion
BUT when doing so I only use the tiniest amount of throttle at first....to the point that I don't know what the car would do if given,say, 1/4 throttle under those conditions.
Use tiniest amount of throttle at first....to the point
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Suggestion
BUT when doing so I only use the tiniest amount of throttle at first....to the point that I don't know what the car would do if given,say, 1/4 throttle under those conditions.
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PLEASE!!!/fckeditor/editor/images/smiley/MWPX/beer2.gif
if you are driving in town (more like stop&go) in 2nd gear (stick), between 1´ and 2´ rpm and you take your foot of the throttle and then press it back on again, does your car jerk ? Is your throttle response under these conditions sort of jerky?
.....because mine does/fckeditor/editor/images/smiley/MWPX/cry_smile.gif, and before i run to the dealer, whos probably gonna say: they all do that...DO THEY REALLY ALL DO THAT?!?!?!
Please give me your observations,(ammoagains the dealer!!)fellow caymanites!/fckeditor/editor/images/smiley/MWPX/thanks.gif
Regards,
Nick
p.s. : absolutely all comments welcome!!!!!
Well I was in that kind of situation this morning and mine does not jerk providing I ease on the throttle, not jump on it and it also depends how low the rpm's are at the time. I seldom downshift back into first gear unless I am at a complete stop.
Now having said that, I will give it a test on the way home to see if I can make it jerk and will report back the details.
Russ
Thanks, Russ!
it sort of jerks 2 times: when lifting off the throttle, and then when stepping on it, even gently!
the weird thing is that its most noticably in 2 gear!
cheers,
nick
This is probably due to the shortness of 1st and 2nd gear. I actually started noticing this effect on more and more cars once 6-speed manuals starting hitting the market in mass many years ago. Adding the 6th gear shortens the first 5 gears. On cars with high torque engines, this effect is lessened since the engine has enough torque to damp out or overcomethe 'jerkiness'.
If you think this is bad, you should try to drive a heat soakedS2000 in stop and go traffic! Throttle smoothness is the key here.
Yes, I notice a little of this.......like others have said, I just think it's the nature of the beast......light car, powerful engine, short geared 6 speed, etc. While most other manufactures try and soften just about every hard edge on a car.......Porsche still leaves a bit of 'character' in its sport car drivetrains. If you drive it often and become one with the car it seems to help. If I haven't driven the CS in a few days, it always takes a bit of driving before I'm totally smooth again.
I haven't noticed this yet in normal mode but I have noticed in Sport mode that it can be a liitle jerky, abrupt might be a better way to descriobe it. Do you have Sport Chrono and is it on when you experience this?
I haven't encountered this problem in my CS, but it used to happenall the time in my S2000. Gas out of 1st, lift throttle suddenly to stop for pedestrian, and the resulting back-and-forth bucking was so awful it would actually cause my foot to blip the throttle again (unintentionally), causing yet more bucking and jerking. However, this only happened in 1st, not 2nd. You should not be having this problem in a Cayman, especially not in 2nd gear.If you havepasm and sports chrono, have you tried switching off the sport button? That should decrease your throttle sensitivity.
Nick---I think you may have an issue to at least discuss with your dealer. I am continually impressed with the flexibility of modern electronic/FI engines and our Cayman S's are relatively high specific output as well. As others have said, throttle opening( or only as much as will get a result at a given RPM) is the key. I have taken to rolling thru stop signs at 900-1000 RPM, no clutch, 2nd gear, zero traffic. BUT when doing so I only use the tiniest amount of throttle at first....to the point that I don't know what the car would do if given,say, 1/4 throttle under those conditions. So if your using the gas reasonably, the car should be smooth. At least mine is.
If the car jerks it is possibly telling you that your are not driving it correctly. It is feedback for the driver to use. Don't baby the revs in a Cayman and see if you don't have an improvement before taking it to the dealer.
Might just be a heavy foot. Sometimes in our need to speed off from a stop we tend to mash the throttle to hasten the acceleration. Add a little finesse.
I just ran my car through a variety of tests. Using only 2nd gear at various speeds and rpms it was really quite smooth.
I tried cruising along at 15 mph, 20 mph and 25 mph then applying various degrees of throttle, and found it very smooth up to about 23 mph, and then it just seemed to be a little torquey (sp). But I must say no jerkiness that I could feel, and I tried hard to make it bad, just didn't happen?
Russ
okay, thanks everyone!
i do not have Sports Chrono, and i really tried 'feathering' the throttle, but it still happens......
what i will do is get a loaner from the dealer and give it a try, see if the other car also has this effect.
does anybody have any idea what might be causing it??! i dont think its the electronics, because it only happens in 2nd gear( its a stick), so kinda tend to think it more of a drivetrain thing...
All comment and guesses wellcome!/fckeditor/editor/images/smiley/MWPX/thanks.gif
cheers,
Nick
NIck,
If it is indeed a problem I would bet that it is a simple electronic adjustment of the ECU. I just cannot think of anything mechanical that could cause that. Please let us know. You should go drive a loaner and see what you think.
Good luck,
Russ
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