I have the 7AT, and when i slow down at a stop sign or stop light, the transmission will shift from 2nd to 1st and the entire car will jerk
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04-14-2009, 03:55 PM | #1 (permalink) |
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Automatic 2-1 rough downshifting
I have the 7AT, and when i slow down at a stop sign or stop light, the transmission will shift from 2nd to 1st and the entire car will jerk like when you downshift a manual without syncro-rev matching. Has anyone else with the 7AT noticed this???? Will this go away after i put some miles on it? i have about 1000 miles already. Any help or advice would be great, i am planning on contacting the dealer about it, but i wanted to hear from anyone else on the forum who might know something that i don't.
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04-14-2009, 04:07 PM | #2 (permalink) |
A True Z Fanatic
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I have a 6MT so I can't comment specifically. However, perhaps I can start the discussion and be of some help.
First, this is occurring on an automatic downshift performed by the car? ie, you're not shifting from 2 to 1 on your own? If YOU were doing the shift, I'd tell you it's unnecessary to downshift from 2 to 1 while the car is still moving...just shift to 1st once stopped. Second, you might be able to circumvent this by shifting to neutral before coming to a complete stop, much as you do in a manual transmission. I haven't driven the 7AT in the 370Z, but many paddleshifters go to neutral with a 'double' paddle pull (ie both at the same time). If you did this when coming to a stop, it may avoid the issue. The most help will of course come from those who have the 7AT and I'm sure you're waiting for their input... |
04-14-2009, 04:26 PM | #3 (permalink) | |
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Quote:
That said, you can alleviate this by changing your behavior. Leaving it in D instead of M when coming down to a light helps, as does flipping it into neutral. You generally only notice it on slow deccels (like coming down to a light in heavy traffic), you'll never notice a problem when you're driving this car the way it wants to be driven (why on earth would you want to bring a Z to a complete stop? that's no fun!). Save M-mode for when you're really driving, and use D-mode in traffic. Your transmission, your gas mileage, and your passengers who no longer have to endure the 2-1 downshift jerk will thank you |
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04-14-2009, 04:29 PM | #5 (permalink) |
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He's talking about when you leave the shifter flipped to the left in "Manual" mode and come down to a stop very slowly, like at a traffic light. You start in a higher gear, and the car downshifts for you (very late, and very jerky by the time it gets down to the 2-1 shift). It's pretty noticeable.
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04-14-2009, 04:41 PM | #6 (permalink) | |
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Quote:
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04-14-2009, 05:36 PM | #7 (permalink) |
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You can shift into neutral in manual mode with the double paddle pull? Wow! Can anyone confirm this?
Oh wait, I have an auto. I'll check it out tonight...can't wait! New license plate idea: MY F355 |
04-14-2009, 08:22 PM | #9 (permalink) |
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I just checked, and there is no way to shift into neutral when in manual mode on the 370Z auto transmission.
If I am incorrect, please let me know... As for the F355, I know it's almost behind the times performance-wise (and definitely in reliability and maintenance), but it's about the looks, sound, and history of the marque and car for me... |
04-14-2009, 08:25 PM | #10 (permalink) |
A True Z Fanatic
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Drives: too slow
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No, you can't. I really wish there was an easier way to access neutral in the 7AT while in M-mode, but there isn't. When I referenced shifting to neutral earlier, that means pushing the shift lever to the right (back into D), and then forward a notch into N.
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