HELP!! Has problem 7AT in MANUAL mode

bumblez · 12-28-2009, 01:39 AM

Mine is 7speed AT and I usually use manual mode because I belive it's better then D mode. More powerful!!and fun!! you know..
However, here is my problem. I found this problem yesterday night When I was trying to stop at the red light. The gear should be down shift automatically when the car getting slow down and it should be smooth between changing gear. But my car had noise(grinding sounds from tranny) and shaked, between the gear 3 to 2.
Does anyone has this issue??

Trips · 12-28-2009, 01:59 AM

take it to your local dealer for a checkup! that's not normal.. and I don't have any issues with shaking between any of the gears...

kannibul · 12-28-2009, 02:37 PM

Quote:

Originally Posted by bumblez

Mine is 7speed AT and I usually use manual mode because I belive it's better then D mode. More powerful!!and fun!! you know..
However, here is my problem. I found this problem yesterday night When I was trying to stop at the red light. The gear should be down shift automatically when the car getting slow down and it should be smooth between changing gear. But my car had noise(grinding sounds from tranny) and shaked, between the gear 3 to 2.
Does anyone has this issue??

Has it done it since? Could have been road debris or you ran over something...and you heard it at the same time...

That said, an automatic transmission can't grind gears, all the gears are enguaged throughout the transmission (shifting occurs due parts of the transmission being held in place by clutch packs and/or bands)...

In any case, it would be a good idea to take it in.

nicknick · 12-28-2009, 03:08 PM

Quote:

Originally Posted by bumblez

Mine is 7speed AT and I usually use manual mode because I belive it's better then D mode. More powerful!!and fun!! you know..
However, here is my problem. I found this problem yesterday night When I was trying to stop at the red light. The gear should be down shift automatically when the car getting slow down and it should be smooth between changing gear. But my car had noise(grinding sounds from tranny) and shaked, between the gear 3 to 2.
Does anyone has this issue??

How hard have you been driving it? Do you use manual mode all the time? Bst thing to do is take it to the dealer and report back to us.

bumblez · 12-28-2009, 07:28 PM

I drive in manual mode all the time..
I will take it to dealer tomorrow and report back here

wstar · 12-29-2009, 12:13 AM

Definitely check in with the dealer if you have some kinda of strange grinding noise on shifts w/ the 7AT. I don't see how that would even be possible, honestly.

Somewhat lurchy 3->2->1 downshifts are the norm on the 7AT if you leave it in 3rd or higher while you brake down to a stop, but there shouldn't be any accompanying funny sounds. Solution if you don't like the lurches is either pop it into neutral (you're stopping anyways) or downshift for yourself earlier on.

I've got almost 14K miles on mine now and I've rarely ever had it in D, and mine's holding up fine.

370Z_Fan · 12-29-2009, 02:35 PM

Can you put the transmission into N (neutral) while in manual mode? Just curious.

nicknick · 12-29-2009, 03:22 PM

It seems to me some auto drivers think they have a manual car just because they drive around in manual mode all the time. This is a normal auto trasmission guys with a torque converter, I don't think it was designed to be driven like a manual alll the time, that would be a DSG type gearbox you're wanting. It sounds to me some auto guys wanted a manual but caould not be bothered shifting using a clutch. I don't know/think that thisauto would hold up well under these conditions, i beleive the manuafacturer probably intended for it to be used as an auto with the ocasional foray into m mode. jmho.

Trips · 12-29-2009, 03:28 PM

Quote:

Originally Posted by 370Z_Fan

Can you put the transmission into N (neutral) while in manual mode? Just curious.

No! you have to move the shifter to the N position

OldGuy · 12-29-2009, 03:52 PM

Quote:

Originally Posted by nicknick

It seems to me some auto drivers think they have a manual car just because they drive around in manual mode all the time. This is a normal auto trasmission guys with a torque converter, I don't think it was designed to be driven like a manual alll the time, that would be a DSG type gearbox you're wanting. It sounds to me some auto guys wanted a manual but caould not be bothered shifting using a clutch. I don't know/think that thisauto would hold up well under these conditions, i beleive the manuafacturer probably intended for it to be used as an auto with the ocasional foray into m mode. jmho.

Sorry. Computer malfunction.

OldGuy · 12-29-2009, 03:54 PM

Quote:

Originally Posted by OldGuy

Sorry. Computer malfunction.

I was just writing that I like the Z automatic. Nice ride with it and no distractions. Maybe I'll play with the paddles in a few months but had I wanted to shift I would have bought the manual.

wstar · 12-30-2009, 11:03 AM

Quote:

Originally Posted by 370Z_Fan

Can you put the transmission into N (neutral) while in manual mode? Just curious.

Unfortunately, no. You can shift the stick (through D) back to N, but then re-engagement in the gear you really want is a problem (for example, if you wanted to pull hard through 3rd, then drop into neutral for a few seconds, then re-engage 3rd, you can't really do that). I still use the stick to flip over to N when I'm coming down to a stop though.

Quote:

Originally Posted by nicknick

It seems to me some auto drivers think they have a manual car just because they drive around in manual mode all the time. This is a normal auto trasmission guys with a torque converter, I don't think it was designed to be driven like a manual alll the time, that would be a DSG type gearbox you're wanting. It sounds to me some auto guys wanted a manual but caould not be bothered shifting using a clutch. I don't know/think that thisauto would hold up well under these conditions, i beleive the manuafacturer probably intended for it to be used as an auto with the ocasional foray into m mode. jmho.

Actually, it holds up fine. If they didn't intend for it to be used, they wouldn't have put it on the car. Not being complete idiots, most people who bought the 7AT realize that AT stands for Automatic Transmission. We're aware it has a torque converter. Driving it in M all the time works great, and in high rpm situations with the xmission fully warmed up, the shifts are quite snappy. I'll summarize the real-world-important tradeoffs for you (for a person choosing between the 6MT and driving the 7AT in M mode all the time):

7AT Pros:
No clutch to mess with in daily driving.
You can put it in D when one hand is distracted by something or other and you're in a casual situation.
You can let your girlfriend (or other random person) drive your drunk *** home without worrying about them burning up your clutch or shocking your drivetrain.
Wider gearing range in both directions (lower lowest gear, higher highest gear, when you include the different rear diff in the calculations).
More initial torque thanks to the torque multiplication of the torque converter.
Easier launches.
One less task for your brain to deal with in complex driving situations (all shifts are just pushbutton clicks, allowing you to focus more attention on things like steering angle, wheel slip, body roll, throttle position, the other nearby cars, etc)
Both hands on the wheel all the time while shifting.

6MT Pros:
The 6MT can shift faster (assuming the user isn't an idiot)
The 6MT can be easily re-engaged from neutral to any chosen gear, the 7AT can't.
The 6MT makes you feel like a real man, thus empowering your internet forum e-penis, allowing you to poke fun at girly 7AT drivers.

nicknick · 12-30-2009, 02:59 PM

Quote:

Originally Posted by wstar

Unfortunately, no. You can shift the stick (through D) back to N, but then re-engagement in the gear you really want is a problem (for example, if you wanted to pull hard through 3rd, then drop into neutral for a few seconds, then re-engage 3rd, you can't really do that). I still use the stick to flip over to N when I'm coming down to a stop though.

Actually, it holds up fine. If they didn't intend for it to be used, they wouldn't have put it on the car. Not being complete idiots, most people who bought the 7AT realize that AT stands for Automatic Transmission. We're aware it has a torque converter. Driving it in M all the time works great, and in high rpm situations with the xmission fully warmed up, the shifts are quite snappy. I'll summarize the real-world-important tradeoffs for you (for a person choosing between the 6MT and driving the 7AT in M mode all the time):

7AT Pros:
No clutch to mess with in daily driving.
You can put it in D when one hand is distracted by something or other and you're in a casual situation.
You can let your girlfriend (or other random person) drive your drunk *** home without worrying about them burning up your clutch or shocking your drivetrain.
Wider gearing range in both directions (lower lowest gear, higher highest gear, when you include the different rear diff in the calculations).
More initial torque thanks to the torque multiplication of the torque converter.
Easier launches.
One less task for your brain to deal with in complex driving situations (all shifts are just pushbutton clicks, allowing you to focus more attention on things like steering angle, wheel slip, body roll, throttle position, the other nearby cars, etc)
Both hands on the wheel all the time while shifting.

6MT Pros:
The 6MT can shift faster (assuming the user isn't an idiot)
The 6MT can be easily re-engaged from neutral to any chosen gear, the 7AT can't.
The 6MT makes you feel like a real man, thus empowering your internet forum e-penis, allowing you to poke fun at girly 7AT drivers.

Well that's it then, that last point is all that matters isnt it? I'm detecting bias towards the AT from you, I guess both are good transmissions but I am just concerned/questioning the reliabilty/durability of the auto. Also judging by the lack of forum complaints regarding the auto I can surmise it is ok.

370Z_Fan · 12-30-2009, 04:16 PM

Another question: does the transmission hold gear? Like when you're in 1st gear and you hit redline will the tranny upshift automatically? Similary, when you're slowing to a stop will the tranny automatically drop down to 1st gear at a stop?

NXTAZEE · 12-30-2009, 05:00 PM

Quote:

Originally Posted by nicknick

It seems to me some auto drivers think they have a manual car just because they drive around in manual mode all the time. This is a normal auto trasmission guys with a torque converter, I don't think it was designed to be driven like a manual alll the time, that would be a DSG type gearbox you're wanting. It sounds to me some auto guys wanted a manual but caould not be bothered shifting using a clutch. I don't know/think that thisauto would hold up well under these conditions, i beleive the manuafacturer probably intended for it to be used as an auto with the ocasional foray into m mode. jmho.

Yes we are all uninformed lazy idiots who couldn't be bothered shifting gears with a manual clutch

.

12-28-2009, 01:39 AM	#1 (permalink)
bumblez Enthusiast Member Join Date: Sep 2009 Location: VA Posts: 326 Drives: Amuse 370z Rep Power: 16	HELP!! Has problem 7AT in MANUAL mode Mine is 7speed AT and I usually use manual mode because I belive it's better then D mode. More powerful!!and fun!! you know.. However, here is my problem. I found this problem yesterday night When I was trying to stop at the red light. The gear should be down shift automatically when the car getting slow down and it should be smooth between changing gear. But my car had noise(grinding sounds from tranny) and shaked, between the gear 3 to 2. Does anyone has this issue?? Ben Bazz likes this.

12-28-2009, 01:59 AM	#2 (permalink)
Trips Administrator Join Date: May 2009 Location: Disneyland, Ca Posts: 8,732 Drives: 🔰 Rep Power: 10	take it to your local dealer for a checkup! that's not normal.. and I don't have any issues with shaking between any of the gears... __________________

12-29-2009, 12:13 AM	#6 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3595	Definitely check in with the dealer if you have some kinda of strange grinding noise on shifts w/ the 7AT. I don't see how that would even be possible, honestly. Somewhat lurchy 3->2->1 downshifts are the norm on the 7AT if you leave it in 3rd or higher while you brake down to a stop, but there shouldn't be any accompanying funny sounds. Solution if you don't like the lurches is either pop it into neutral (you're stopping anyways) or downshift for yourself earlier on. I've got almost 14K miles on mine now and I've rarely ever had it in D, and mine's holding up fine. __________________ 7AT Track Car! Journal thread / Car setup details

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12-28-2009, 07:28 PM	#5 (permalink)
bumblez Enthusiast Member Join Date: Sep 2009 Location: VA Posts: 326 Drives: Amuse 370z Rep Power: 16	I drive in manual mode all the time.. I will take it to dealer tomorrow and report back here

12-29-2009, 02:35 PM	#7 (permalink)
370Z_Fan Base Member Join Date: Apr 2009 Location: Toronto, ON Posts: 238 Drives: 2010 MB ZR sport pkg Rep Power: 17	Can you put the transmission into N (neutral) while in manual mode? Just curious.

12-29-2009, 03:22 PM	#8 (permalink)
nicknick Enthusiast Member Join Date: Jan 2009 Location: Australia Posts: 438 Drives: Mazda mx5 2007 6sp m Rep Power: 17	It seems to me some auto drivers think they have a manual car just because they drive around in manual mode all the time. This is a normal auto trasmission guys with a torque converter, I don't think it was designed to be driven like a manual alll the time, that would be a DSG type gearbox you're wanting. It sounds to me some auto guys wanted a manual but caould not be bothered shifting using a clutch. I don't know/think that thisauto would hold up well under these conditions, i beleive the manuafacturer probably intended for it to be used as an auto with the ocasional foray into m mode. jmho.

12-30-2009, 04:16 PM	#14 (permalink)
370Z_Fan Base Member Join Date: Apr 2009 Location: Toronto, ON Posts: 238 Drives: 2010 MB ZR sport pkg Rep Power: 17	Another question: does the transmission hold gear? Like when you're in 1st gear and you hit redline will the tranny upshift automatically? Similary, when you're slowing to a stop will the tranny automatically drop down to 1st gear at a stop?