7AT downshift from 3rd to 2nd in manual mode

hansoac · 06-10-2011, 07:30 PM

So today as I was driving home from work I had the Z in manual mode with VSD off. It was just the open road and I so I wanted to have a LITTLE fun. Well as I was approaching a stoplight, I noticed the car made a pop sound almost like you took two rocks and slammed them together. I also could feel it on the shifter. I decided to put it back into auto mode and couldn't seem to replicate the issue. Has anyone else experienced this? I would think if it were the tranny taking a dump it would be rough through all gears but I could be wrong. Was just curious if any other 7AT owners have experienced this?

b1adesofcha0s · 06-10-2011, 07:32 PM

Nope, never happened to me.

Baer383 · 06-10-2011, 07:39 PM

I've never had nothing but smooth up & down shifts.

hansoac · 06-10-2011, 07:42 PM

What year and how many miles you guys have? I have an 09 with 10.5 k.

b1adesofcha0s · 06-10-2011, 07:45 PM

09 with around 24k miles.

sonic370 · 06-10-2011, 07:53 PM

none here. think i would have that checked out. not normal

Baer383 · 06-10-2011, 07:55 PM

2010 but I only have 2400 miles on it.

hansoac · 06-10-2011, 07:56 PM

yeah I am going to take it in tomorrow and have them look at this AND the stuttering/stalling after cold start issue that they have "fixed" once already.
So sad..this is basically a brand new car

b1adesofcha0s · 06-10-2011, 08:07 PM

Good luck with getting everything fixed

my2004Z · 03-01-2013, 10:09 PM

OP, so what finally happened? Mine has done this a few times on cold mornings but was pretty consistent this morning where it did it like 4 times in a row and even in auto mode. It's almost like the rev matching is screwing up or forgetting what its supposed to do. This evening on the drive home it didn't make a peep. I am going to disconnect the battery and see if a system reboot helps it out. I'll be mentioning it at my 30K mile service appointment in a couple of weeks.

Wonka2581 · 03-01-2013, 10:33 PM

Yes please keep is posted on this,

Wonka2581 · 03-01-2013, 10:33 PM

Us*

LakeShow · 03-02-2013, 12:32 AM

Never had an issue here, 2013 4k miles. I do actually sometimes see the car fail to hold gears/revs and the RPMs just dip if I'm not pressing gas and then the RPMs just jump back up when I hit the gas. Also sometimes when I downshift the gears don't properly downshift but the revs just dip and the revs don't jump up on the downshifts. Happened a few times to me, not sure what it is, having the A/C on or very cold weather? I have no idea.

Dlm6568 · 03-02-2013, 01:51 AM

something similr happens to mine, but only cold mornings when the engine has't got to full operating temp. It seems to forget to synch rev, kind of an abrupt downshift, always betwwen 2nd to1st. but once the temp comes up never happens.

Is that the computer being too smart?

Haboob · 03-02-2013, 01:58 AM

Quote:

Originally Posted by LakeShow

Never had an issue here, 2013 4k miles. I do actually sometimes see the car fail to hold gears/revs and the RPMs just dip if I'm not pressing gas and then the RPMs just jump back up when I hit the gas. Also sometimes when I downshift the gears don't properly downshift but the revs just dip and the revs don't jump up on the downshifts. Happened a few times to me, not sure what it is, having the A/C on or very cold weather? I have no idea.

Haven't had that happen on mine at all.

But, the only difference is weather really - so that could be what's causing it.

06-10-2011, 07:30 PM	#1 (permalink)
hansoac Enthusiast Member Join Date: Feb 2011 Location: Toledo Posts: 497 Drives: 09 370z Sport CY Rep Power: 14	7AT downshift from 3rd to 2nd in manual mode So today as I was driving home from work I had the Z in manual mode with VSD off. It was just the open road and I so I wanted to have a LITTLE fun. Well as I was approaching a stoplight, I noticed the car made a pop sound almost like you took two rocks and slammed them together. I also could feel it on the shifter. I decided to put it back into auto mode and couldn't seem to replicate the issue. Has anyone else experienced this? I would think if it were the tranny taking a dump it would be rough through all gears but I could be wrong. Was just curious if any other 7AT owners have experienced this?

06-10-2011, 07:32 PM	#2 (permalink)
b1adesofcha0s A True Z Fanatic Join Date: Jan 2011 Location: MD Posts: 40,963 Drives: HypeTrain Choo Choo! Rep Power: 141	Nope, never happened to me. __________________ Project: b1adeZmobile (2009 370Z) \| Uprev Tune by AAM Competition \| Berk Exhaust Project: b1adeZmobile 2.0 (2014 C7 Z51) \| Corsa Xtreme Exhaust

06-10-2011, 07:39 PM	#3 (permalink)
Baer383 A True Z Fanatic Join Date: Aug 2010 Location: Lawrenceville,Ga Posts: 4,293 Drives: My foot up your azz Rep Power: 29	I've never had nothing but smooth up & down shifts. __________________ 2013 ZL1 754 rwhp 747 rwtq

06-10-2011, 07:45 PM	#5 (permalink)
b1adesofcha0s A True Z Fanatic Join Date: Jan 2011 Location: MD Posts: 40,963 Drives: HypeTrain Choo Choo! Rep Power: 141	09 with around 24k miles. __________________ Project: b1adeZmobile (2009 370Z) \| Uprev Tune by AAM Competition \| Berk Exhaust Project: b1adeZmobile 2.0 (2014 C7 Z51) \| Corsa Xtreme Exhaust

06-10-2011, 07:55 PM	#7 (permalink)
Baer383 A True Z Fanatic Join Date: Aug 2010 Location: Lawrenceville,Ga Posts: 4,293 Drives: My foot up your azz Rep Power: 29	2010 but I only have 2400 miles on it. __________________ 2013 ZL1 754 rwhp 747 rwtq

06-10-2011, 07:42 PM	#4 (permalink)
hansoac Enthusiast Member Join Date: Feb 2011 Location: Toledo Posts: 497 Drives: 09 370z Sport CY Rep Power: 14	What year and how many miles you guys have? I have an 09 with 10.5 k.

06-10-2011, 07:53 PM	#6 (permalink)
sonic370 A True Z Fanatic Join Date: May 2010 Location: Orange Texas Posts: 1,574 Drives: 09 370Z Sports PGK Rep Power: 18	none here. think i would have that checked out. not normal

06-10-2011, 07:56 PM	#8 (permalink)
hansoac Enthusiast Member Join Date: Feb 2011 Location: Toledo Posts: 497 Drives: 09 370z Sport CY Rep Power: 14	yeah I am going to take it in tomorrow and have them look at this AND the stuttering/stalling after cold start issue that they have "fixed" once already. So sad..this is basically a brand new car

06-10-2011, 08:07 PM	#9 (permalink)
b1adesofcha0s A True Z Fanatic Join Date: Jan 2011 Location: MD Posts: 40,963 Drives: HypeTrain Choo Choo! Rep Power: 141	Good luck with getting everything fixed __________________ Project: b1adeZmobile (2009 370Z) \| Uprev Tune by AAM Competition \| Berk Exhaust Project: b1adeZmobile 2.0 (2014 C7 Z51) \| Corsa Xtreme Exhaust

03-01-2013, 10:09 PM	#10 (permalink)
my2004Z Enthusiast Member Join Date: Apr 2009 Location: New Mexico, USA Posts: 285 Drives: 09' 370Z w/Sport 7AT Rep Power: 37	OP, so what finally happened? Mine has done this a few times on cold mornings but was pretty consistent this morning where it did it like 4 times in a row and even in auto mode. It's almost like the rev matching is screwing up or forgetting what its supposed to do. This evening on the drive home it didn't make a peep. I am going to disconnect the battery and see if a system reboot helps it out. I'll be mentioning it at my 30K mile service appointment in a couple of weeks.

03-01-2013, 10:33 PM	#11 (permalink)
Wonka2581 A True Z Fanatic Join Date: Nov 2012 Location: Chattanooga, TN Posts: 3,083 Drives: MY WIFE CRAZY.... Rep Power: 2611	Yes please keep is posted on this, __________________ "I have nothing to offer but blood, toil, tears and sweat""Winston Churchill"

03-01-2013, 10:33 PM	#12 (permalink)
Wonka2581 A True Z Fanatic Join Date: Nov 2012 Location: Chattanooga, TN Posts: 3,083 Drives: MY WIFE CRAZY.... Rep Power: 2611	Us* __________________ "I have nothing to offer but blood, toil, tears and sweat""Winston Churchill"

03-02-2013, 12:32 AM	#13 (permalink)
LakeShow A True Z Fanatic Join Date: Dec 2010 Location: L.I., NY Posts: 5,307 Drives: Everything Rep Power: 25	Never had an issue here, 2013 4k miles. I do actually sometimes see the car fail to hold gears/revs and the RPMs just dip if I'm not pressing gas and then the RPMs just jump back up when I hit the gas. Also sometimes when I downshift the gears don't properly downshift but the revs just dip and the revs don't jump up on the downshifts. Happened a few times to me, not sure what it is, having the A/C on or very cold weather? I have no idea. __________________ \|2013 Audi S4\|Ibis White/Black\|S-Tronic P+\| \|2013 370z\|PearlWhite/Persimmon\|Touring/Sport/Nav\|F.I. CBE 18" CF\| \|Sold\|2011 370z\|Gun Metallic\|Touring/Sport/Nav\|

03-02-2013, 01:51 AM	#14 (permalink)
Dlm6568 Base Member Join Date: Jan 2013 Location: New Jersey Posts: 96 Drives: 2012 GM 7AT Tour Rep Power: 12	something similr happens to mine, but only cold mornings when the engine has't got to full operating temp. It seems to forget to synch rev, kind of an abrupt downshift, always betwwen 2nd to1st. but once the temp comes up never happens. Is that the computer being too smart? __________________ Proclips iPhone 5 cradle Stillen front plate relocator Upcoming: Gemini exhaust, Injen intake, TBD

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