Engine, Drivetrain & Forced-Induction
Have Technical Questions or Done Modifications to the G37? Find out the answer in here!

Low Speed Bog w/ 7AT

Thread Tools
 
Search this Thread
 
Old 03-13-2010, 07:21 AM
  #16  
cdso
Registered User
Thread Starter
 
cdso's Avatar
 
Join Date: Feb 2010
Posts: 293
Likes: 0
Received 0 Likes on 0 Posts
Maybe because their accelerator pedal is stuck?? haha.

I hear you on the lack of torque thing. Kind of embarrassing!

And I agree with MW09G37, a 6AT would have been perfect.
Old 03-13-2010, 10:41 AM
  #17  
mindonmatter
Registered User
 
mindonmatter's Avatar
 
Join Date: Apr 2009
Location: Houston, TX
Posts: 324
Likes: 0
Received 0 Likes on 0 Posts
Add me to the list of annoyed 7AT owners. The bogging is really annoying. The upshift flare is also something that isn't acceptable.
Old 03-13-2010, 02:56 PM
  #18  
gugarci
Registered User
 
gugarci's Avatar
 
Join Date: Jul 2007
Location: Bergen County, NJ
Posts: 541
Received 4 Likes on 3 Posts
I have that. The quick solution is to use your paddle shift for a quick downshift. providing your car has them. And after a few seconds or more depending on how hard you stepping on the gas the transmission will settle into "D" again.
Old 03-20-2010, 05:02 PM
  #19  
g37girl66
Registered User
 
g37girl66's Avatar
 
Join Date: Mar 2010
Posts: 6
Likes: 0
Received 0 Likes on 0 Posts
Add me to that list as well ...

2009 G37x AWD sedan , 3000 M

I went to dealer today and verified that my TCM is not on the TSB list., so made an appointment on Wed. for further investigation. I am not convinced it is normal.
Old 03-20-2010, 05:22 PM
  #20  
CodeG
Registered User
 
CodeG's Avatar
 
Join Date: Jan 2010
Posts: 248
Likes: 0
Received 6 Likes on 6 Posts
I noticed this too, specially after a long drive the trans stay at 7th gear at 1000rpm. If you have paddle shifter then use it, otherwise just step on the gas and it will down shift.
Old 03-20-2010, 05:30 PM
  #21  
cdso
Registered User
Thread Starter
 
cdso's Avatar
 
Join Date: Feb 2010
Posts: 293
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by g37girl66
Add me to that list as well ...

2009 G37x AWD sedan , 3000 M

I went to dealer today and verified that my TCM is not on the TSB list., so made an appointment on Wed. for further investigation. I am not convinced it is normal.
Let us know what the dealer says if you could.

Personally I'd rather have the extra performance rather than save a few miles per gallon.
Old 03-20-2010, 06:32 PM
  #22  
freesurfer
Registered Member
 
freesurfer's Avatar
 
Join Date: Jun 2009
Location: Bay Area, CA
Posts: 249
Likes: 0
Received 0 Likes on 0 Posts
Isn't Black Betty's grounding kit supposed to help with the timing of AT shifts? Supposed to make shifting faster?
Old 03-20-2010, 06:37 PM
  #23  
w0ady
Registered User
iTrader: (1)
 
w0ady's Avatar
 
Join Date: Apr 2006
Location: jacksonville, fl
Posts: 4,563
Likes: 0
Received 0 Likes on 0 Posts
auto is meant to be boggish. if you want sporty, go ds. if you want more fun, go manual.
Old 03-20-2010, 06:44 PM
  #24  
cdso
Registered User
Thread Starter
 
cdso's Avatar
 
Join Date: Feb 2010
Posts: 293
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by freesurfer
Isn't Black Betty's grounding kit supposed to help with the timing of AT shifts? Supposed to make shifting faster?
Yeah, supposed to help, but I don't think it's a night/day kind of thing. Some have said they felt a difference, others nothing at all.
Old 03-21-2010, 02:54 PM
  #25  
ozzypriest
Registered Member
iTrader: (2)
 
ozzypriest's Avatar
 
Join Date: Jun 2009
Location: Deep South MS
Posts: 745
Received 13 Likes on 10 Posts
don't get me started on grounding kits...
Old 03-21-2010, 11:37 PM
  #26  
gsm026
Registered Member
 
gsm026's Avatar
 
Join Date: Oct 2009
Location: Northern Colorado, USA
Posts: 317
Received 14 Likes on 14 Posts
Yeah, it's kind of embarrasing to get beat by a Dodge truck because you're at 15 mph in 2nd gear and the car doesn't downshift. There are several points like that where the car's acceleration is pretty weak because it won't downshift. I guess I need to get good at using the paddles.

I almost never manually downshifted my old TL, but it wasn't necessary as the 5 speed AT shift patterns were very well refined. It always downshifted when it needed to.

Greg
Old 03-21-2010, 11:56 PM
  #27  
cereal2k
Mr. Drop it like it's hot
iTrader: (10)
 
cereal2k's Avatar
 
Join Date: Dec 2009
Location: Lawrenceville, GA
Posts: 6,135
Received 39 Likes on 31 Posts
I'm starting to use the paddle shifter more now since I've added an exhaust without the silencers, and I hear the drone in 7th gear while at 40MPH or below and the downshift had not occurred yet to say 4th or so. Just figured out where the drone was coming from today since it's the 7AT and the exhaust note is more pronounced.
Old 03-28-2010, 02:04 PM
  #28  
g37girl66
Registered User
 
g37girl66's Avatar
 
Join Date: Mar 2010
Posts: 6
Likes: 0
Received 0 Likes on 0 Posts
OK, I went to the dealer on Wed. A technician did a testing drive, he told me it is normal and give me a lot details about why which I hardly rememeber. In summary, it is a Infiniti new technology. The transmission is up 2 shifts intead of one , so user can feel the harsh shift. I guess Infiniti pursue so-called high tech and leave a basic thing out which is a smoth comforable driving.

I am thinking to escalate to 3rd party to evaluate if it is a design issue
Old 03-28-2010, 07:23 PM
  #29  
terrycs
Registered Member
iTrader: (37)
 
terrycs's Avatar
 
Join Date: Dec 2006
Location: Southern California
Posts: 1,337
Received 9 Likes on 9 Posts
Same issue on my 5AT. D upshifts too soon. DS is too unpredictable because it depends on how you drive it (don't need to be shifting at redline on the hwy in traffic).

M seems best for me when I manually shift between 3K and 4K.
Old 03-28-2010, 07:48 PM
  #30  
eauty
Registered User
 
eauty's Avatar
 
Join Date: Dec 2009
Location: Grosse Pointe, MI
Posts: 89
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by mindonmatter
Add me to the list of annoyed 7AT owners. The bogging is really annoying. The upshift flare is also something that isn't acceptable.
What do you mean by "upshift flare"? I too agree with the bogging and will try the DS mode but was unsure what is meant by upshift flare.


Quick Reply: Low Speed Bog w/ 7AT



All times are GMT -4. The time now is 09:44 PM.