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

Transmission slam in low gears

Thread Tools
 
Search this Thread
 
Old Sep 4, 2009 | 12:06 PM
  #1  
demuslee's Avatar
demuslee
Thread Starter
Registered User
 
Joined: Aug 2009
Posts: 70
Likes: 0
From: Miami, Fl
Transmission slam in low gears

This is an awesome forum ... Its great reading everyone's experinces with their Gs. I just got mine in July and have broken 1200 miles. I love the ride and have experimented with the different modes. I have had similar issues that others have had with their transmissions like the engine braking which I don't mind. One thing that has happened a few times since I've had it is that when I'm going cruising slow in traffic like 20 mph, and then accelerate slightly the transmission sometimes slams into a lower gear with a noticable thump ... I've never heard this on any automatic transmission. Has anyone else experienced this?
Reply
Old Sep 4, 2009 | 12:56 PM
  #2  
brycerocket's Avatar
brycerocket
Registered User
 
Joined: Jun 2009
Posts: 68
Likes: 0
Please search the forums - there is an update out for this that will fix the problem.
Reply
Old Sep 4, 2009 | 02:31 PM
  #3  
mens_restroom's Avatar
mens_restroom
Registered User
 
Joined: Dec 2008
Posts: 9
Likes: 0
From: Where the manlist of man live
a thump you say? like a bowling ball hitting the back of your car?
Reply
Old Sep 8, 2009 | 01:18 PM
  #4  
demuslee's Avatar
demuslee
Thread Starter
Registered User
 
Joined: Aug 2009
Posts: 70
Likes: 0
From: Miami, Fl
Yea ... like a bowling ball. I checked for the updates and I dont think this is related to the new update for the engine braking and the flaring as this hasn't been a symptom listed. What the transmission does is it will downshift with a clunk and a very very hard downshift to the point the car jerks and u hear the thump/ clunk.
Reply
Old Sep 8, 2009 | 03:11 PM
  #5  
911turbo's Avatar
911turbo
Registered Member
iTrader: (3)
 
Joined: Jan 2009
Posts: 1,751
Likes: 42
From: Biloxi, MS
is this for 6mts also or autos?
Reply
Old Sep 8, 2009 | 04:13 PM
  #6  
Mysticalism's Avatar
Mysticalism
Registered User
iTrader: (1)
 
Joined: Mar 2009
Posts: 569
Likes: 1
From: Vancouver, B.C.
search forum.... theres tons of things like that on forum
Reply
Old Sep 8, 2009 | 09:02 PM
  #7  
ucla bruin's Avatar
ucla bruin
Registered User
iTrader: (7)
 
Joined: Nov 2007
Posts: 6,776
Likes: 3
From: Orange County
I read about this in another thread somewhere. I think there's already a discussion on it, can't remember the details. But like other people said, do a search.

Don't think 6mt would have this if you down shift rev match.
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
Reply
Old Sep 9, 2009 | 03:35 PM
  #8  
demuslee's Avatar
demuslee
Thread Starter
Registered User
 
Joined: Aug 2009
Posts: 70
Likes: 0
From: Miami, Fl
This is the 7AT ...I'll read through the other forums and see if I can find something there.
Thanks!
Reply
Old Oct 27, 2009 | 04:46 PM
  #9  
demuslee's Avatar
demuslee
Thread Starter
Registered User
 
Joined: Aug 2009
Posts: 70
Likes: 0
From: Miami, Fl
I took my G in to the dealership for maintenance and mentioned the slamming in low gears. The tech said that the TSB fix for the hard engine braking also fixes this because the transmission has a lag in lower gears when you accelerate. I havent felt the slam/ kick anymore so hopefully its fixed.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
PearlPereZ
Brakes & Suspension
41
Jun 21, 2016 06:35 PM
redlinernyc
Engine, Drivetrain & Forced-Induction
10
Feb 29, 2016 11:06 PM
r0cketm0nkey
General Tech Questions
17
Nov 23, 2015 03:34 AM
ZachThomas
Newbie Corner
2
Sep 3, 2015 01:40 PM




All times are GMT -4. The time now is 01:44 PM.