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-   -   Problem help (http://www.the370z.com/engine-drivetrain/70176-problem-help.html)

Naum16 04-21-2013 09:49 PM

Problem help
 
I have a 09 370z 7AMT and the problem i have only occurs when im in sports mode going from 2 to 1 by it's self. When it drops to 1 by its self when i creep to a stop sign theres a odd click doesnt sound smooth. i dont have the problem in auto but everytime it doesnt go down to 1st smooth unless i do a hard break. Has anyone had this problem?

Trips 04-21-2013 11:59 PM

Thats pretty normal.

The transmission is not very smooth coming to a stop from 2nd to first in manual/sport mode

CDepp 04-22-2013 12:10 AM

Don't creep to a stop in your z. You have the sports pkg with the big brakes. While it doesn't hurt them, they operate much better under moderate to heavy braking. Now, to the question: I'm guessing if you're in sports mode, the car is gauging your speed as if it were having the brakes applied by a person wanting to be in sports mode, not creeping to stops. Check to see if the downshift changes out of sports mode, and waits until you're almost at a dead stop.

DEpointfive0 04-22-2013 12:53 AM

7AT!!! Lol
No "M"

danelonson 04-22-2013 09:22 AM

Quote:

Originally Posted by CDepp (Post 2278169)
Don't creep to a stop in your z. You have the sports pkg with the big brakes.

I noticed this on my sport package 7AT as well. It doesn't matter if I'm in sports mode or D, if I creep to a stop it shifts hard (jerks the car forward) from 2nd to 1st. But if I brake a little harder, it doesn't do it unless I brake extremely hard then it does it sometimes. I believe that its the computer fuggin' up and not downshifting properly unless its my tranny that's messed up:icon14: I bought the Z with the intention of keeping it for as long as possible but I have a feeling that my transmission isn't gonna last very long :mad:

Naum16 04-22-2013 09:23 AM

When i approach a stop sign and going to a rolling stop dropping into 1st from second around 1,000rpm) theres a click that i can hear i cant tell if its normal or bad.

Naum16 04-22-2013 09:26 AM

7AT Sorry lol

Naum16 04-22-2013 11:05 AM

It can't be the tranny because when you drive it shifts up smooth it's just when coming to those odd stops

Naum16 04-22-2013 11:12 AM

Is this a big problem, can it really be the tranny
 
Quote:

Originally Posted by danelonson (Post 2278417)
I noticed this on my sport package 7AT as well. It doesn't matter if I'm in sports mode or D, if I creep to a stop it shifts hard (jerks the car forward) from 2nd to 1st. But if I brake a little harder, it doesn't do it unless I brake extremely hard then it does it sometimes. I believe that its the computer fuggin' up and not downshifting properly unless its my tranny that's messed up:icon14: I bought the Z with the intention of keeping it for as long as possible but I have a feeling that my transmission isn't gonna last very long :mad:

please help if possible , what to do

Naum16 04-22-2013 11:13 AM

^ exactly what is going on with me to. It's really odd. And really starting to bother me any experts know what going on

chrischhorn 04-22-2013 01:26 PM

Try changing your trans fluid to start?

Naum16 04-22-2013 01:40 PM

I thought the 7AT trans is mant. free and if i tried i couldnt locate where its at.

CDepp 04-22-2013 02:10 PM

Quote:

Originally Posted by danelonson (Post 2278417)
I noticed this on my sport package 7AT as well. It doesn't matter if I'm in sports mode or D, if I creep to a stop it shifts hard (jerks the car forward) from 2nd to 1st. But if I brake a little harder, it doesn't do it unless I brake extremely hard then it does it sometimes. I believe that its the computer fuggin' up and not downshifting properly unless its my tranny that's messed up:icon14: I bought the Z with the intention of keeping it for as long as possible but I have a feeling that my transmission isn't gonna last very long :mad:

Interesting that it happens in or out of S-mode. As for the braking, you'll get squeal if you gently apply the brakes as if you were hitting the end of life of your brake pads.

I assume, not having a AT Z, that it's just trying to do what many MT drivers do and force the car into 1st before coming to a complete stop. Do you know what mph it generally does this at?

Edit: I wouldn't worry too much about the shift to your PTO gear at low speeds. It's no worse than upshifting and getting on it. You're just putting the force of the vehicle changing lateral direction onto your transmission.

danelonson 04-22-2013 07:05 PM

Quote:

Originally Posted by CDepp (Post 2278885)
I assume, not having a AT Z, that it's just trying to do what many MT drivers do and force the car into 1st before coming to a complete stop. Do you know what mph it generally does this at?

Yes this could be true, the computer is probably forcing the tranny into 1st before coming to a complete stop. I would say that my car does this between 5-2 mph.

danelonson 04-22-2013 07:07 PM

Quote:

Originally Posted by CDepp (Post 2278885)
Edit: I wouldn't worry too much about the shift to your PTO gear at low speeds.

What does PTO mean?


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