Nissan 370Z Forum
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Nissan 370Z Forum (http://www.the370z.com/)
-   Engine & Drivetrain (http://www.the370z.com/engine-drivetrain/)
-   -   7AT Issue Help Guys! (http://www.the370z.com/engine-drivetrain/111110-7at-issue-help-guys.html)

JWillis72 02-10-2016 07:10 PM
7AT Issue Help Guys!
 
Ernie has your car been tuned? If so what software?

ItsErnie 02-10-2016 10:01 PM
Quote:
Originally Posted by JWillis72 (Post 3409866)
Your sure it's not just going to 4th?


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No, its in the middle of third because it does it in M-mode in the middle of third without me shifting.


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ItsErnie 02-10-2016 10:03 PM
Quote:
Originally Posted by StillenZ84 (Post 3409869)
You mentioned after a cold start you notice it. Does it always do that or just when its cold?

It does it everytime, just that as the car warms up more and more it becomes harder to notice and it doesnt do it as rough, my car actually jerks when this happens in the mornings after an overnight cold start though.


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ItsErnie 02-10-2016 10:04 PM
Quote:
Originally Posted by x2o (Post 3409901)
Okay so my car actually does this too, no idea what really causes it. My mechanic also says it is fine and it doesn't seem to be causing any harm. I just attributed it to a quirk in my gtm upgraded transmission or tune.

It happens most of the time in third gear, but if I switch to 4th gear before it happens in third, 4th will engage at a lower than expected rpm cause it drops during the switch. If that makes any sense, lol. Maybe I can grab a video of mine too.

I really only drive my 7at in M-mode so I've gotten familiar with this little problem. It only happens under light acceleration/city driving before my oil/trans is up to temp. When I'm really going for it the shifts are perfect.

Yeah sounds pretty accurate to what my issue is.


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ItsErnie 02-10-2016 10:04 PM
Quote:
Originally Posted by JWillis72 (Post 3409903)
Ernie has your car been tuned? If so what software?

My car is 100% stock.


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jchammond 02-11-2016 01:09 AM
Looks like you're just easing along & it up shifts & then converter locks up & then it notices a load & converter unlocks & locks back.... That slow of bumper to bumper driving & I use manual mode.https://vimeo.com/154954834
This is older video , when mine was bone stock; factory 3.359 open diff.


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ItsErnie 02-11-2016 09:55 AM
Quote:
Originally Posted by jchammond (Post 3410078)
Looks like you're just easing along & it up shifts & then converter locks up & then it notices a load & converter unlocks & locks back.... That slow of bumper to bumper driving & I use manual mode.https://vimeo.com/154954834
This is older video , when mine was bone stock; factory 3.359 open diff.


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Mine happens at slow speeds, accelerating hard and as long as I accelerate through 3rd gear it does it.


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