Stutter between 2nd and 3rd Gear - G35Driver - Infiniti G35 & G37 Forum Discussion

G35 Sedan V36 2007- 08 Discussion about the 2nd Generation G35 Sedan 2007 - 08

Stutter between 2nd and 3rd Gear

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Old 01-11-2019, 01:03 AM
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Stutter between 2nd and 3rd Gear

Hey guys,

I had my transmission rebuilt back in mid November. Ever since I got it back, I felt a stutter between 2nd and 3rd gear. This stutter will occur when the tranny is shifting to 3rd gear around 2500 RPM. Every other gear shifts perfectly fine. I did not feel this stutter before the transmission was rebuilt and it his annoying the hell out of me. I brought it back like 3 times to the shop that rebuilt it, and they say that the transmission is learning and Nissans are notorious for taking a long time to learn, and it is normal. I have my doubts about that. Everything was swapped out for new except the valve body, as they said it looked fine and I did not need a new one. I am at a lost as every time I bring it back, they say it's normal.

I did some searching and see that some people talked about a TCM reflash? Will something like that fix my issue? I am reluctant to bring it to the dealership as I will be charged $112 just for a diagnose, but will do if this sounds like something that can fix this. I have done a ECU reset many times and that did not fix my issue.
 
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Old 01-11-2019, 03:14 AM
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Do they say how long to drive it for?
 
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Old 01-11-2019, 01:09 PM
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Originally Posted by Silversleeper86 View Post
Do they say how long to drive it for?
No, they didnít just say to keep driving it and its still learning. I drove almost 2k miles since then.
 
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Old 01-11-2019, 01:10 PM
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They're full of crap, the transmission doesn't need to learn to operate properly on this vehicle. Sounds like they have a component malfunctioning in the valve body and are waiting for your parts warranty to wear out.

Ask for an itemized invoice and see if they even replaced the valve body, also find out EXACTLY what fluid they used and if it wasn't Matic-J or Matic-S then they need to drain the ENTIRE transmission (yes that means removing it to drain the torque converter) and fill it with the correct fluid because it might also be a friction issue with the clutches.
 
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Old 01-11-2019, 01:11 PM
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Oops just re-read that they kept the existing valve body. That's probably your issue.
 
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Old 01-11-2019, 02:46 PM
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My 2 cents, abuse it and see what happens! Stick it in manual mode and do a bunch of WOT 2-3 shifts, upshifting, downshifting, at a bunch of different RPMs. Basically try and aggravate the issue.

If it gets worse take it to the shop and demand they fix the problem.

If it doesn't, at least you know the tranny isn't going to give up on you, and you can drive it for awhile to see if the the ECU will in fact eventually learn.

EDIT: If you end up making them put in a new valve body, a transgo shift kit is a really good upgrade for the auto that really wakes it up.
 

Last edited by cswlightning; 01-11-2019 at 03:07 PM.
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Old 01-14-2019, 08:26 PM
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Hey guys, they agreed to lift it up and take a look at the valve body. I will update with what happens.
 
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