My Tranny Was Acting a Bit Wierd Tonight...
I recently picked up an 07 g35x 5at sedan. I have the shudder issue between lots of gears. 1 and 2, 2 and 3 you name it. At first I thought that maybe I was coming off of the gas too much, and fooling the transmission....but I'm starting to think that this can't be normal.
I am going to contact them tomorrow. I also found this....
Not sure if this helps you. Did you ever have yours fixed?????
An update:
Went to the dealer, they said the couldn't feel the problem. Came back in, went for a drive myself with the service manager and I was able to reproduce the shudder on a road where I remember it always happening. The manager agreed that it wasn't normal and I suggested to him that a member here (treacherous) fixed the issue with an ECU reflash with newer software<--Thanks Treacherous!
So I gave the manager the TSB for the '07s for the "throttle sensitivity - ITB08-017a", seeing as it involved reflashing ECU to newer version software. This didn't apply to my 08 as I apparently 08s have a whole different revision of software. ie: no JK69_a,b,c,or d in the software version number). Those with 07s, just for your reference, the latest flash is 23710-JK69D to fix this issue.
So for those with the 08 as opposed to the 07, the latest flash version is # 23710-1NA8C. The old version I had was 23710-1NA8A.
So now for the driving experience...I felt no difference in respect to throttle response, shifting, etc. The car drove pretty much exactly as it did when I brought it in. I guess the 08's never had that touchy throttle in the first place. Driving home, I felt no shudder at 60 (VERY EXCITED). I decided to wait for the girl to come home and we went out for a nice long cruise, holding 40mph (60kmh) as much as possible...no shudder, even on the same road that would almost guarantee it to shudder.
Guys, I think I nailed it. It's been a great day, the dealer was great to deal with and the car drives smooth as it should. I'll chime back in a couple weeks to update if all's still good, but appears that the reflash fixed it.
Thanks again to Treacherous for the help, I don't think they believed it themselves that the ECU reflash would fix the problem.
I'm now a more happier G driver!
Went to the dealer, they said the couldn't feel the problem. Came back in, went for a drive myself with the service manager and I was able to reproduce the shudder on a road where I remember it always happening. The manager agreed that it wasn't normal and I suggested to him that a member here (treacherous) fixed the issue with an ECU reflash with newer software<--Thanks Treacherous!
So I gave the manager the TSB for the '07s for the "throttle sensitivity - ITB08-017a", seeing as it involved reflashing ECU to newer version software. This didn't apply to my 08 as I apparently 08s have a whole different revision of software. ie: no JK69_a,b,c,or d in the software version number). Those with 07s, just for your reference, the latest flash is 23710-JK69D to fix this issue.
So for those with the 08 as opposed to the 07, the latest flash version is # 23710-1NA8C. The old version I had was 23710-1NA8A.
So now for the driving experience...I felt no difference in respect to throttle response, shifting, etc. The car drove pretty much exactly as it did when I brought it in. I guess the 08's never had that touchy throttle in the first place. Driving home, I felt no shudder at 60 (VERY EXCITED). I decided to wait for the girl to come home and we went out for a nice long cruise, holding 40mph (60kmh) as much as possible...no shudder, even on the same road that would almost guarantee it to shudder.
Guys, I think I nailed it. It's been a great day, the dealer was great to deal with and the car drives smooth as it should. I'll chime back in a couple weeks to update if all's still good, but appears that the reflash fixed it.
Thanks again to Treacherous for the help, I don't think they believed it themselves that the ECU reflash would fix the problem.
I'm now a more happier G driver!
update. I called the dealer this morning. The service manager was not forthcoming about the issues with the "throttle sensitivity" however when I pressed him on it, he admitted that there is new software available by request only. He said its considered a performance issue, and not a safety or reliability issue so it was never recalled. I'm taking it in saturday to be reflashed with the updated software.
Nope lol my car has spent its whole life at sea level and in the span of a few hours went up to like 9k feet or whatever i was at haha
Joined: Mar 2009
Posts: 18,299
Likes: 1,488
From: By the sea, Tx
G35 sedan w/ too much money in mods

We also don't have a $1500 repair bill every 40K miles to replace the shi**y stock clutch.
^rofl owned.
I cant talk though. This summer my car is going for sale and then im finding a 6mt 2nd gen. i think its sad i have more fun driving my friends VWs than my car even though mine is faster in every aspect. The stick is just so much more fun..... i shoulda woulda coulda bought that 04 lol
I cant talk though. This summer my car is going for sale and then im finding a 6mt 2nd gen. i think its sad i have more fun driving my friends VWs than my car even though mine is faster in every aspect. The stick is just so much more fun..... i shoulda woulda coulda bought that 04 lol
It was an inside joke to janik, and that's why I went with an aftermarket clutch and flywheel.
^rofl owned.
I cant talk though. This summer my car is going for sale and then im finding a 6mt 2nd gen. i think its sad i have more fun driving my friends VWs than my car even though mine is faster in every aspect. The stick is just so much more fun..... i shoulda woulda coulda bought that 04 lol
I cant talk though. This summer my car is going for sale and then im finding a 6mt 2nd gen. i think its sad i have more fun driving my friends VWs than my car even though mine is faster in every aspect. The stick is just so much more fun..... i shoulda woulda coulda bought that 04 lol




