Rpm jump when shifting (7at)

louiey370z · 07-20-2015, 03:43 AM

so every time I would shift from 3-4 gear it would up shift. It happens more than it does not. 1-2 is fine and 4-5 happens very rarely. Is it an issue with my shifting or is it the car? Usually upshifts about 500rpm and makes it sound really ugly

GZ3 · 07-20-2015, 08:44 AM

can you explain a little better?

louiey370z · 07-20-2015, 01:56 PM

Quote:

Originally Posted by GZ3

can you explain a little better?

What part are u not understanding so I can explain better?

Xerodx · 07-20-2015, 02:19 PM

So like when you shift from 3rd to 4th, the rpms jump?

FPenvy · 07-20-2015, 02:37 PM

mine does it when going 4th to 5th sometimes. little 200rpm blip up or so.

louiey370z · 07-20-2015, 02:55 PM

Quote:

Originally Posted by Xerodx

So like when you shift from 3rd to 4th, the rpms jump?

Yes then it will go into 4th. Makes the shift sound really bad and ugly

GZ3 · 07-20-2015, 09:41 PM

Almost like it revs twice and catches gear on the second?

louiey370z · 07-20-2015, 10:01 PM

Quote:

Originally Posted by GZ3

Almost like it revs twice and catches gear on the second?

Yeah it'll like shift up 500rpm and it'll make a sound like its revving but it sounds really bad

GZ3 · 07-20-2015, 10:18 PM

Quote:

Originally Posted by louiey370z

Yeah it'll like shift up 500rpm and it'll make a sound like its revving but it sounds really bad

Hmmm sounds similar to my problem minus the sounding terrible part. Im currently awaiting a new transmission from nissan

KN21283 · 07-20-2015, 10:25 PM

My guess is the flex plate. Do you have any rattles when you go from P to D?

FPenvy · 07-20-2015, 11:23 PM

My revs have jumped from time to time on 4th-5th shifts since I bought my car but no angry sounds or issues. Just a baby throttle blip most likely tcm glitch

louiey370z · 07-21-2015, 12:38 AM

Quote:

Originally Posted by FPenvy

My revs have jumped from time to time on 4th-5th shifts since I bought my car but no angry sounds or issues. Just a baby throttle blip most likely tcm glitch

It's like a little lag sound. It doesn't sound like a bad "clank", but more of a horrible rev and then it like makes the car slower then speeds back up. It's super hard to explain, so I was hoping I wasn't alone.

Btw, no issue from P to D

FPenvy · 07-21-2015, 07:27 AM

Quote:

Originally Posted by louiey370z

It's like a little lag sound. It doesn't sound like a bad "clank", but more of a horrible rev and then it like makes the car slower then speeds back up. It's super hard to explain, so I was hoping I wasn't alone.

Btw, no issue from P to D

mine just has a throttle blip of about 200-300rpm here and there when hard shifting into 5th. doesn't slow down or anything like that if anything it's just a very slight delay in the next gear grabbing maybe.

GZ3 · 07-21-2015, 09:29 AM

id get it checked out JIC, doesnt hurt. My issue was more pronounced and very repeatable.

07-20-2015, 03:43 AM	#1 (permalink)
louiey370z Track Member Join Date: Mar 2015 Location: AZ Posts: 515 Drives: '11 Nissan 370z Rep Power: 16	Rpm jump when shifting (7at) so every time I would shift from 3-4 gear it would up shift. It happens more than it does not. 1-2 is fine and 4-5 happens very rarely. Is it an issue with my shifting or is it the car? Usually upshifts about 500rpm and makes it sound really ugly

07-20-2015, 08:44 AM	#2 (permalink)
GZ3 A True Z Fanatic Join Date: Dec 2009 Location: SATX Posts: 3,296 Drives: Z Rep Power: 21	can you explain a little better? __________________ 09 GT-R 12' 370Z 7AT HANDED DOWN 12'+13' 5.0 SOLD

07-20-2015, 09:41 PM	#7 (permalink)
GZ3 A True Z Fanatic Join Date: Dec 2009 Location: SATX Posts: 3,296 Drives: Z Rep Power: 21	Almost like it revs twice and catches gear on the second? __________________ 09 GT-R 12' 370Z 7AT HANDED DOWN 12'+13' 5.0 SOLD

07-21-2015, 09:29 AM	#14 (permalink)
GZ3 A True Z Fanatic Join Date: Dec 2009 Location: SATX Posts: 3,296 Drives: Z Rep Power: 21	id get it checked out JIC, doesnt hurt. My issue was more pronounced and very repeatable. __________________ 09 GT-R 12' 370Z 7AT HANDED DOWN 12'+13' 5.0 SOLD

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07-20-2015, 02:19 PM	#4 (permalink)
Xerodx Base Member Join Date: Apr 2014 Location: Chandler, Arizona Posts: 35 Drives: 2012 370z Nismo Rep Power: 11	So like when you shift from 3rd to 4th, the rpms jump?

07-20-2015, 10:25 PM	#10 (permalink)
KN21283 Enthusiast Member Join Date: Dec 2011 Location: Nyc Posts: 312 Drives: Pw Rep Power: 13	My guess is the flex plate. Do you have any rattles when you go from P to D?