7AT super slow shifts and throttle response

ZeN · 10-11-2016, 03:17 AM

I would check the switching value for both brake switch, you can do this with Nissan Datascan III and cheap ELM327 OBD2 bluetooth adapter on android phone. If both brake switch ok then check the timing when those thing happen.

Jhill · 10-11-2016, 11:53 AM

Two basic questions first before chasing things. Have you tried another 370z 7at to confirm yours is truly acting different? Also what has the service conditions for the trans been? I know they say lifetime fluid but that's usually just so the manufacture can advertise their low maintenance cost, if it's got some miles on it may consider flushing the atf, I think it was about 8 qts will get it really clean (2 drain and fills back to back).

T-Rex57 · 10-11-2016, 04:59 PM

Quote:

Originally Posted by Jhill

Two basic questions first before chasing things. Have you tried another 370z 7at to confirm yours is truly acting different? Also what has the service conditions for the trans been? I know they say lifetime fluid but that's usually just so the manufacture can advertise their low maintenance cost, if it's got some miles on it may consider flushing the atf, I think it was about 8 qts will get it really clean (2 drain and fills back to back).

Thanks Jhill, really great questions. I actually haven't tried another 7AT. I did come from a stock GM 4L60E auto car

before, and I swear it shifted quicker.

I also haven't done the trans flush, and neither has it been done with any of my services at Nissan. I will definitely look into that

T-Rex57 · 10-11-2016, 05:03 PM

Quote:

Originally Posted by ZeN

I would check the switching value for both brake switch, you can do this with Nissan Datascan III and cheap ELM327 OBD2 bluetooth adapter on android phone. If both brake switch ok then check the timing when those thing happen.

Thanks Zen, I will try what you suggest

T-Rex57 · 10-12-2016, 04:43 PM

Quote:

Originally Posted by ZeN

I would check the switching value for both brake switch, you can do this with Nissan Datascan III and cheap ELM327 OBD2 bluetooth adapter on android phone. If both brake switch ok then check the timing when those thing happen.

Hi ZeN, what constitutes the brake switches being OK? I did a quick run last night with the Datascan III app. Car seemed to be ok last night, that's rare though.

I've attached the DataScan CSV if anyone can tell me how to interpret it

NDSIII20161012_193456.csv.zip

ZeN · 10-14-2016, 06:40 AM

Theres 3 data PID that you can pull for brake switch. As long it switch from off to on or vice versa when you press or release the brake, ecu registererd it and that was not the reason your throttle were limited. You did said above that sometimes you had to wait up to 6 sec before it scream.

For the transmission, it could be valvebody going out.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Throttle response ?	pearlwhite1	Nismo 370Z	12	11-26-2013 12:10 PM
Throttle Response: DE/HR vs VHR	DIGItonium	Engine & Drivetrain	41	05-20-2012 07:11 PM
370Z FI Throttle Response: Boost vs. Throttle Position	DIGItonium	Forced Induction	9	01-23-2011 08:49 PM
Slow shipping slow response slow everything	thispecialk	Nissan 370Z General Discussions	15	11-01-2010 08:23 PM
Agonizingly Slow Response Times	ZKindaGuy	Announcements	17	01-13-2010 09:15 PM

10-11-2016, 03:17 AM	#1 (permalink)
ZeN Base Member Join Date: Apr 2011 Location: Malaysia Posts: 116 Drives: 09 PW 7AT 370z Rep Power: 16	I would check the switching value for both brake switch, you can do this with Nissan Datascan III and cheap ELM327 OBD2 bluetooth adapter on android phone. If both brake switch ok then check the timing when those thing happen.

10-11-2016, 11:53 AM	#2 (permalink)
Jhill Track Member Join Date: Mar 2016 Location: San jose Posts: 855 Drives: 2013 370z sport Rep Power: 3386	Two basic questions first before chasing things. Have you tried another 370z 7at to confirm yours is truly acting different? Also what has the service conditions for the trans been? I know they say lifetime fluid but that's usually just so the manufacture can advertise their low maintenance cost, if it's got some miles on it may consider flushing the atf, I think it was about 8 qts will get it really clean (2 drain and fills back to back).

10-14-2016, 06:40 AM	#6 (permalink)
ZeN Base Member Join Date: Apr 2011 Location: Malaysia Posts: 116 Drives: 09 PW 7AT 370z Rep Power: 16	Theres 3 data PID that you can pull for brake switch. As long it switch from off to on or vice versa when you press or release the brake, ecu registererd it and that was not the reason your throttle were limited. You did said above that sometimes you had to wait up to 6 sec before it scream. For the transmission, it could be valvebody going out.