2011 7AT Tour 2nd to 3rd Shifting delay and 5K rpm Loss of Power!

jchammond · 04-01-2016, 09:59 PM

Didn't want to quote on the long list- first; the shift light on the Auto means nothing/ it is adjustable to Taylor your shifts- mine is set around 7800 & begins to flash around 7300 (usually 4-500 RPM's before the set point))reminder to shift before it hits rev limiter.
Also/ looked up your initial code:::and you may have a failed ecm.
80,000 on an 11' isn't bad, but hopefully someone serviced the Trans at least once.(just a drain & fill procedure)mine was as dark as coffee @50k....so I done it a few times - driving about 5 miles in-between each drain & fill, to ensure I flushed converter & cooler.
I drive mine very hard at times/ so ever since then ,,I perform a once drain & fill every 10k (around 3.5-4qts. On level ground,5+ if on ramps)
Hope your wife doesn't lose faith in it-most likely something simple.
I did see that it talked about the ground......I replaced my battery @50k for preventive maintenance on Jan 16' (car was built Nov.10) just over 5yrs old & noticed it cranked a bit weaker on very cold days.
Put the oem sized Red top Optima in it....works beautifully!
Also replaced my serpentine belt (Gates belt from Napa) old one was getting dry & showing signs of cracking.
You definitely got an electrical problem & the dealership should be able to repair it.
I will post a short video of how it should shift.

Sent from my iPhone using Tapatalk

Zyphron · 04-02-2016, 03:02 AM

Quote:

Originally Posted by jchammond

Didn't want to quote on the long list- first; the shift light on the Auto means nothing/ it is adjustable to Taylor your shifts- mine is set around 7800 & begins to flash around 7300 (usually 4-500 RPM's before the set point))reminder to shift before it hits rev limiter. did not know this, good to know.
Also/ looked up your initial code:::and you may have a failed ecm. GRRRREAT....... it's getting towed to the Nissan dealer tomorrow afternoon if the Service manager cant help me (im like 70 mi away) well it says Bad Ground too. wonder if that has something to do with the battery? id Doubt it'd Crank like it does though. but Ill check the ECU grounds.
80,000 on an 11' isn't bad, but hopefully someone serviced the Trans at least once.(just a drain & fill procedure)mine was as dark as coffee @50k....so I done it a few times - driving about 5 miles in-between each drain & fill, to ensure I flushed converter & cooler.
I drive mine very hard at times/ so ever since then ,,I perform a once drain & fill every 10k (around 3.5-4qts. On level ground,5+ if on ramps)
Hope your wife doesn't lose faith in it-most likely something simple. she Over reacts. but trying to do something Nice and it blows up in your face really sucks
I did see that it talked about the ground......I replaced my battery @50k for preventive maintenance on Jan 16' (car was built Nov.10) just over 5yrs old & noticed it cranked a bit weaker on very cold days.yeah, whats up with this 8 gauge Ground Strap. how Crappy is that? it feels Super weak and Flimsy. I might Grab some of my 4 gauge OFC Amp cable to use here and make a New ground strap,
Put the oem sized Red top Optima in it....works beautifully!
Also replaced my serpentine belt (Gates belt from Napa) old one was getting dry & showing signs of cracking.
You definitely got an electrical problem & the dealership should be able to repair it. I really hope so
I will post a short video of how it should shift.

Sent from my iPhone using Tapatalk

thanks for the Pointers and Suggestions

Orestp · 08-03-2023, 09:20 PM

My AT was shifting very slow - under hard acceleration - the revs would go up to 5 - 6K before it shifted down - and with a long delay. I cleaned the MAF sensors and it shifts much much quicker now.

04-01-2016, 09:59 PM	#1 (permalink)
jchammond A True Z Fanatic Join Date: Nov 2014 Location: South Carolina Age: 58 Posts: 15,204 Drives: 13’ 370Z TS 7A/T Rep Power: 2684395	Didn't want to quote on the long list- first; the shift light on the Auto means nothing/ it is adjustable to Taylor your shifts- mine is set around 7800 & begins to flash around 7300 (usually 4-500 RPM's before the set point))reminder to shift before it hits rev limiter. Also/ looked up your initial code:::and you may have a failed ecm. 80,000 on an 11' isn't bad, but hopefully someone serviced the Trans at least once.(just a drain & fill procedure)mine was as dark as coffee @50k....so I done it a few times - driving about 5 miles in-between each drain & fill, to ensure I flushed converter & cooler. I drive mine very hard at times/ so ever since then ,,I perform a once drain & fill every 10k (around 3.5-4qts. On level ground,5+ if on ramps) Hope your wife doesn't lose faith in it-most likely something simple. I did see that it talked about the ground......I replaced my battery @50k for preventive maintenance on Jan 16' (car was built Nov.10) just over 5yrs old & noticed it cranked a bit weaker on very cold days. Put the oem sized Red top Optima in it....works beautifully! Also replaced my serpentine belt (Gates belt from Napa) old one was getting dry & showing signs of cracking. You definitely got an electrical problem & the dealership should be able to repair it. I will post a short video of how it should shift. Sent from my iPhone using Tapatalk __________________ MazWorx built long block \| FI-TT-100 Stage 2.75 \| IPT built 7A/T http://www.the370z.com/members-370z-...s-musings.html

08-03-2023, 09:20 PM	#3 (permalink)
Orestp Base Member Join Date: Jul 2011 Location: Edmonton, Alberta Posts: 43 Drives: 2010 370Z Rep Power: 15	Shift delay fixed by cleaning MAF sensor My AT was shifting very slow - under hard acceleration - the revs would go up to 5 - 6K before it shifted down - and with a long delay. I cleaned the MAF sensors and it shifts much much quicker now. __________________ GTM Twin Supercharger / GTM Large Capacity Oil Pan / GTM Valve Body Upgrade / Setrab 34 row oil cooler <- Deleted, Replaced with Laminova water to oil oil cooler / MotorDyne ART pipes / Cusco RS LSD / Tuned by Specialty Z / 15mm Ichiba spacers front & rear

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