Rough shifting 7AT

rico magic · 01-27-2010, 05:55 PM

Just a quick question for those that have the 7AT. When you are driving it cold does the transmission shift rough as well as shift up too soon or hunt for the gear it should be in? Mine seems to do it, I don't drive it hard when it's cold, I'm pretty easy on the gas pedal until it gets up to normal operating temperature. I'd like to find out if it is just me or is there more of this going on out there. Thanks!

antman22 · 02-03-2010, 03:50 PM

so far i haven't noticed much issue with the shift points. i've been driving in everything from 10 degree weather to 70 degree weather this winter. my car either sits in an underground parking garage or inside my attached garage however.

Trips · 02-04-2010, 02:39 AM

In D Mode without the paddles, it always going to the higher gear so if you happen to quickly give it gas it has a slight hesitation to downshift to accelerate, That's normal for the Transmission to do that. I just drive most of the time with the paddles and control the shifts myself.. I have not noticed any changes in cold weather temps Here in Cali it was recently 47 degrees, cool for some but cold for us..

rico magic · 02-04-2010, 05:13 PM

Thanks for the reply, it isn't too bad, it just seems to want to shift to a higher gear at a low RPM. Maybe for fuel economy, dunnoe, but it seems harsher and more prone to do it when it sits overnight and driven in the morning rather than when it has warmed up. Oh well, thanks again!

Chan Chee Hoe · 02-06-2010, 01:57 AM

Well,the 7 speed unit on our cars,is a 'bit' on the rough side due to it's sporting nature[lock up],compare to an Lexus or BMW unit.

rico magic · 02-07-2010, 09:40 AM

True, that is what I figured but I just wanted to make sure that it wasn't just me.

TBSS2008 · 02-07-2010, 10:12 AM

I drive with the Paddle shifters most of the time but I agree when driving in (D) at low speeds it can be jerky. I usually lightly roll into the throttle at lower speeds seems to help make the car shift smoother and keeps it from skip shifting into a gear you weren't expecting.

On a Side Note:
An unexpected result from my ERZ HFC install is throttle response is so good now that when in (D) the car has become a lot smoother at low speeds. The Auto has pretty aggressive short 1st - 3rd gears so when cruising around town at low speeds the car can be jerky. The added throttle response and torque has smoothed the lower gears out.

j.arnaldo · 02-07-2010, 10:19 AM

Has any of you guys heard anything 'bout Nissan throwing in the CVT??!! At my age, that would be a godsend! Greetings from too-warm Puerto Rico.

NXTAZEE · 02-07-2010, 11:49 AM

My 7AT shifts very smooth in D most of the time, but notice some lower speed shifts can sometimes be quite positive. In M it's really positive, especially 2 to 3 it's like a kick in the ***. I love it.

rico magic · 02-08-2010, 02:54 PM

Quote:

Originally Posted by TBSS2008

I drive with the Paddle shifters most of the time but I agree when driving in (D) at low speeds it can be jerky. I usually lightly roll into the throttle at lower speeds seems to help make the car shift smoother and keeps it from skip shifting into a gear you weren't expecting.

On a Side Note:
An unexpected result from my ERZ HFC install is throttle response is so good now that when in (D) the car has become a lot smoother at low speeds. The Auto has pretty aggressive short 1st - 3rd gears so when cruising around town at low speeds the car can be jerky. The added throttle response and torque has smoothed the lower gears out.

I agree, mine is the same way when in the lower gears and slow speeds. It usually is smoother once it has warmed up to normal operating temps.

meleazar · 07-08-2011, 02:30 AM

Actually noticed rough downshifting right out of the dealer's parking lot. Usually happens with the lower gears though...doesn't matter if it's cold or warmed up. It's definitely more prevalent when the tranny is switched to "Manual" mode. I think it's safe to say that it's just a characteristic of our cars.

01-27-2010, 05:55 PM	#1 (permalink)
rico magic Base Member Join Date: Aug 2009 Location: Jax, FL Posts: 131 Drives: '09 Nissan 370Z \| PW Rep Power: 16	Rough shifting 7AT Just a quick question for those that have the 7AT. When you are driving it cold does the transmission shift rough as well as shift up too soon or hunt for the gear it should be in? Mine seems to do it, I don't drive it hard when it's cold, I'm pretty easy on the gas pedal until it gets up to normal operating temperature. I'd like to find out if it is just me or is there more of this going on out there. Thanks! __________________ 2009 Pearl White 7AT : Sport \| Fairlady Z Deck Emblem \| Illuminated Kickplates \| Cargo Area Cover \| LED License Plate & Cargo Area Lights \| JDM Fog Light \| Black Fuel Gauge Overlay \| GT-R Start Button \|

02-04-2010, 02:39 AM	#3 (permalink)
Trips Administrator Join Date: May 2009 Location: Disneyland, Ca Posts: 8,732 Drives: 🔰 Rep Power: 10	In D Mode without the paddles, it always going to the higher gear so if you happen to quickly give it gas it has a slight hesitation to downshift to accelerate, That's normal for the Transmission to do that. I just drive most of the time with the paddles and control the shifts myself.. I have not noticed any changes in cold weather temps Here in Cali it was recently 47 degrees, cool for some but cold for us.. __________________

02-04-2010, 05:13 PM	#4 (permalink)
rico magic Base Member Join Date: Aug 2009 Location: Jax, FL Posts: 131 Drives: '09 Nissan 370Z \| PW Rep Power: 16	Thanks for the reply, it isn't too bad, it just seems to want to shift to a higher gear at a low RPM. Maybe for fuel economy, dunnoe, but it seems harsher and more prone to do it when it sits overnight and driven in the morning rather than when it has warmed up. Oh well, thanks again! __________________ 2009 Pearl White 7AT : Sport \| Fairlady Z Deck Emblem \| Illuminated Kickplates \| Cargo Area Cover \| LED License Plate & Cargo Area Lights \| JDM Fog Light \| Black Fuel Gauge Overlay \| GT-R Start Button \|

02-07-2010, 09:40 AM	#6 (permalink)
rico magic Base Member Join Date: Aug 2009 Location: Jax, FL Posts: 131 Drives: '09 Nissan 370Z \| PW Rep Power: 16	True, that is what I figured but I just wanted to make sure that it wasn't just me. __________________ 2009 Pearl White 7AT : Sport \| Fairlady Z Deck Emblem \| Illuminated Kickplates \| Cargo Area Cover \| LED License Plate & Cargo Area Lights \| JDM Fog Light \| Black Fuel Gauge Overlay \| GT-R Start Button \|

02-07-2010, 10:12 AM	#7 (permalink)
TBSS2008 Base Member Join Date: Apr 2009 Location: Texas Posts: 195 Drives: 11 Corvette GS 6spd Rep Power: 17	I drive with the Paddle shifters most of the time but I agree when driving in (D) at low speeds it can be jerky. I usually lightly roll into the throttle at lower speeds seems to help make the car shift smoother and keeps it from skip shifting into a gear you weren't expecting. On a Side Note: An unexpected result from my ERZ HFC install is throttle response is so good now that when in (D) the car has become a lot smoother at low speeds. The Auto has pretty aggressive short 1st - 3rd gears so when cruising around town at low speeds the car can be jerky. The added throttle response and torque has smoothed the lower gears out. __________________ 2011 Black Corvette Grand Sport 6spd \| NNP Daul Mode Exhaust 2008 Trail Blazer SS Black \| SuperChips Tune 2009 370Z Black 7AT Touring Sport (TRADED)

02-03-2010, 03:50 PM	#2 (permalink)
antman22 Track Member Join Date: Dec 2009 Location: Dallas TX Posts: 597 Drives: 09 PG 370z 7AT Rep Power: 17	so far i haven't noticed much issue with the shift points. i've been driving in everything from 10 degree weather to 70 degree weather this winter. my car either sits in an underground parking garage or inside my attached garage however.

02-06-2010, 01:57 AM	#5 (permalink)
Chan Chee Hoe Track Member Join Date: Mar 2009 Location: Singapore Posts: 861 Drives: 370z,Yellow,7sp A Rep Power: 18	Well,the 7 speed unit on our cars,is a 'bit' on the rough side due to it's sporting nature[lock up],compare to an Lexus or BMW unit.

02-07-2010, 10:19 AM	#8 (permalink)
j.arnaldo Banned Join Date: Oct 2009 Location: Puerto Rico Posts: 937 Drives: Nissan 350Z, 2004 Rep Power: 0	Has any of you guys heard anything 'bout Nissan throwing in the CVT??!! At my age, that would be a godsend! Greetings from too-warm Puerto Rico.

02-07-2010, 11:49 AM	#9 (permalink)
NXTAZEE Track Member Join Date: May 2009 Location: Vancouver Island Posts: 530 Drives: 2010 370Z 7AT Rep Power: 18	My 7AT shifts very smooth in D most of the time, but notice some lower speed shifts can sometimes be quite positive. In M it's really positive, especially 2 to 3 it's like a kick in the ***. I love it. __________________ 2010 Carbon Silver 370Z 7AT charcoal int. sports package \| Clear Bra \| Invidia Gemini CBE \| CF B-Pillars \| CF Fangs \| CF Z emblems \| Swift Springs \| 20mm & 25mm Spacers \| SPC Camber Arms \| Brushed Aluminum shift knob

07-08-2011, 02:30 AM	#11 (permalink)
meleazar Base Member Join Date: Nov 2010 Location: Buena Park Posts: 7 Drives: 09 Nissan 370Z AT Rep Power: 15	Actually noticed rough downshifting right out of the dealer's parking lot. Usually happens with the lower gears though...doesn't matter if it's cold or warmed up. It's definitely more prevalent when the tranny is switched to "Manual" mode. I think it's safe to say that it's just a characteristic of our cars.

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