7-Speed Automatic and A/C

Eighties Meta · 08-14-2012, 08:41 PM

I have a 2009 370z that I bought used a few days ago and I have a question on something I've observed over the commute back and forth to work. It's been smoking hot so I've had the A/C on constantly and I obviously recognize that this will impact performance but it's not the performance or pushing it that worries me it's the fact that I find it rather difficult to drive just putting around on my daily commute with the A/C on. It's like I'm not pushing on the pedal hard enough and it's jumping up into the gears too quickly. Is this normal? it literally feels like I'm in 7th gear doing 40 mph. Obviously I can compensate by manually shifting down via the paddle if I need to be in a lower gear for a bit of time but just in general it's really bothersome being so "boggy" feeling. I hope this is just me not being familiar with driving it yet. Anyone experience this initially and change something about how they drive it?

Thanks
Kevin

UNKNOWN_370 · 08-14-2012, 08:49 PM

what has been the ambient temp and humidity in your area?

gr8-wrx · 08-14-2012, 08:51 PM

Sounds normal to me.

Trips · 08-14-2012, 08:53 PM

First of all are you referring to the 7AT?

If so you are correct and thats pretty normal with the 7AT

It seems like the trans is always on the highest gear possible

I normally drive in Manual/paddle mode 80% of the time and have gotten used to it.

UNKNOWN_370 · 08-14-2012, 09:04 PM

7th and 6th is boggy all the time, but extra hot weather makes it 3x worse. On stock intakes, throttle response is pure shyt in almost any gear in the summer and the high gears only make it worse. mod the intake to reduce the annoyance.

Montez · 08-14-2012, 09:08 PM

Pretty normal, my Z has been pretty doggish with this Texas heat and humidity of late. Suppose to be low 91 ish Sat and Sun, going to enjoy that!

Eighties Meta · 08-14-2012, 09:09 PM

Quote:

Originally Posted by UNKNOWN_370

what has been the ambient temp and humidity in your area?

on average around 91-92 with high humidity (90%). Been pretty damn hot. from a few of the responses seems rather normal so I won't stress over it.

Chan Chee Hoe · 08-15-2012, 06:49 AM

Perfectly normal,from a owner in S'pore[365 days a year that is very warm here]

Mt Tam I am · 08-15-2012, 09:34 AM

Question of 7AT owners:

Does this happen without A/C on?

Streetlife · 08-15-2012, 10:03 AM

Haven't had that problem here in Houston, it's been ridiculous here with the heat and humidity combined. Maybe, it's because mine is a 2012 and Nissan has made subtle changes, or my K&N air filters and Z1 Silicone MAF tubes. I do have every Silicone hose Z1 makes for the 370z installed too, except heater hose and brake booster silicone hoses. Took her out yesterday, as i only take her out 2 to 3 times a month because of the heat, she ran amazing as usual with the A/C on. That's including a few WOT's too.

murphman · 08-15-2012, 10:45 AM

What you are experiencing is normal, I rarely drive my 7AT out of manual mode because of this, you can be doing 30-40 and it will shift you into 6th or 7th. Shifts wayyy to early.

my2004Z · 08-15-2012, 02:23 PM

My understanding is that the transmission logic is adaptive. I'm not sure if that changes the required conditions to stay in gear or shift up. I drive mine in manual mode most of the time so I can control the power band.

Oh yeah! 7AT > 6MT even in the heat and humidity...

Bucketlist2012 · 08-15-2012, 04:01 PM

Back in the old days, you would be right...Modern Automatics in manual mode are excellent today...

You will never see an AMG automatic....You don't need to...They are amazing...

But manual trans are great, no doubt about it, but modern technology has made auto's way cooler than years ago...

Streetlife · 08-15-2012, 04:03 PM

Quote:

Originally Posted by Bucketlist2012

Back in the old days, you would be right...Modern Automatics in manual mode are excellent today...

You will never see an AMG automatic....You don't need to...They are amazing...

But manual trans are great, no doubt about it, but modern technology has made auto's way cooler than years ago...

Eighties Meta · 08-15-2012, 06:38 PM

well it's certainly good to know if we have a question we come home from work the following day and like magic your questions are answered. Appreciate it.

08-14-2012, 08:41 PM	#1 (permalink)
Eighties Meta Enthusiast Member Join Date: Aug 2012 Location: Pasadena, MD Age: 54 Posts: 344 Drives: 09 370z 7AT no-sport Rep Power: 12	7-Speed Automatic and A/C I have a 2009 370z that I bought used a few days ago and I have a question on something I've observed over the commute back and forth to work. It's been smoking hot so I've had the A/C on constantly and I obviously recognize that this will impact performance but it's not the performance or pushing it that worries me it's the fact that I find it rather difficult to drive just putting around on my daily commute with the A/C on. It's like I'm not pushing on the pedal hard enough and it's jumping up into the gears too quickly. Is this normal? it literally feels like I'm in 7th gear doing 40 mph. Obviously I can compensate by manually shifting down via the paddle if I need to be in a lower gear for a bit of time but just in general it's really bothersome being so "boggy" feeling. I hope this is just me not being familiar with driving it yet. Anyone experience this initially and change something about how they drive it? Thanks Kevin

08-14-2012, 08:51 PM	#3 (permalink)
gr8-wrx Track Member Join Date: Apr 2011 Location: Nor Cal Posts: 608 Drives: 10 370z Roadster 7AT Rep Power: 15	Sounds normal to me. __________________ Me: 2022 Toyota Tacoma SR5 Double-Cab SB Wifey: 2013 Toyota Highlander Limited AWD Weekends: 2010 Nissan 370z Roadster

08-15-2012, 09:34 AM	#9 (permalink)
Mt Tam I am A True Z Fanatic Join Date: Jun 2010 Location: California Posts: 10,709 Drives: 370Z T/S/N 6MT & XKE Rep Power: 3842	Question of 7AT owners: Does this happen without A/C on? __________________ "Does the carpet match the drapes? NO!!! I don't date bald women." Nissan Motorsports 34R Oil Cooler. Stillen CBE. Hotchkis Sport Sway Bars. KW Variant 3 Coilover System. Stillen Gen3 CAI. Michelin Pilot Super Sport. Stillen Brake Ducts. Carbotech™ XP10/XP8 Pads. Z1 Front Rotors. Z1 Stainless Brake Lines. Two degrees of camber

08-15-2012, 10:03 AM	#10 (permalink)
Streetlife Enthusiast Member Join Date: Aug 2009 Location: Texas Posts: 466 Drives: 2012 370z Mont/sport Rep Power: 15	Haven't had that problem here in Houston, it's been ridiculous here with the heat and humidity combined. Maybe, it's because mine is a 2012 and Nissan has made subtle changes, or my K&N air filters and Z1 Silicone MAF tubes. I do have every Silicone hose Z1 makes for the 370z installed too, except heater hose and brake booster silicone hoses. Took her out yesterday, as i only take her out 2 to 3 times a month because of the heat, she ran amazing as usual with the A/C on. That's including a few WOT's too. __________________ Tanabe Medalion Exhaust + Tanabe Y-Pipe, Baker Tuning, K&N Drop-Ins, Z1 Post MAF Tubes, GT-R Button, Nismo Magnetic Oil Drain Plug, CeramiKool Tint 35%, Solar Gard Clearshield Clearbra Last edited by Streetlife; 08-15-2012 at 10:06 AM.

08-15-2012, 10:45 AM	#11 (permalink)
murphman Track Member Join Date: Dec 2009 Location: houston Posts: 611 Drives: 370z Tour Black 7AT Rep Power: 16	What you are experiencing is normal, I rarely drive my 7AT out of manual mode because of this, you can be doing 30-40 and it will shift you into 6th or 7th. Shifts wayyy to early. __________________ Mod List: FI 18" CBE// Eibach Springs// Rear Camber kit// Ingen CAI//

08-14-2012, 08:49 PM	#2 (permalink)
UNKNOWN_370 A True Z Fanatic Join Date: Jul 2009 Location: ny'r livn in tx Posts: 8,687 Drives: well over 130m.p.h. Rep Power: 14857	what has been the ambient temp and humidity in your area?

08-14-2012, 08:53 PM	#4 (permalink)
Trips Administrator Join Date: May 2009 Location: Disneyland, Ca Posts: 8,728 Drives: 🔰 Rep Power: 10	First of all are you referring to the 7AT? If so you are correct and thats pretty normal with the 7AT It seems like the trans is always on the highest gear possible I normally drive in Manual/paddle mode 80% of the time and have gotten used to it.

08-14-2012, 09:04 PM	#5 (permalink)
UNKNOWN_370 A True Z Fanatic Join Date: Jul 2009 Location: ny'r livn in tx Posts: 8,687 Drives: well over 130m.p.h. Rep Power: 14857	7th and 6th is boggy all the time, but extra hot weather makes it 3x worse. On stock intakes, throttle response is pure shyt in almost any gear in the summer and the high gears only make it worse. mod the intake to reduce the annoyance.

08-14-2012, 09:08 PM	#6 (permalink)
Montez Track Member Join Date: Sep 2009 Location: Manhattan Beach, Ca Posts: 604 Drives: 16 LEX GS,09 Z,03Max Rep Power: 16	Pretty normal, my Z has been pretty doggish with this Texas heat and humidity of late. Suppose to be low 91 ish Sat and Sun, going to enjoy that!

08-15-2012, 06:49 AM	#8 (permalink)
Chan Chee Hoe Track Member Join Date: Mar 2009 Location: Singapore Posts: 861 Drives: 370z,Yellow,7sp A Rep Power: 17	Perfectly normal,from a owner in S'pore[365 days a year that is very warm here]

08-15-2012, 02:23 PM	#12 (permalink)
my2004Z Enthusiast Member Join Date: Apr 2009 Location: New Mexico, USA Posts: 285 Drives: 09' 370Z w/Sport 7AT Rep Power: 37	My understanding is that the transmission logic is adaptive. I'm not sure if that changes the required conditions to stay in gear or shift up. I drive mine in manual mode most of the time so I can control the power band. Oh yeah! 7AT > 6MT even in the heat and humidity...

08-15-2012, 04:01 PM	#13 (permalink)
Bucketlist2012 A True Z Fanatic Join Date: Feb 2012 Location: Northern California Posts: 1,424 Drives: 370Z Touring/Sport Rep Power: 16	Back in the old days, you would be right...Modern Automatics in manual mode are excellent today... You will never see an AMG automatic....You don't need to...They are amazing... But manual trans are great, no doubt about it, but modern technology has made auto's way cooler than years ago... __________________ 2009 Sport/Touring 370Z 1971 Z/28 with coil overs, rushforth's, willwoods, Hotchkis. 4 speed GMC Sierra1500 Last edited by Trips; 08-16-2012 at 06:37 PM.

08-15-2012, 06:38 PM	#15 (permalink)
Eighties Meta Enthusiast Member Join Date: Aug 2012 Location: Pasadena, MD Age: 54 Posts: 344 Drives: 09 370z 7AT no-sport Rep Power: 12	well it's certainly good to know if we have a question we come home from work the following day and like magic your questions are answered. Appreciate it.

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