need some good advice on AT

sonic370 · 04-28-2012, 08:41 PM

iv'e got a AT trans with 40,000 no problems what so ever with it.
i know it's a sealed system and can only be serviced at the dealer.

depending on who you ask iv'e been told just leave it alone
if it ain't broke don't fix it.... it's a DD never tracked.....

any opinions i would be thankful.................

nepali · 04-28-2012, 08:45 PM

Quote:

Originally Posted by sonic370

iv'e got a AT trans with 40,000 no problems what so ever with it.
i know it's a sealed system and can only be serviced at the dealer.

depending on who you ask iv'e been told just leave it alone
if it ain't broke don't fix it.... it's a DD never tracked.....

any opinions i would be thankful.................

And, it looks like you asked this same question before: 7AT maintenance question

sonic370 · 04-28-2012, 09:30 PM

sorry to confuse you. I did post before my fault
did a search and found my answer.

harman.khinda · 04-29-2012, 01:55 PM

its aright we need more threads about the 7AT

NYBladeZ · 04-29-2012, 01:57 PM

My advice, if you know how to drive stick don't get the AT lol. Sorry that was too easy. You can always go to your local Nissan dealer and get it serviced or buy the fluids yourself and do it at home, just get a pump from your local autozone, I've tried to do most of my maintenance at home or with the help of a buddy.

LakeShow · 04-29-2012, 01:58 PM

Honestly you probably shouldn't touch it.

wstar · 04-29-2012, 02:32 PM

Quote:

You can always go to your local Nissan dealer and get it serviced or buy the fluids yourself and do it at home, just get a pump from your local autozone, I've tried to do most of my maintenance at home or with the help of a buddy.

You can't technically, reliably, refill the 7AT at home. The fill level is like most gearboxes/diffs: it's set by a fill hole level, you fill till the hole barely overflows. However, the Service Manual gives very explicit instructions that the fill level from that hole is only correct in a narrow range of transmission temperatures as monitored by the TCM, and unfortunately only the dealerships' Consult-III tool can see the temp numbers from the TCM.

In the real world, most likely it's pretty easy to get this close enough with an IR thermometer on the transmission's pan, but I haven't seen anyone with the right equipment or expertise confirm the correlation between pan temps and Consult-III temps, or confirm how precise the fill level really needs to be. GTM mentioned publishing some info about this once, but never heard back on it.

For the time being, it's better to have the dealership refill. It's not that expensive anyways. All things considered, I'll be swapping my fluid out every 20-30K miles just as an insurance policy. That's nothing compared to e.g. gas costs over the same timeframe, so it's just smart maintenance policy.

sonic370 · 04-29-2012, 02:43 PM

Quote:

Originally Posted by wstar

You can't technically, reliably, refill the 7AT at home. The fill level is like most gearboxes/diffs: it's set by a fill hole level, you fill till the hole barely overflows. However, the Service Manual gives very explicit instructions that the fill level from that hole is only correct in a narrow range of transmission temperatures as monitored by the TCM, and unfortunately only the dealerships' Consult-III tool can see the temp numbers from the TCM.

In the real world, most likely it's pretty easy to get this close enough with an IR thermometer on the transmission's pan, but I haven't seen anyone with the right equipment or expertise confirm the correlation between pan temps and Consult-III temps, or confirm how precise the fill level really needs to be. GTM mentioned publishing some info about this once, but never heard back on it.

For the time being, it's better to have the dealership refill. It's not that expensive anyways. All things considered, I'll be swapping my fluid out every 20-30K miles just as an insurance policy. That's nothing compared to e.g. gas costs over the same timeframe, so it's just smart maintenance policy.

Thank you for the sound advice. Looks like i'll schedule mine for a service call.
Since i plan on keeping her for another 24 months anyway.

UNKNOWN_370 · 04-30-2012, 11:47 AM

Quote:

Originally Posted by wstar

You can't technically, reliably, refill the 7AT at home. The fill level is like most gearboxes/diffs: it's set by a fill hole level, you fill till the hole barely overflows. However, the Service Manual gives very explicit instructions that the fill level from that hole is only correct in a narrow range of transmission temperatures as monitored by the TCM, and unfortunately only the dealerships' Consult-III tool can see the temp numbers from the TCM.

In the real world, most likely it's pretty easy to get this close enough with an IR thermometer on the transmission's pan, but I haven't seen anyone with the right equipment or expertise confirm the correlation between pan temps and Consult-III temps, or confirm how precise the fill level really needs to be. GTM mentioned publishing some info about this once, but never heard back on it.

For the time being, it's better to have the dealership refill. It's not that expensive anyways. All things considered, I'll be swapping my fluid out every 20-30K miles just as an insurance policy. That's nothing compared to e.g. gas costs over the same timeframe, so it's just smart maintenance policy.

Good shyt Wstar. Repped.

harman.khinda · 04-30-2012, 01:02 PM

whats the avg. price for a tranny flush?

04-28-2012, 08:41 PM	#1 (permalink)
sonic370 A True Z Fanatic Join Date: May 2010 Location: Orange Texas Posts: 1,574 Drives: 09 370Z Sports PGK Rep Power: 18	need some good advice on AT iv'e got a AT trans with 40,000 no problems what so ever with it. i know it's a sealed system and can only be serviced at the dealer. depending on who you ask iv'e been told just leave it alone if it ain't broke don't fix it.... it's a DD never tracked..... any opinions i would be thankful.................

04-29-2012, 01:57 PM	#5 (permalink)
NYBladeZ A True Z Fanatic Join Date: Apr 2009 Location: New York Posts: 2,158 Drives: Lotus Exige S Rep Power: 20	My advice, if you know how to drive stick don't get the AT lol. Sorry that was too easy. You can always go to your local Nissan dealer and get it serviced or buy the fluids yourself and do it at home, just get a pump from your local autozone, I've tried to do most of my maintenance at home or with the help of a buddy. __________________ 2009 Carbon Fiber/Red 370z aka Trish: Sports Package, Meisterschaft full catback, Fast Intentions Longtube Headers, Injen Long Tube Intakes, UpRev Tune: Sold 2008 Lotus Exige S Club Racer aka Bella, always leaves me smiling

04-29-2012, 01:58 PM	#6 (permalink)
LakeShow A True Z Fanatic Join Date: Dec 2010 Location: L.I., NY Posts: 5,307 Drives: Everything Rep Power: 25	Honestly you probably shouldn't touch it. __________________ \|2013 Audi S4\|Ibis White/Black\|S-Tronic P+\| \|2013 370z\|PearlWhite/Persimmon\|Touring/Sport/Nav\|F.I. CBE 18" CF\| \|Sold\|2011 370z\|Gun Metallic\|Touring/Sport/Nav\|

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04-28-2012, 09:30 PM	#3 (permalink)
sonic370 A True Z Fanatic Join Date: May 2010 Location: Orange Texas Posts: 1,574 Drives: 09 370Z Sports PGK Rep Power: 18	sorry to confuse you. I did post before my fault did a search and found my answer.

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harman.khinda Enthusiast Member Join Date: Feb 2012 Location: Red Bluff, CA Posts: 378 Drives: 10 Nissan 370 PG 7AT Rep Power: 6723	whats the avg. price for a tranny flush?