7at sluggish or slipping in manual mode

soxfan69 · 08-09-2014, 03:27 PM

I drive in manual mode 99% of the time,but lately when it gets warmed up, the shift acts like it a slipping when goin from third to fourth gear. Here's some more info. I live in Fl and right now it's 97* with 97% humidity. It's hot damnit! Has anyone else had this problem. Would a tranny flush and swap with a quality fluid help? And what about a trans cooler? I don't track the car and don't plan to. I have 24k miles on it with an FI exhaust and post maf tubes as far as mods go. Thanks for any input

DEpointfive0 · 08-09-2014, 03:30 PM

You are more than welcome to change the fluid, maybe you've heated/degraded the fluid more than most because you drive the car in manual mode...?
Trans cooler is always recommended

soxfan69 · 08-09-2014, 03:55 PM

Any suggestions on fluid and translators cooler. Thanks again

Fountainhead · 08-09-2014, 05:08 PM

From what I've read changing the AT fluid involves the Nissan software suite and a laptop running it and to get ALL the old fluid out takes quite a number of gallons, due to the torque convertor holding quite a bit and not draining when the pan is removed. There is no filler gauge or way to tell if you're at the right amount when refilling.

DEpointfive0 · 08-09-2014, 05:13 PM

Quote:

Originally Posted by soxfan69

Any suggestions on fluid and translators cooler. Thanks again

You MUST use OEM fluid

For cooler, not sure, all of them should work just fine, but you should still pass the fluid through the radiator to bring the fluid up to temp

DEpointfive0 · 08-09-2014, 05:15 PM

Quote:

Originally Posted by Fountainhead

From what I've read changing the AT fluid involves the Nissan software suite and a laptop running it and to get ALL the old fluid out takes quite a number of gallons, due to the torque convertor holding quite a bit and not draining when the pan is removed. There is no filler gauge or way to tell if you're at the right amount when refilling.

Only need consult 3 for the trans temp:
DYI: AT Fluid Change Steps

I'd just let out as much as you can, and refill the bitch

soxfan69 · 08-09-2014, 05:36 PM

Quote:

Originally Posted by soxfan69

Any suggestions on fluid and translators cooler. Thanks again

Damn spell check... Anyways, thanks for the input. Looks like I got a new project to keep me busy

EZT · 08-10-2014, 09:22 PM

I took mine to the dealer after my stillen transmission cooler install and had them drain and refill it. Cost about 189$, fairly cheap to make sure it was done right. Peace of mind.

Limeybastard · 08-11-2014, 12:04 AM

Quote:

Originally Posted by EZT

I took mine to the dealer after my stillen transmission cooler install and had them drain and refill it. Cost about 189$, fairly cheap to make sure it was done right. Peace of mind.

I dont want to sound sceptical, but how do you really know that they drained and filled it?

I say this as my cousin used to be a mech, they are timed on their work. Most of the time they check and top off and state they drained and filled.

soxfan69 · 08-11-2014, 12:31 AM

Quote:

Originally Posted by EZT

I took mine to the dealer after my stillen transmission cooler install and had them drain and refill it. Cost about 189$, fairly cheap to make sure it was done right. Peace of mind.

Did u get the stillen cause u were having the same problems, or do u track the z. Reason is.. can I get away with a universal like mushimoto for a third of the cost.

andy_meng1024 · 08-11-2014, 04:30 AM

I have 25 row trans cooler and it works wonder. OEM trans temp is way too hot even under normal driving here in Taiwan, not to mention on track the trans would lock up within 2 laps. With my 25 row I can go for 20 min session no problem.

critical · 08-11-2014, 04:44 AM

need a tranny cooler.

EZT · 08-14-2014, 10:19 AM

Quote:

Originally Posted by Limeybastard

I dont want to sound sceptical, but how do you really know that they drained and filled it?

I say this as my cousin used to be a mech, they are timed on their work. Most of the time they check and top off and state they drained and filled.

Well I physically watched them drain it and go through the motions of refilling it. Took like a hour+ to do.

Quote:

Originally Posted by soxfan69

Did u get the stillen cause u were having the same problems, or do u track the z. Reason is.. can I get away with a universal like mushimoto for a third of the cost.

I got the stillen because I intend on further upgrading the Z, so I wanted the added transmission cooling.

08-09-2014, 03:27 PM	#1 (permalink)
soxfan69 Base Member Join Date: Jan 2014 Location: jax florida Posts: 122 Drives: 2012 370z gunmetal Rep Power: 11	7at sluggish or slipping in manual mode I drive in manual mode 99% of the time,but lately when it gets warmed up, the shift acts like it a slipping when goin from third to fourth gear. Here's some more info. I live in Fl and right now it's 97* with 97% humidity. It's hot damnit! Has anyone else had this problem. Would a tranny flush and swap with a quality fluid help? And what about a trans cooler? I don't track the car and don't plan to. I have 24k miles on it with an FI exhaust and post maf tubes as far as mods go. Thanks for any input

08-09-2014, 03:30 PM	#2 (permalink)
DEpointfive0 Premium Member Bitches Join Date: Jan 2012 Location: SoCal Posts: 14,824 Drives: a lot Rep Power: 17151	You are more than welcome to change the fluid, maybe you've heated/degraded the fluid more than most because you drive the car in manual mode...? Trans cooler is always recommended __________________ Do YOU want to know what/where I got my username from? ( Click to show/hide ) NSFW due to language:

08-11-2014, 04:30 AM	#11 (permalink)
andy_meng1024 Premium Member Join Date: Nov 2009 Location: Taipei Posts: 233 Drives: 2012 370z Rep Power: 3382	I have 25 row trans cooler and it works wonder. OEM trans temp is way too hot even under normal driving here in Taiwan, not to mention on track the trans would lock up within 2 laps. With my 25 row I can go for 20 min session no problem. __________________ Current: 2015 C200 / 2018 Cayenne / 2012 370z / 2012 C250 Coupe Gone: 2013 Cayenne / 2004 Cayenne S / 2003 SL55 AMG / 2008 C300 / 2006 350z / 2006 C280 4Matic

08-11-2014, 04:44 AM	#12 (permalink)
critical A True Z Fanatic Join Date: Oct 2012 Location: Washington Posts: 1,252 Drives: 09' 370z 7AT Rep Power: 16	need a tranny cooler. __________________ Quaife w/ gears \|Stillen Gen 3\|SOLD FI Resonated Test Pipes \|SOLD FI 18'' \| 25row Stillen Race \| Progress 35mm/25mm sways \| Swifts/Koni\|Volk G25's\| Stoptech SS lines\|\|SPL Front/Rear Arms\|

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08-09-2014, 03:55 PM	#3 (permalink)
soxfan69 Base Member Join Date: Jan 2014 Location: jax florida Posts: 122 Drives: 2012 370z gunmetal Rep Power: 11	Any suggestions on fluid and translators cooler. Thanks again

08-09-2014, 05:08 PM	#4 (permalink)
Fountainhead Track Member Join Date: Feb 2013 Location: FL Posts: 834 Drives: 2019 Civic Type R Rep Power: 14	From what I've read changing the AT fluid involves the Nissan software suite and a laptop running it and to get ALL the old fluid out takes quite a number of gallons, due to the torque convertor holding quite a bit and not draining when the pan is removed. There is no filler gauge or way to tell if you're at the right amount when refilling.

08-10-2014, 09:22 PM	#8 (permalink)
EZT Track Member Join Date: Mar 2011 Location: Gainesville Posts: 546 Drives: 09 370z Rep Power: 315	I took mine to the dealer after my stillen transmission cooler install and had them drain and refill it. Cost about 189$, fairly cheap to make sure it was done right. Peace of mind.