Transmission Slipping? 2009 370z

DarkJak · 11-29-2013, 02:51 AM

Just had a similar issue with my 7AT. The revs would jump up between the 5->6 shift if I'm on the gas. Seems to be an oil leak from my transmission cooler. I'm hoping that the shop that did the install is willing to fix it for free, and that there isn't any permanent damage to the transmission.

AZP Installs · 12-02-2013, 09:59 PM

Quote:

Originally Posted by DarkJak

Just had a similar issue with my 7AT. The revs would jump up between the 5->6 shift if I'm on the gas. Seems to be an oil leak from my transmission cooler. I'm hoping that the shop that did the install is willing to fix it for free, and that there isn't any permanent damage to the transmission.

Yeah as long as you don't drive it prolonged with slippage you should be fine once the shop fixes the leak and fills it back up.

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markthomas69 · 01-08-2014, 04:24 PM

The issue I have had with my 7AT is this:

I bought the car used with about 35~36k on the odometer and have no idea if the fluid had ever been changed and did not think to have it done (just did not know until joining this forum).

Anyhow, at about 44k on the clock I started having issues in the morning when cold that it would sort of hiccup when going from second gear to third and sometimes fourth. It would not do this in "M" mode however.

I had the flush done at 49k which does not seem to have corrected the issue, does anyone have any ideas what could be the cause for this?

NickTurnon · 01-08-2014, 04:41 PM

I get slippage often - Mostly in the morning. But it it doesn't seem to happen in manual mode. Mostly in "D"

Let me know if anyone has a fix or knows if trannys going bad?, etc.. Idk

warpeacelove · 01-08-2014, 07:06 PM

Quote:

Originally Posted by markthomas69

The issue I have had with my 7AT is this:

I bought the car used with about 35~36k on the odometer and have no idea if the fluid had ever been changed and did not think to have it done (just did not know until joining this forum).

Anyhow, at about 44k on the clock I started having issues in the morning when cold that it would sort of hiccup when going from second gear to third and sometimes fourth. It would not do this in "M" mode however.

I had the flush done at 49k which does not seem to have corrected the issue, does anyone have any ideas what could be the cause for this?

Flush is not going to help your transmission slippage. Either you repair the internals parts in the transmission (Clutch packages, etc..) from GTM or your purchase a new or used 7AT transmission.

markthomas69 · 01-08-2014, 09:39 PM

Then it sounds like a warranty claim.

pL4tiNumfi5t · 01-09-2014, 06:54 PM

Having similar slippage with mine, again only in D, usually after a cold start drive.
Seems similar to an issue on the Gs: ITB10-075

markthomas69 · 01-10-2014, 08:25 AM

Quote:

Originally Posted by pL4tiNumfi5t

Having similar slippage with mine, again only in D, usually after a cold start drive.
Seems similar to an issue on the Gs: ITB10-075

Nice find, that sounds exactly like what is going on.

wstar · 01-10-2014, 10:00 AM

It does seem odd that there's no corresponding 370Z TSB, given same model years and transmissions and it's just a reflash.

markthomas69 · 01-11-2014, 04:42 PM

Quote:

Originally Posted by wstar

It does seem odd that there's no corresponding 370Z TSB, given same model years and transmissions and it's just a reflash.

Agreed!

kittens · 01-13-2014, 09:42 PM

Question: I also saw on the service manual the tranny fluid is "maintenance free".

I do not notice any issues with transmission and is driving pretty smooth. Should I get a flush? I am doing my 30k service soon (33k miles). It seems like a lot of inspection and an oil/filter change. Maybe I should just have them look at it and change if needed?

wstar · 01-14-2014, 01:33 AM

Well, Nissan says it's good for life. If you plan to have them do all the service and you're not keeping the car past the warranty period, then it's all their problem and no point even thinking about it really. Personally, I think that fluid should be swapped at least every 20-30k-ish depending on conditions. It's not that expensive to swap it (in per-mile terms over those change intervals), and it's good insurance for long-term trans health.

NissanFan · 01-14-2014, 03:59 PM

if i had an AT, i would just leave it until you notice any changes to how it shifts.

11Thumper · 01-17-2014, 06:16 AM

I weighed my options and just decided to not change it and apply that $ towards the extended warranty. I won't keep the car past 100k so it's all good.

11-29-2013, 02:51 AM	#16 (permalink)
DarkJak A True Z Fanatic Join Date: Jun 2011 Location: Madison, WI Posts: 1,397 Drives: 2009 370Z Rep Power: 16804	Just had a similar issue with my 7AT. The revs would jump up between the 5->6 shift if I'm on the gas. Seems to be an oil leak from my transmission cooler. I'm hoping that the shop that did the install is willing to fix it for free, and that there isn't any permanent damage to the transmission. __________________ @stupidtoycars \| My track vids 09 7AT\|MCS 2WNR\|Topgunz Rotrex\|Ecutek (Eugene)\|Maxxis RC1\|Titan-7 TS-5\|OSG LSD\|Rear Mount Derale Oil Cooler (WIP)+25 Trans Cooler\|Fismo\|G-LOC R12/R10\|Zeta III L\|NLR Wing and Splitter\|CJM Pan and Fuel Hat\|Radium Surge Tank\|AP Racing CP9668

01-08-2014, 04:24 PM	#18 (permalink)
markthomas69 Base Member Join Date: Oct 2012 Location: Little Elm, TX Posts: 66 Drives: 2010 370Z Red, auto Rep Power: 13	The issue I have had with my 7AT is this: I bought the car used with about 35~36k on the odometer and have no idea if the fluid had ever been changed and did not think to have it done (just did not know until joining this forum). Anyhow, at about 44k on the clock I started having issues in the morning when cold that it would sort of hiccup when going from second gear to third and sometimes fourth. It would not do this in "M" mode however. I had the flush done at 49k which does not seem to have corrected the issue, does anyone have any ideas what could be the cause for this? __________________ Beluga catback exhaust and Y-Pipe. Sport brakes upgrade. 24 row oil cooler. Battery relocated to the trunk.

01-08-2014, 04:41 PM	#19 (permalink)
NickTurnon A True Z Fanatic Join Date: Jul 2011 Location: Scottsdale Age: 33 Posts: 1,636 Drives: 09 BS 7AT 370z Rep Power: 18	I get slippage often - Mostly in the morning. But it it doesn't seem to happen in manual mode. Mostly in "D" Let me know if anyone has a fix or knows if trannys going bad?, etc.. Idk __________________ 2009 Brilliant Silver BASE 7AT \| TEIN S-Tech Springs \| K&N Drop Ins & z1 Maf Tubes \| AAM S-Line Short Tails \| 5% Tint \| 20MM Spacers \| Sport Spoiler NickTurnon's 370z Build

01-08-2014, 09:39 PM	#21 (permalink)
markthomas69 Base Member Join Date: Oct 2012 Location: Little Elm, TX Posts: 66 Drives: 2010 370Z Red, auto Rep Power: 13	Then it sounds like a warranty claim. __________________ Beluga catback exhaust and Y-Pipe. Sport brakes upgrade. 24 row oil cooler. Battery relocated to the trunk. Last edited by markthomas69; 01-09-2014 at 09:35 AM.

01-09-2014, 06:54 PM	#22 (permalink)
pL4tiNumfi5t Base Member Join Date: Nov 2010 Location: 520, AZ Posts: 121 Drives: 2020 Tacoma TRD Pro Rep Power: 15	Having similar slippage with mine, again only in D, usually after a cold start drive. Seems similar to an issue on the Gs: ITB10-075 __________________ Tanabe Medalion Touring w/Y-Pipe \| Berk HFCs \| Mishimoto Air Intake Kit \| aFe Pro Dry S Drop-ins \| EcuTek \| Z1 34R Oil Cooler \| RS-R Ti2000 \| KONI Yellow \| SPL \| Goodridge Phantom \| Kics \| GTMat \| WedsSport SA-55M \| Bridgestone S-04 DIY: 7AT Aux Power Outlet Relocate

01-10-2014, 10:00 AM	#24 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3594	It does seem odd that there's no corresponding 370Z TSB, given same model years and transmissions and it's just a reflash. __________________ 7AT Track Car! Journal thread / Car setup details

01-13-2014, 09:42 PM	#26 (permalink)
kittens Enthusiast Member Join Date: May 2013 Location: Central NJ Posts: 412 Drives: 2009 Nissan 370Z Rep Power: 12	Question: I also saw on the service manual the tranny fluid is "maintenance free". I do not notice any issues with transmission and is driving pretty smooth. Should I get a flush? I am doing my 30k service soon (33k miles). It seems like a lot of inspection and an oil/filter change. Maybe I should just have them look at it and change if needed?

01-14-2014, 01:33 AM	#27 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3594	Well, Nissan says it's good for life. If you plan to have them do all the service and you're not keeping the car past the warranty period, then it's all their problem and no point even thinking about it really. Personally, I think that fluid should be swapped at least every 20-30k-ish depending on conditions. It's not that expensive to swap it (in per-mile terms over those change intervals), and it's good insurance for long-term trans health. __________________ 7AT Track Car! Journal thread / Car setup details

01-14-2014, 03:59 PM	#28 (permalink)
NissanFan Enthusiast Member Join Date: Jul 2013 Location: OG Land Posts: 435 Drives: off topic to the max Rep Power: 30	if i had an AT, i would just leave it until you notice any changes to how it shifts. __________________ All photoshopped. Oh wait, where's all my car picts?

01-17-2014, 06:16 AM	#29 (permalink)
11Thumper Track Member Join Date: Mar 2011 Location: Bay Area, CA Posts: 754 Drives: '11 370Z, '01 S2k Rep Power: 17	I weighed my options and just decided to not change it and apply that $ towards the extended warranty. I won't keep the car past 100k so it's all good.

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