Having some issues with my 7AT

Megan370z · 09-27-2012, 08:34 AM

Quote:

Originally Posted by falconfixer

2011 7AT with a little over 9K on the odometer. Only mods are F.I. cat back and 25row oil cooler so not concerned with either of them messing the transmission up.

Here's what is going on. Normal driving or "spirited" driving it's the same lately. Letting the car do the shifting, when upshifting it revs about 1500 higher for that split second and lurches into gear. Downshifting is a little more violent when going into gear. It'll rev high, almost like it's trying to do an SRM move and snap your neck forward. Hoping the damn thing will just seize up already cause I know the right answer is to go to the dealership but I have a bunch of jackholes for techs. I'd rather wait and have the car dragged in there with half a transmission then let them dig in their *** looking for a fix.

Just seeing if anyone out there that has blown their transmission already had similar problems.

I had my 7at replaced last year but it was mostly only slipping and then a leak started by the torque convertor seal.
it didnt really had any problem upshift&downshift
downshift might be harsh in the lower gear , and the worst if you try yourself to downshift to 1st gear ,, which is a very short gear and should just let the tranny do it on itself

if this isnt your problem ,,yeah going to the dealership and get a ride with a tech to explain better whats going on would be best..

phohman · 09-27-2012, 08:55 AM

Sounds like what would be called "A Flare Shift" This means a Clutch pack has excessive clearances, therfore it takes the extra half a second to finish the shift. It will get worse, you may be at the Dealership sooner than you think!

falconfixer · 09-27-2012, 09:09 AM

Thanks for the input. Figured this was going to require a visit to the dealership but really want to go in there with an obvious problem. I'll keep driving it till it breaks down and have it dragged in there.

danelonson · 09-27-2012, 04:19 PM

I also have the 7AT with a little over 3500 miles and to be honest I don't think my transmission is gonna last very long

. Ever since I purchased my car when i slow down at a stop sign or stop light, the transmission will shift from 2nd to 1st and the entire car will jerk like when you downshift a manual without syncro-rev matching. Also, sometimes in slow traffic when I accelerate the car slowly I will hear a "thump" sound coming from the transmission as it shifts from 2nd to 3rd (if i accelerate a little faster it won't do it).
I love my Z but just frustrated that I have to live with these "issues" that shouldn't be happening and don't want to take my car to the stealership. falconfixer have you ever felt any of these problems on your 7AT? Has anyone else with a 7AT felt this?

falconfixer · 09-28-2012, 09:58 AM

Quote:

Originally Posted by danelonson

I also have the 7AT with a little over 3500 miles and to be honest I don't think my transmission is gonna last very long

. Ever since I purchased my car when i slow down at a stop sign or stop light, the transmission will shift from 2nd to 1st and the entire car will jerk like when you downshift a manual without syncro-rev matching. Also, sometimes in slow traffic when I accelerate the car slowly I will hear a "thump" sound coming from the transmission as it shifts from 2nd to 3rd (if i accelerate a little faster it won't do it).
I love my Z but just frustrated that I have to live with these "issues" that shouldn't be happening and don't want to take my car to the stealership. falconfixer have you ever felt any of these problems on your 7AT? Has anyone else with a 7AT felt this?

Sounds exactly what is going on with mine. It didn't do this up until recently, last 1000 miles or so and is getting progessively more noticeable. Off the floor I was actually impressed how smooth the 7AT shifted but not so much any more.

IDZRVIT · 09-28-2012, 06:08 PM

Quote:

Originally Posted by falconfixer

Thanks for the input. Figured this was going to require a visit to the dealership but really want to go in there with an obvious problem. I'll keep driving it till it breaks down and have it dragged in there.

That's up to you. But why not take it in like someone said have a tech ride with you. If you know there is a problem, the tech will notice it also. If you don't trust your dealership then why take it to them? Go to another one.

09-27-2012, 08:55 AM	#2 (permalink)
phohman Base Member Join Date: Feb 2011 Location: Katy-Houston Tx. Age: 62 Posts: 124 Drives: 2012 370Z Nismo Rep Power: 15	Sounds like what would be called "A Flare Shift" This means a Clutch pack has excessive clearances, therfore it takes the extra half a second to finish the shift. It will get worse, you may be at the Dealership sooner than you think! __________________ INGEN CAI BERK HFC Z1 SS BRAKE LINES ICHIBA 15mm SPACERS 25 ROW OIL COOLER Z1 ENGINE UNDERSHROUD COVER Z1 AKEBONO ROTORS QUAIFE DIFF w NISMO DIFF COVER WHITELINE BUSHINGS

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09-27-2012, 09:09 AM	#3 (permalink)
falconfixer Track Member Join Date: Feb 2012 Location: 10aC Posts: 978 Drives: Taco Rep Power: 77	Thanks for the input. Figured this was going to require a visit to the dealership but really want to go in there with an obvious problem. I'll keep driving it till it breaks down and have it dragged in there.

09-27-2012, 04:19 PM	#4 (permalink)
danelonson Base Member Join Date: Apr 2012 Location: Florida Posts: 82 Drives: 12 370z 7AT Sport Rep Power: 13	I also have the 7AT with a little over 3500 miles and to be honest I don't think my transmission is gonna last very long . Ever since I purchased my car when i slow down at a stop sign or stop light, the transmission will shift from 2nd to 1st and the entire car will jerk like when you downshift a manual without syncro-rev matching. Also, sometimes in slow traffic when I accelerate the car slowly I will hear a "thump" sound coming from the transmission as it shifts from 2nd to 3rd (if i accelerate a little faster it won't do it). I love my Z but just frustrated that I have to live with these "issues" that shouldn't be happening and don't want to take my car to the stealership. falconfixer have you ever felt any of these problems on your 7AT? Has anyone else with a 7AT felt this?