5th gear "crunching" with shift

mazdaspeed3 · 02-16-2010, 04:37 PM

Don't know if this will help, but has anyone thought about changing out one or more of the motor mounts? I have a Mazdaspeed 3 and a lot of people complained about grinding until they changed to stiffer motor mounts. It made a huge difference for me at least. I imagine that quick shifting jostles the transmission quite a bit, and putting a stiffer anchor to the chassis could help.

Cameron

Solus · 02-17-2010, 10:51 AM

I am on my third transmission for this exact problem.. however this one has been running strong for all of 9k miles lol

Auston · 02-17-2010, 10:27 PM

Quote:

Originally Posted by Solus

I am on my third transmission for this exact problem.. however this one has been running strong for all of 9k miles lol

So you've successfully gotten your transmission replaced under warranty.
Any tips for getting Nissan to do this? My transmission is crunching in
5th gear about once a day for about 3 months now.

Josh@STILLEN · 02-17-2010, 10:34 PM

Keep going back.. make an appt.. take it back in. If they make the call to Nissan they will do a full transmission.

You've successfully replicated the problem, it's now escalating, end of story.

Solus · 02-18-2010, 06:05 AM

Yeah it was easy for me each time. I took it in they replicated it... called techline... put a new trans in..

Auston · 02-20-2010, 10:43 AM

Quote:

Originally Posted by Solus

Yeah it was easy for me each time. I took it in they replicated it... called techline... put a new trans in..

I just called and got an appointment for 8am Tuesday. The grind only
happens about once a day so I'm not optimistic they'll be able to
reproduce it that morning, according to Round Rock Nissan might have to
leave the car there for them to try multiple days..

6SPD_FTW · 04-01-2010, 05:29 PM

Read my post.

I had no issue. My main complaint was the i-Keys not working and just casually mentioned that 6th gear was grinding when shifting 5-6. I knew fully well that a new transmission was what was needed, but I have dealth with it for 12,000 miles now (17,000 on the car...problem started @ 5000mi) and probably wouldn't have raised any hell with them if they didn't want to do anything about it. But to my surprise, they kept the car for diagnosis and the next day called and said I had a new transmission on the way.

This new one is extremely quiet, whereas the original one had lots and lots of obnoxious gear noise and clunking from the start, and then the grinding started later. New one is quiet as a church mouse. The dealership I went to gave me no problems whatsoever about replacing it.

Late,
Trav

Auston · 02-23-2010, 10:48 PM

Service appointment was successful.

The technician first again shifted in the double
clutch like fashion, then I told him twice I shift
in one motion. As soon as he shifted in one
motion it reproduced. From what I can tell
he shifted strait from 2nd to 5th. I get the picture
he had seen the problem before and just wanted to
cut to the chase.

Also got the "rear hatch does not open after first
push of release button" issue reproduced.

I've got a new transmission and rear hatch parts
on order with Nissan.

StealthZ · 02-26-2010, 05:29 PM

had issue with my 2007 350z, same transmission. as stated, synchros are going, Nissan doesn't even bother with them, new transmission for you.

6SPD_FTW · 02-27-2010, 10:25 AM

Seems like I remember someone on the forum mentioning that the problem that was destroying the 6th gear (and apparently 5th gear) synchronizers was that we were inadvertently pressing down on the shifter when shifting into 6th. Doing that starts to engage the reverse gear mechanisms and somehow screws around with the 5th and 6th gear synchros.

Just sayin.....

Late,

Trav

Auston · 02-27-2010, 01:10 PM

Very interesting. Good point, be careful not to in the shifter

Auston · 03-13-2010, 05:26 PM

New transmission installed under warranty by Nissan Tuesday (also fixed issue with rear hatch not opening).

Owner satisfaction going Up

Supergoji · 03-15-2010, 09:58 AM

wtf... this **** never happened with the 300zx.

ya after 70,000 miles and 20 years of abuse the synchros are starting to go. but not when they were new.

but hell nissan made a new transmission for us! the 98 spec transmission.

this is ridiculous. this should not be happening.

E-Licious · 03-31-2010, 10:58 AM

My car does the same thing when shifting quickly to 6th. It only happens about once a week though so I doubt anyone would be able to reproduce it. I'll try to get it looked at at the same time I bring it in for hatch release not working properly, again...

JoeyD · 04-01-2010, 10:39 AM

I ground second twice yesterday, which has been happening more and more frequently in the last 5k miles. Now 4-5 grinds every time. Calling dealer.

04-01-2010, 10:39 AM	#15 (permalink)
JoeyD Enthusiast Member Join Date: Jan 2009 Location: Raeford, NC Posts: 305 Drives: 09 NISMO 370Z Rep Power: 187	I ground second twice yesterday, which has been happening more and more frequently in the last 5k miles. Now 4-5 grinds every time. Calling dealer. __________________ When was the last time you did 230MPH in something with 4 seats?

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02-16-2010, 04:37 PM	#1 (permalink)
mazdaspeed3 Base Member Join Date: Feb 2010 Location: the basement Posts: 22 Drives: 09 370z sprt+Trng Rep Power: 16	Don't know if this will help, but has anyone thought about changing out one or more of the motor mounts? I have a Mazdaspeed 3 and a lot of people complained about grinding until they changed to stiffer motor mounts. It made a huge difference for me at least. I imagine that quick shifting jostles the transmission quite a bit, and putting a stiffer anchor to the chassis could help. Cameron

02-17-2010, 10:51 AM	#2 (permalink)
Solus Enthusiast Member Join Date: Apr 2009 Location: Jacksonville, NC Posts: 453 Drives: 2009 Nissan 370z Rep Power: 16	I am on my third transmission for this exact problem.. however this one has been running strong for all of 9k miles lol

02-17-2010, 10:34 PM	#4 (permalink)
Josh@STILLEN The370Z.com Sponsor Join Date: Dec 2008 Location: Costa Mesa, CA Posts: 1,197 Drives: 2004 G35 Coupe 6MT Rep Power: 534	Keep going back.. make an appt.. take it back in. If they make the call to Nissan they will do a full transmission. You've successfully replicated the problem, it's now escalating, end of story.

02-18-2010, 06:05 AM	#5 (permalink)
Solus Enthusiast Member Join Date: Apr 2009 Location: Jacksonville, NC Posts: 453 Drives: 2009 Nissan 370z Rep Power: 16	Yeah it was easy for me each time. I took it in they replicated it... called techline... put a new trans in..

04-01-2010, 05:29 PM	#7 (permalink)
6SPD_FTW Base Member Join Date: May 2009 Location: Bristol, VA Posts: 59 Drives: 09 370Z Bl 6MT Rep Power: 16	Read my post. I had no issue. My main complaint was the i-Keys not working and just casually mentioned that 6th gear was grinding when shifting 5-6. I knew fully well that a new transmission was what was needed, but I have dealth with it for 12,000 miles now (17,000 on the car...problem started @ 5000mi) and probably wouldn't have raised any hell with them if they didn't want to do anything about it. But to my surprise, they kept the car for diagnosis and the next day called and said I had a new transmission on the way. This new one is extremely quiet, whereas the original one had lots and lots of obnoxious gear noise and clunking from the start, and then the grinding started later. New one is quiet as a church mouse. The dealership I went to gave me no problems whatsoever about replacing it. Late, Trav

02-23-2010, 10:48 PM	#8 (permalink)
Auston Track Member Join Date: Nov 2009 Location: Austin, TX Posts: 764 Drives: 2009 Z34 T+S RAE Rep Power: 17	Service appointment was successful. The technician first again shifted in the double clutch like fashion, then I told him twice I shift in one motion. As soon as he shifted in one motion it reproduced. From what I can tell he shifted strait from 2nd to 5th. I get the picture he had seen the problem before and just wanted to cut to the chase. Also got the "rear hatch does not open after first push of release button" issue reproduced. I've got a new transmission and rear hatch parts on order with Nissan.

02-26-2010, 05:29 PM	#9 (permalink)
StealthZ Enthusiast Member Join Date: Jun 2009 Location: Virginia Posts: 356 Drives: '14 GTR Premium Rep Power: 17	had issue with my 2007 350z, same transmission. as stated, synchros are going, Nissan doesn't even bother with them, new transmission for you.

02-27-2010, 10:25 AM	#10 (permalink)
6SPD_FTW Base Member Join Date: May 2009 Location: Bristol, VA Posts: 59 Drives: 09 370Z Bl 6MT Rep Power: 16	Seems like I remember someone on the forum mentioning that the problem that was destroying the 6th gear (and apparently 5th gear) synchronizers was that we were inadvertently pressing down on the shifter when shifting into 6th. Doing that starts to engage the reverse gear mechanisms and somehow screws around with the 5th and 6th gear synchros. Just sayin..... Late, Trav

02-27-2010, 01:10 PM	#11 (permalink)
Auston Track Member Join Date: Nov 2009 Location: Austin, TX Posts: 764 Drives: 2009 Z34 T+S RAE Rep Power: 17	Very interesting. Good point, be careful not to in the shifter

03-13-2010, 05:26 PM	#12 (permalink)
Auston Track Member Join Date: Nov 2009 Location: Austin, TX Posts: 764 Drives: 2009 Z34 T+S RAE Rep Power: 17	New transmission installed under warranty by Nissan Tuesday (also fixed issue with rear hatch not opening). Owner satisfaction going Up

03-15-2010, 09:58 AM	#13 (permalink)
Supergoji Enthusiast Member Join Date: Dec 2008 Location: Westchester NY Age: 36 Posts: 311 Drives: Z32tt / Supra tt Rep Power: 257	wtf... this **** never happened with the 300zx. ya after 70,000 miles and 20 years of abuse the synchros are starting to go. but not when they were new. but hell nissan made a new transmission for us! the 98 spec transmission. this is ridiculous. this should not be happening.

03-31-2010, 10:58 AM	#14 (permalink)
E-Licious Base Member Join Date: Sep 2009 Location: MN Posts: 38 Drives: 09 370z Rep Power: 16	My car does the same thing when shifting quickly to 6th. It only happens about once a week though so I doubt anyone would be able to reproduce it. I'll try to get it looked at at the same time I bring it in for hatch release not working properly, again...