Sticky: 370Z Transmission Failures (6MT)

UNISYN

I don't think that's what is causing it. I don't know if this was a good elimination test, but I turned off my rev-matching feature temporarily and found it did not help. From what I have read in the past, the synchro for 1st and 2nd gear is weaker than the other synchros. However, I did have to have my CSC replaced last year at a whopping $750 (it would of cost even more at the dealership). However, my synchros were working fine then. I just hope these replacements last.

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2009 Black M/T 370Z w/ Sport Package
Power Utilities Designer
Keyboard Music Producer ("UNISYN")

Nixin

That is absolutely crazy. Nissan knows that they/we are having widespread issues with this transmission and the components and nothing has been done by them to do a recall or a TSB so that we are not paying through the nose once warranty is up. F*ckers!

UNISYN

Well, after the Nissan Dealer waited for the extended warranty company ("The Mechanic") to send an inspector to find out why my car was making a whining noise after the transmission was replaced, the replacement of my rear differential was approved. I was initially told that the driveshaft bearing could be causing it, but apparently it was the rear differential. So I will have a new transmission AND a new differential in the car at the end of the week. Fortunately the warranty company is paying for nearly two weeks of Nissan's rental vehicle, which is a Nissan Rouge. I cannot wait to get the vehicle back. It's a 2009 with less than 75K miles, so I am very happy that I will have a new powertrain to extend the life of the vehicle.

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2009 Black M/T 370Z w/ Sport Package
Power Utilities Designer
Keyboard Music Producer ("UNISYN")

Wilson2608

Mine wont engage from 1st to 2nd at high rpm sometimes. It's a hit or miss really. 6th gear always grinds unless I baby it into gear.

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Stillen G3, z1 Intake Manifold, Stillen Headers, Z1 HFC's, Stillen Catback. 330whp 267 ft- lbs tuned at Z1 motorsports.

UNISYN

It definitely sounds like the synchros are going out. I don't know if a fluid change would help that. I would check to see if it's covered by warranty because I can only imagine it getting worse.

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2009 Black M/T 370Z w/ Sport Package
Power Utilities Designer
Keyboard Music Producer ("UNISYN")

ZOperaMan

Watching this and the other thread:
Built Manual Transmission

Has anyone out there found a good source for rebuilt manual transmissions with sketchy syncros? Preferably Houston area...

--ZOM

Fountainhead

Hey Unisyn
I'm in your area, Lake Mary, who (if you don't mind me asking) did your CSC work?
Mine is fine but I'd like to know my options.

Thanks!

UNISYN

Hey there, Fountainhead. I actually had it done at the Formula Tire & Auto (Firestone) on 434 near Wekiva Springs Lane back in 2015 when I was new to the area and it was only 3/4 mile from where I live. They did a good job, but it's pricey, meaning around $700. This last August I had the entire engine swapped with all new gaskets, water pump, spark plugs etc. and a Z1 Street Performance clutch put in at Z-Tech on 17-92 in Longwood ($5300! ouch). I would probably go to Z-Tech since he has been working on Z' since the early '80s, but they cost a little more due to quality of work. I'm happy with everything so far, but a couple of times it felt like the CSC was going out again, but it cleared up. I also had the transmission and rear differential replaced at the Nissan dealer a couple years ago right before the extended warranty ran out. That would of been a $6K job!

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2009 Black M/T 370Z w/ Sport Package
Power Utilities Designer
Keyboard Music Producer ("UNISYN")