weird 6th gear problem

6SPD_FTW · 07-12-2009, 04:34 PM

Quote:

Originally Posted by corbin09

So yesterday I took my car to the dealership for the biggest waste of a lunch break ever. I mentioned the oil overheating problem and he said it was normal in texas weather to have it around 260-280(uhhhhh dont think so). Then my main concern the transmission. He said that there was NO reason i should be driving the car that fast which to me is irrelevant to why it is broken but he said that since he or any of his employees cannot drive it that fast to diagnose the problem there was not much he could do for me. I am furious, my particular car has only 3k miles on it.

Just give it a little time. It didn't take long on mine to progress to the point that a normal shift into 6th gear @ 30mph produces a nice crunch. In all sincerity, I can rev 5th gear to ~1500rpm @ 30mph, then shift into 6th gear and it grinds. The higher the speed, the worse it grinds.

It MUST have something to do with the reverse lockout feature. My 2007 Altima 3.5SE w/ 6MT lasted just find through 40,000 miles of abuse. I shifted 2nd --> 6th all the time at 60mph and never had a problem. Of course R was beside of 1st and required you to lift the shift ring at the top of the shifter to get into R.

The transmission in the Z has triple cone synchros on 1st and 2nd, and double cone synchros on 3rd and 4th. 5th and 6th (and R) are the only single cone synchros...guess that's why they wear out so easily.

Late,
Trav

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