how long do i have to drive like a grandma before its broken in?

i had my tranny replaced and a week later while driving like an ***, it blew again. just got a new one in. should i drive it 500 miles? and is it safe to plug in my UTEC or should i let it break in first?

is it safe that i have a 7100 rpm limit on my vq35?



edit: just for some background info on the whole situation...

-tuned utec
-raised rev to 7100
-drove the car hard for a week or so
-tranny died. pressing gas= same as neutral. rpms raise car doesnt move
-got tranny replaced brand new unit.
-a week later after driving some what hard tranny dies again same problem...
-just got a new transmission in... now what?

 

how much did it cost you bro? I got same problem......

 

beat on it. it should be just as reliable as if it was new. and should easily handle the abuse. why pay for a rebuild and not do a 6 spd swap?

also talk to the shop and find out what keeps failing.

 

No way I'm beating on it agaion that's what I did the first time and it broke on me in the middle of a busy street. I didn't get my transmission REBUILT jus replaced. And it was done at nissan. They had no idea how it happen. The only thing I can thnk of is prolly 1 the new tranny was defective or 2 my 7100 rev limit hurt it while still in break in stage? I have no idea... they even chnaged the auto computer ecu incase. Nissan said they would only replace my tranny 1 more time if anythng cuz they don't know what's wrong

 

I don't recall ever seeing a break in time for a transmission.

 

give it a 1000 miles just to be safe, transmissions have friction and textured surfaces on the clutches/syncros that need to grab and hold so driving harder then normal, and routinely beating on the trans will prematurely wear out the life of those parts.

 

I had mine replaced 1year ago. I took it easy for a while but now I am not sure if it's still at 100% anymore. Not doing anything really weird, no loud clunks or erratic shifting but it doesn't seem to be dropping down to a lower gear when I think it should be. Like from 3rd to 2nd when I floor it. Could just be me but I'm not sure. Had my Nissan tech check it out not too long ago, fluid was fine. I may get it changed soon anyway.

It can't hurt to be careful though. Don't you think they are taking in all the bad trannies they pull and getting them rebuilt and shipping them back to us? They don't toss em in the trash after they pull a bad one do they?

 

rebuilt trans is all new parts with a used housing, the housing is nothing but an aluminum case, even if they put back used parts they are checked to make sure they work and are at original factory specs

 

F nissan and their trannys.. thats all I can say...

Try to get the TCM reprogram.

 

Could be the 7100 rpm limit and shifting at that point. My tranny has 84K miles and still pretty strong with all my mods. I've even taken my car to the track and ran at least 10 times down the 1/4 mile.

Unless you're spinning the wheels with severe wheel hop I don't see how you could be killing your tranny with heavy driving. It's quite possible also there are no more "new" 5ATs. Even a rebuilt transmission could be using reman'd parts.

 

you can easily take nissan and replace it with any other manufacture

 

Huh ? Take it to Nissan to have it replace ? and pay out of my pockets stealership cost ?

 

you can easily replace Nissan with Toyota/Honda/BMW, they all have transmission problems, no one is perfect

 

umm yeah ok , I was a Nissan and BMW Tech before , Nissan always had a history of Weak Trannys, Lets take the GTR R35 for example.. Already failed tranny.

Bmw is not a common tranny issue, neither is toyota.

Ive seen 3rd gen Maximas up to 6th gens with failed trannys.. Motors run like a champ but trannys failed.

No one ask for perfection but Nissan doesnt honor **** , so dont give me I can replace a differnt company. Its a fact that Nissan make weak trannys and they never seem to have the right fourumla to fix this.

Also fact as Chern stated , Our Trannys share the same as a Volvo.

A Volvo for fcuksakes

 

Yeah but I think we have to admin, the Maxima's in particular has tranny issues.

 

well ive been driving around for a few days havent really floored it at all though. i put on like 150 miles already. im about to throw the UTEC back on at 200 miles or so.

 

Im a retired tech, spent most time with BMW like I said, it's all the same ****, your gonna blame Nissan and you yourself said you beat on the car from my time with Nissan, mostly 4th & early 5th Gens, customers who came in, and needed a new trans usually never had a fluid change and the car was obviously driven hard.

As a tech I can't say what I saw more or less of, obviously Nissan advertises performance and cars break more often when they offer more power, it's common sense cheap performance, those 2 words don't go together,

Good luck with your trans, as for my car I think it's going downhill and Im ready to trade

 

I have not rebuilt a trans in years but from when I did, I remember taking the car out and just going all out, it's almost all fluid driven.

Maybe Nissan did not make the best decision when it came to the company it picked to supply the trans but I thought a transmission was suppose to handle 2-3 times the power of a stock engine, as a fail safe to prevent part failure, people are not buying these cars cause they want to shell out for expensive repairs, this is not good.

 

I'd give it 3K miles but it's your call. The longer the better.

 

that's what she said


sorry, that's all I have to offer in this thread

 

Check other forums, a lot of companies have problems with (higher output engines), auto trans.
If you want performance, better to get a standard, (a good one, LOL).
I've heard of Nissan autos being weak since 4th gen (had one rebuilt with 237KM on it, never changed fluid, opps).
Was going to get Acura TL auto, but read too many posts on the autos puking.
Drive too much in traffic to get standard these days.
Don't remember a break in period after mine was rebuilt, but he did say, not to beat on it for a few thousand KM.
Lots of different opinions on this topic.
What ever works I guess.
Keep checking the forums, a lot of the guys into serious mods usually have standard trans though.

 

Don't make the same mistake again. Get a tranny cooler and trans-go for that thing.

 

Nissan does have issues with its transmissions...nothing new...I heard they are being sued by a group of new GTR owners whose transmissions failed while driving the car at the track using the launch control option. Nissan doesn't want to honor the new car warranty on those! My 2004 Maxima SL's tranny died after only 15K KMS that's about 10K miles! I had a lot of issues with that car and they swapped it for a 2005 SE 9 months later. I don't drive mine hard at all....never had to floor it even and yet my tranny on my 2005 started having issues at 96K Kms and was just replaced last month! Some of my mods: CAI, Custom Cat back without resonator, UR-UDP...so nothing drastic...planning on the ISO-Thermal spacer soon. My dealer sells Nissans and Infinitis under the same roof (two seperate showrooms) and wants me to lease a 2008 G37....I would have to sell my car privately and I checked the used car site for Montreal and there were hardly and Maxs for sale! None in the same shape as mine too. I have an extended warranty to three years 60K too!.

I wonder what the G's tranny is like...any news on this guys? BTW - I was told that Nissan does not replace trannys with rebuilts...they are brand spanking new....the cost to them to replace it under warranty is less than for a rebuilt to Nissan!

 

^^^ I will not lie to you when I tell you this was my first and last nissan.

After my tranny was replaced a friend of mine (who btw owns tranny parts wholesaler) said to get rid of the car cause it is only a matter of time before it fails again. I still have the car and 10K miles after the replacement sometimes I get a feeling that it's not doing what it is supposed to do.

 

FWIW most regular cars auto trannies arn't that great. yeah they'll probably last till 100k or a bit more but everything after that is luck imo. i will say the older trannies(3/4thgen) held up to abuse ALOT better.

thus why we should only buy 6mts.

 

Thats amazing cause I think 100k is what most BMW last until, my friend worked in a shop that did repair work when customers no longer had warranties and BMW's with 120k where lined up for new transmissions, amazing the money these cars are and they are good for 100k-150k before it's time to move on

 

Same thing my tranny guy told me after my rebuild, no breakin time!!!