If anyone can help me out, I would really appreciate it. I have a Greddy TT kit with an E01.

Background (Short Version):

I had my tranny replaced at a Nissan dealership.

Issue:

After I picked up the car, I can no longer control boost; I am over-boosting. Manual mode, automatic mode....it doesn't matter. I have no control boost whatsoever.

I really don't trust Nissan and they said they do not know what to do to fix the issue.

Are there some things that I can look at to diagnose and fix the issue? Somethings that I can do to at least get in the ballpark of the issue.

Help appreciated.

Matthew

 

Sorry, can't help you with the boost quesiton, but would like to know if Nissan replaced your tranny under warranty with the TT on the car?

 

You sure the E01 is still even picking up your boost?

i.e. sure they didn't disconnect it somehow?

 

How bad is the over boost? The waste gates are right next to the transmisson mount bolts. If the over boost is bad they probably disconnected the vac lines. The Nissan mechcanic was probably wondering what the pretty blue things were. Crawl under the car and look to see if the vac lines are connected to the waste gate nipples.
Gary

 

Yup...they have to remove the wastegates to remove the tranny. The vaccum lines on the wastegate would be my first suspect.

 

Check wastegate blue vacumm line. If it's plug in and still boosting erratic. Turn off the E-01 to see if that is the culprit.

 

Thanks for all the replies, they helped.

Yes they replaced my tranny under warranty.

The issue was for some reason the unhooked the vac lines to my E01.....when they plugged it back in they flip flopped them.

Took Z1 Motorsports in Atlanta 2 minutes to figure it out.

 

Congrats

 

wait a minute, they replaced ur tranny under warranty even thouhg u have the TT? How did u convince them to do so? Unless you somehow told them that the trannys have been coming out defective and they checked that the cause of the problem was not by the TT, I would love to hear how u convinced them.

 

dealers here in dallas replace trannys on FI'd cars.
reason...? well they said "the tranny has problems... adding power is not the culprit to so many failures..."

now, this ONLY applies to the grinding, etc. that is a known problem... if you walked in there with a TT car, and there was a hole in the side of the tranny... you would have to pay.

 

Some how I managed to talk to the service rep. a the nissan dealer. I believe he used to be a mechanic and now he is the head or chief of service. Well back to the point. he said he will keep my warranty on my car. He even made a document and signed got approval by head mechanic , so that i could keep my warranty.

Hope this helps

 

that sounds really good. I hope my tranny doesnt grind in the future.. i have 10K miles on my car and no problems yet but i have an older model 03. dont know if the fix on the tranny was done on my car.

 

I really didn't convience anyone, I said that my tranny needed to be replaced. At first they said it was my TT install, but I reminded them of the issues with the 03 tranny and asked for more detail as to why the thought fi would cause the issue....they weren't sure.

The key is not to get excited, and just state the facts....take emotion out of it (that will scare the sh*t out of people). Build a relationship with them (prior to your tt install) and keep them (service manager) involved in all your decision making processes....make them feel like they own your car. I talked with my service manager prior to TT install, so he was always informed on what I was doing.

Thats tranny number 3, and there may be a 4 as I am still getting some noise from the tranny. I have not decided yet if I am going to ask them to install another or not...I have it at Z1 Motorsports of Atlanta (great guys just like my dealer) right now, they will tell me which call I need to make. I already called my dealer and gave him the heads up.

I really hope they don't have to install another trans. My dealer is great, but they don't know crap about my tt, and I always need to take it to Z1 the day after so they can clean up the dealer's tranny install.

Nissan dealers get yelled at all day long, be nice to them (while staying firm) and they will be nice to you. -- Your mileage may vary.

 

Hey man, cool to know.

What dealer do you go to? IF you don't mind me asking?

I go to GPM nissan. Also, I've heard a lot about that Z1 motorspotrs, but i sure dont know were is located...

Maybe we could also meet somewhere i just got my car done yesterday at 5 am. yeah 5 am talk about wanting it to be done.

If you want to contact me just pm me and we can plan something

thanks bro,

 

Team nissan on Cobb Parkway.

http://300zx.com
Cool pm me if you want to get together.

 

Hey guys, I jsut found out that my tranny is kinda messed up. I goign tomorrow to the nissan dealer to see what's up, hopefulle, is not it. I think is just the throttle bearing is loose or gone. Ill keep you updated.

Yeah bro once I finished ill pm you and probably we could meet at barret pkwy I used to work @ town center mall.

 

I'm happy there is tranny replacement service available to me when I move to NC. I am actually in Charlotte right now at Starbucks...doing some house hunting.

 

Just need to be careful and have your car checked out for an hour after the tranny install. Z1 and I go through my car after tranny install, and discover issues.

 

Thanks man, i found out it is the input shaft bearing what is damaged. I getting the whole transimission replaced anyhow. hopefully, i asked the head mechanic a little about FI and he new the shisne pretty well, by the way he has a 300zx tt. he said he is going to work on it,so hopefully he wont screw.

 

About the tranny's mine is hard to shift its not to smooth shifting most of the time. Should i have it checked, i have a 03 Z with 10,500 mi. ? And iam seriously considering the Greddy TT.