tunedup

The "tranny trick" is a modification that involves the simple pulling of a wire harness that resides near the left strut. When you pull the connector, it takes out the line resistance that makes the shifts soft in an automatic transmission Maxima. I have heard both good things and bad things with this "trick" and use it very seldom.


I READ THIS ON A SITE ... I WAS CONFUSED AS TO WHAT THIS MEANT
WHAT DOES IT TO ??? what are the pros and cons of this ...

DA-MAX

iTrader: (10)

unplug and the car shifts EXTREMELY hard into gear, its quite uncomfortable, but might have some use at the track, but I think it could lead to damage if used continually(especially on a weak VG tranny like mine) since the VB is not "fully" recalibrated ala Lev 10, Don or Transgo.......

ZuMBLe

iTrader: (1)

I think it only works on the 3rd gens.

ZuM

jgadlage

iTrader: (1)

When you have that sensor plugged in your car shifts as it would normally. When you unplug it, your Maxima becomes all the more wicked in that it shifts like a beast from hell. The shifts are way more harsh than the VB would ever give you. What happens is when you disconnect that sensor you tranny is going from one scenario to another. It is going from a set amount of line pressure going to your tranny to make your car shift smooth and soft. When you disconnect the sensor you are telling your tranny to deliver full line pressure to your transmission to make every shift. What this does is make every shift extremely harsh, hard, and quick b/c of all the line pressure that is going to the tranny. Since it doesn't get a reading to use the preset line pressure, it goes all out and delivers everything that it's got. This really is bad for your car and if you want your AT to shift quicker and faster I would highly recommend that you get the VB modified and a put a tranny cooler put on your Maxima. We tried it with my 4th Gen and my brother's 3rd Gen and it gave the same results. This is one of those things that is good for that "one time deal before you get the VB modified" but I definatley wouldn't have this done for everyday driving.

ZuMBLe

iTrader: (1)

Oooh, so it does work for 4th gens? So, where is this plug. For future reference.. =)

ZuM

NmexMAX

iTrader: (22)

Rihgt behind the strut.........next to the firewall:+)

nodoubt711

could you please tell me exactly where that wire is? i dont know where the strut and firewall is, tell me in dummy terms, thanks. i have a 3rd gen max by the way

jgadlage

iTrader: (1)

Do you know where you airfilter is housed? That big black sort of rectangular looking box that is on the right side of your car (if you are looking in from the front of your car with the hood open)? If you look to the right or lower right you should be able to find it.

If you look behind your battery and your airfilter box you will see your drivers side fender. It is below where the Front Strut Tower Brace is connected (above red arrow). There should be a gunmetal gray male/female connector that is on the side of the drivers fender. Notice this is on the SIDE of the not the top or bottom. It would be in the shadow of the airfilter box on it's backside. I hope you understand what I am telling you.

[Edited by jgadlage on 02-09-2001 at 01:59 PM]

wicked1044

i was telling SINYMAXSE about this a couple weeks ago.
my nissan dealer told me about it. they said the car will shift hard as hell, but they didn't think it would make the car go faster or shift faster, just harder shifts.
its really easy to find with a c.a.i.

sinewave

Can you be more specific on the connector location? Is it mounted to the strut tower? On my '95, there are gray connectors mounted on the back of the tower and on the inboard side of the tower. There are also gray connectors mounted on the top of the tranny near the base of the tower. How many wires are on each end and what color are they. Can you point to it on this picture? I sure would like to try this on Sunday's autocross.

<img src="http://www.bmcno.org/misc/95gle_02-01_01.jpg">

jgadlage

iTrader: (1)

The switch locks into place with the male connector on the left side which goes into the female connector. Give it a try but don't leave your car like this. It is a surefireway to eat up your AT<br>
<IMG SRC="http://www.geocities.com/jgadlage/trannyswitch.jpg" ALIGN=left><br><br><br>

sinewave

Thanks for the quick reply. I'm going to try it out around the neighborhood before I race with it disconnected on Sunday.

sinewave

Well, I just got back from a test run with the tranny plug pulled. You guys weren't kidding, it is a VERY hard shift between 1st and 2nd. It is so firm that I'm not sure I am going to try it at the autocross tomorrow.

I'm going to have to do some investigation to find out exactly what that connects to. The device mounted on the strut tower appears to be a ballast resistor.

If it is, there may be a way to rig a dash-mounted variable resistor in it's place.

That would so cool to have a dial that you could change the shift firmness from the driver's seat!

The_quorum

Actually, at first I accidentally pulled a plug pertaining the the ABS system because that light came on the first time, but I got it right the second time. Took it on the highway, Definitely HARD shifts (especially between 1-2; I managed to chirp the tires w/ my slushbox). 30 miles later the MIL light came on...so I just plugged it back in. I'll see if the light turns off on it's own before I reset it.

MaxSterling

Thats EXACTLY what I was thinking!!!

costcowholesale

iTrader: (12)

anyone did any 1/4 or 0-60 run wiht the plug off?

nodoubt711

i am going to try it myself but i was just wondering does it hurt the tranny any?

jgadlage

iTrader: (1)

If you leave it undone for prolonged periods of time it will destroy your tranny.

nismomaxse97

iTrader: (4)

It should not really hurt the tranny too much. It might actually help it. A harder shift will allow less slippage between gears, therefore allowing less wear on the clutch pads.

Hey Don feel free to give us your expertise on this subject.

sinewave

While at the autocross today, I had an Electrical Engineer that I work with take a look at it. It definitely looks like a resistor to him also. We are going to see what the resistance is with a volt-ohmmeter tomorrow.

I need some help from anyone with a '95 factory service manual. I need to find out what that part is called and I need a scanned image of the wiring diagram showing that part and what it connects to in the tranny (or computer).

If we can get all of this info, we may be able to adjust the shift firmness from a **** on the dash. I would be willing to use my car for testing if I can find out exactly what it is that I am messing with.

If it controls fluid pressure in the tranny, I sure would be cautious. I don't want to have to take it out for blown seals (or worse).