3rd gear safety mode??

[SUBZERO]

How is everybody doing? It's been a good while since ive been here, and for some wierd reason my password wont work and my screenname with all my info and # of posts are completely erased, it'sas if i have never been a nico member before and this is my firsttime visiting the website, which is very far from being true, illworry about that later!

For those of you that remember i was having a concern about my 93 q45having absolutely no take off power at all!!When i was cruising at about 55 mph the tach was running around3 grand, which is way too high in my opinion.

A couple of you stated that it sounds like it is in 3rd gear fail safe mode.If that is the case, what are some reasons it would be in fail safe mode,and how do i get it out of this mode?

How do i know for certain that this is my problem? Remember, this is arebuilt transmission with about maybe only 100 miles on it now, ihavent even broke it in yet. Im afraid to drive it like this very long!!

Could it be as simple as a dirty connector or something??

Anybody who has some ideas or thoughts on the matter, i wouldgreatly appreciate your input and help.

THANKS, CHRIS

[maxnix]

Improper electronic connections. Is your TCU good and connected properly? What does running the FSM AT test tell you?

[MinisterofDOOM]

Is this your "old" profile?:zer...53184There's another one with the same name without spaces that has zero posts...maybe you just forgot it had the spaces?

If the password still doesn't work, let me know and we'll get a new one sent to your email address.

I ended up solving my 3rd gear safe mode problem by replacing my TCU.To narrow it down to that for sure, I took the car to an Infiniti dealer WHILE it was misbehaving (not sure if yours is intermittent like mine was). They connected their Consult and ran through basic diagnostics. The diagnostic showed that the ECU was NOT receiving it's check signal from the TCU.

My car also showed "AT MALFUNCTION" in the trip odometer/diagnostic window at times, but not all times.

But the easiest way to rule out the TCU would be to plug a consult in (takes all of 5 minutes, shouldn't even need an appointment) or try using a known good one in the car and see if anything changes.

[SUBZERO]

Yes my friend, that is my profile. I dont know what i did wrong, i justgot a laptop, soi plugged it in and started using it and when i tried loggingon to my favorite site in the world, it kept saying i was putting inthe wrong info etc, etc. Thanks for the help, so how do i get thisstraightened out since i have started another profile?

Probably a stupid question but my computer skills are still in thelearning process,so thanks for your help,greatly appreciated!!,also thanks for the insight on the transmission info.

I love ALASKA but it sucks not having a infiniti dealership anywherein the whole damn state, so the consult check is out of the question for me.how much is the consult, and how hard are they to get?

thanks for your help!!! subzerocarfanatic

[MinisterofDOOM]

Assuming the email you used to sign up (the one shown in the profile) is still valid, we can just reset your password and send it to that address. You should be able to log in with the new password, and then you can change the password back to whatever you want.

[Q45tech]

Every Nissian dealer has a [usually 2-3] Consult II which cost $5500.

[elwesso]

are you not getting a TRANSMISSION MALFUNCTION code on the trip display? many times it will not stay on, but come on right when the car is turned on.

Thanks Chris (MoD) for getting his p/w reset..

[SUBZERO]

Wes, thanks for replying. I dont get the transmission malfunctioncode, i know what your talking about though.When i first got my car when the key was turned on that transmission codeused to come on, that was when the old transmission was still in it.

Since i have put in the new transmission the code has not appearednot 1 time. Some of you say maybe a incorrect connection, i assumeyou guys are referring to the transmissionharness that plugs in atrear of transmission with multiple plug ins.

Wouldnt there be a code or message in the info windowif that was the case? I dont thihk they are plugged in wrongbecause they are all different sizes i think.

[maxnix]

Or connections at the transmission.

[elwesso]

i would still run the self diagnosis. Ive had trans codes come show up before when i dont recall the TRANSMISSION MALFUCTION indication coming on the trip thing.

Do the self diagnosis and report back. Theres a handful of things it could be, self diagnosis is the obvious start.

[maxnix]

i would still run the self diagnosis.

Do the self diagnosis and report back. Theres a handful of things it could be, self diagnosis is the obvious start.

Very important you do this if you want help over the internet!

[SUBZERO]

my email has been changed to a different one for about a year or more nowI thought it was noted in my profile, but for some reason it doesntseem to have been changed in my profile.

Anyway here is my new email address minister. thanks, subzero

email address= [email protected]

[SUBZERO]

thanks for the help guys! now i just have to read and figure out how to do the self diagnosis test, cant be that hard.

thanks, subzero

[maxnix]

Just edit your profile through the CP.

[SUBZERO]

Thanks Bryan, i dont care what nobody says about you, yourallwright!! Very helpful person.

[goody90q45]

thanks for the help guys! now i just have to read and figure out how to do the self diagnosis test, cant be that hard....

It's on page AT-43 and AT-44 of your 90-93 FSM and is the same sequence for all G50's in case you're using the NICO 94-95 electronic version. Very easy to do but be patient for the codes to display as it might take 30-45 seconds.

http://www.nicoclub.com/FSM/Q45/1994_Q45/

[SUBZERO]

I did the self diag. test, or i should say i attempted to. It gave methe A/T CHECK as soon as started the first steps of test.

I ran car until it warmed up as suggested, turned it off and thenmoved selector to D posistion, then turned trip reset buttoncounter clockwise and held it, then turned ignition on whileholding reset button.

It then asks if diagnostis information display tells you tochange to A/T diagnosis mode, mine did not displaythat it said A/T CHECK .

It tells on page A/T 32 what to do if diag. judgement wasA/T check.What do i do since mine said A/T check at the very start of test!!

thanks, subzerocarfanatic

[MinisterofDOOM]

It gave methe A/T CHECK as soon as started the first steps of test.

What do i do since mine said A/T check at the very start of test!!

That is exactly what happened with my car as well.

It means one of the following:Kickdown switch, 1 position switch, inhibitor switch, or throttle position sensor are badOR the diagnostic system isn't working rightOR the TCU is bad

[SUBZERO]

so how do you determine which one it is my friend?i assume you can test each one of the items listed, providingyou know where they are located on the car, with a meter.Other than that i guess you have to take it to a dealerand have a consult hooked up for definite results,does this sound about right??

When the book speaks of all these ways to test each induvidualpart for correct functioning, i assume when they say control unitthey are referring to the A/T CONTROL UNIT, or do they mean theENGINE CONTROL UNIT?? The A/T CU is behind drivers side kickpanel correct? And ECU is behind kick panel on passenger side,am i correct on this assumption??

One last question, how the hell do i get my old screen name and profileback, i tried putting in my new password under SUB ZERO CAR FANATIC formy new password and it kept saying incorrect password or use name?

please help. thanks, chris

[goody90q45]

......It then asks if diagnostic information display tells you to change to A/T diagnosis mode, mine did not display that it said A/T CHECK...........It tells on page A/T 32 what to do if diag. judgement wasA/T check. What do i do since mine said A/T check at the very start of test!

Patience Grasshopper. You were there. When it displayed AT CHECK it had changed to diagnostic mode and the test had started. Now you have to wait 30-45 seconds, or longer, for the display to give you the codes. Watch for the bar on the left to flash every 10-15 seconds while it goes through the paces. The first time you run the test you should at least get a code D for low battery charge.

[maxnix]

Thanks Bryan, i dont care what nobody says about you, your all right!! Very helpful person.

Thank you. I try to be, but some want more fluff than direct truth. For me, life's too short for worrying about the color of lipstick on a pig.

Good luck with your diagnosis. It has to be an electrical connection or a component, or both.

[MinisterofDOOM]

Yes as noted, it takes a while for the "real" results to come up (but "AT CHECK" is one of the possible results).

While the diagnostic is "working" you should see a flashing "cursor" on the left side of the display. It'll flash for a bit, THEN it'll show the results.

TCU is in the driver kick panel. ECU is passenger side.

I'll look into what happened with your new password. Sorry it's been such a pain in the butt.

[SUBZERO]

Thanks for the efforts, and i appreciate your help on the password.The main thing that sucks about it not working is i cant post onclassified section and there are some parts im interested infrom other nico members. thanks for any help you can give

[SUBZERO]

it did say, low battery, and stop lamp inoperative or something like that,but there was no code, just a description of whats wrong.i did the self diagnosis on the diagnostic screen itself to seeif it was working properly as FSM suggested. by turning trip reset clockwise and holding it there then turning on ignition,it did the sequence of different lines like it should thendisplayed the square light on left of display screenand showed stoplightand then low battery charge .it was working properly according to test results.

So i assume either TCU or one of the other items listed, who knows!!im not giving up!!!! thanks guys, chris

[SUBZERO]

the bar did flash grasshopper!, and it said stoplight inoperable orsomething like that and low battery, but it never showed asingle number or letter code. thanks my friend!!

[elwesso]

it did say, low battery, and stop lamp inoperative or something like that,but there was no code, just a description of whats wrong.i did the self diagnosis on the diagnostic screen itself to seeif it was working properly as FSM suggested. by turning trip reset clockwise and holding it there then turning on ignition,it did the sequence of different lines like it should thendisplayed the square light on left of display screenand showed stoplightand then low battery charge .it was working properly according to test results.

So i assume either TCU or one of the other items listed, who knows!!im not giving up!!!! thanks guys, chris

You turned it the wrong way, it should say AT CHECK. Follow the article in the HOW TO section..

[goody90q45]

the bar did flash grasshopper!, and it said stoplight inoperable or something like that and low battery, but it never showed asingle number or letter code....

If it dispays anything but AT CHECK at the beginning of the test you're doing something wrong. This is the diagnostic mode that the FSM asks yes/no before you proceed with the test.

I've done the test many times on 6 Q45's and the diagnostics all work the same with the same initial readout. One thing the FSM doesn't say is that once it displays AT CHECK you can let go of the trip reset button and continue with the test. If you were holding this button throughout the test it may explain the faulty readout.

Also, if you run a successful test twice in a row without driving the car the second test may come back all clear as the codes are erased after the test is run. Example- The first time you test you should get code D (Battery Low) since you just installed the transmission. On the second run of the test that code will have gone away.