tranny doesn't shift outta 1st

[kpring]

Funny, that was the last thing I tried before I finally asked a Tranny guy that does towing for the PD I dispatch for about that nut. I was advised by him that there may indeed be a nut holding the bolt on inside the transmission and it would be better left untouched. Although he works mostly with domestic transmissions, he had seen that situation before. He said with the oil looking decent, there probably was another reason why the transmission won't shift out of first. He said check if there was a vehicle speed sensor. I looked today but didn't see one, and it looks like a normal speedometer cable going into the tranny. So I'm back to square one. I'll start trying some of the things in this thread taht have been suggested as well as taking off alot of the air cleaner/passageways crap tomorrow and look for other obvious broken electrical wires or vacumn lines, but if any of you out there have any suggestions as to something else to check, I'm all ears!

[nismo_pilot]

there was a problem like this over on b15 sentra, it ended up being a bad govenor, its a little plastic gear that sits on the output shaft of the tranny, it either creates pressure or gives a signal to the transmission control module, depending on what type of tranny it is, to change gears, almost positive youll need to replace it

[kpring]

Excellent tip. I'm in between snowstorms tomorrow, so that is where I'll check first. Any way of checking it to see if it is bad?

[kpring]

I'll tell ya, I took off everything blocking my view of the top of the tranny, and that tranny has nothing fancy coming off it. I only see wires going to the gear selector mechanism, maybe thats the park/neutral switch and reverse backup light wires?? The speedo has a regular old fashion cable going into it, I don't see any vehicle speed sensor or anything else that might be considered relevant to my problem. Where is the governor you talked about on the b15 sentra. There isn't really an output shaft, with the half shafts coming out the side of the tranny. The Speedo cable is in that vicinity but not much else unless it is on the bottom of the transmission case.

[nismo_pilot]

FSM has the revolution sensor on the back side furthest from the bellhousing right along the centerline, are you throwing a code at all?

[kpring]

Found something that you may be describing. Underneath the transmission mount that comes off the fender wall and right next to the neutral switch/reverse lamp switch that connects to the gear selector is some type of electrical sensor(?) that goes into the transmission housing. It is retained in place by a spring clip. Unfortunately I can't figure out how it comes out. The spring clip must keep it from falling inside the tranny because it does seem to easily push down into the tranny, but doesn't seem to want to pull out. I'm going to the foriegn parts store with a picture to see if they know what it is and does. Hopefully this is the problem. Here is a pic, it shows you where it is on the tranny.

[nismo_pilot]

not too sure but i dont think it should be moving around like that, how many wires does it have?

[kpring]

It only moves when I attempt to take it out. There is a spring clip(barely visible) that holds it securely in place - meaning that it holds it up not allowing it to drop into the tranny. It seems in order for me to remove it, I will have to take off the pan. I take it it may not be the revolution senor you had trouble with? I went to the foreign parts store, they really didn't know but suggested going to the Nissan dealership. Went there with the photo of it and they want the VIN # first so they know what transmission it is before going any further. I hope at they can at least tell me what it is and what it does. The check engine light never lit. There are three wires going into it and it terminates on a clip on the top of the tranny visible right above the white box I drew on the previous photo (see above the upper left hand corner of the while box). There is a red wire, a blue wire and a black wire I believe.(for some reason I can't get this photo below to come out any larger, I tried 800x600 pixels, 1000x750 pixels and full size/untouched and they all come out that small)

[nismo_pilot]

hmmmm, looked again and tried matching it up to your picture, it appears to be just above the cruise control cable (im assuming thats what it is) that runs across the picture just above the box, youre looking for a hole that is covered by a cap with a snap ring holding it in place

[nismo_pilot]

here:

[kpring]

The area you indicated with the red box is the area I should check for that part you had to change? I'll look for the cap and clip. I appreciate you bearing with me on this, suppose I could spend $20 and by a chiltons manual, but I'm kind of cheap! (and obviuosly once this thing is running again, its going back never to be driven by me again!)

[nismo_pilot]

if you need instant help and i dont respond fast enough, phatg20.net has free factory service manuals you can download for your car, i downloaded it to give you advice, and yes the red box SHOULD be where the cap with the clip over it is.....

[kpring]

The web site info is the best, I'll get right on it. The Nissan people did eventually find out what I found on the tranny, it is a solenoid control assembly. Might be something to do with it, but at $150 I'll want to make positively sure that is the problem I will be looking inthe area you have outlined for the part you described. Any wires coming off it or is it just the plastic gear. If it doesn't cost much I'll throw one in just to check it out. Do you remember a ball park figure on what it cost you? ($150 to steep just to throw something at this. I'm probably going to try and take it out to see if putting any juice to it will make it work. I did see something with wires when I dropped the pan and I think it shows it in my first photo I posted(inside the pan). This is the diagram Nissan gave for that solenoid.



As you can see I still haven't figured how to post larger pictures

[nismo_pilot]

on your car its a mechanical valve, it has a small gear on it about the size of the metal part of a lighter that is made out of plastic, thats what youll be inspecting....... the gear spins the govenor valve, and as it spins two weights attached to the top begin to expand outward via centrifugal force, itll be kind of obvious when you see it, you should need basic tools like a screwdriver and some pliers for the cap

[kpring]

That website is the bomb!! I now have the transmission part of the manual converted to pdf's and I'll now know where everytrhing is!! Sweet. Was it the Governor valve you replace or the Revolution Senor. From what you seem to be describing, it is the Governor Valve. Also, will the plastic gear look bad, something noticible telling me -yup this is whats wrong.