Hi, first post here, so go easy on me, lol.
A little about my rig,
I received a free 1991 pathfinder se 4×4 automatic with 350,000 km on it. The transmission was already broken, so i don't know the story of how it stopped shifting.
I checked the fluid and it was bad, so I flushed it with new atf. I found a wire that was sitting on the exhaust manifold burning, so i spliced the wire, fixed and cleaned the wiring harness up. I read a bit of the 1990 fsm as there is no 1991 fsm that i can find. So i did one of the troubleshooting tests and it came back with the revolution sensor being unplugged or damaged. And now i am trying to figure out where it is exactly. I've been looking at various diagrams and every one is different. Some say its on the side of the tranny, some say its on the side of the transfer case. Then some say its on the top of the transfer case, and some say its on the top of the tranny. I believe its either on the side of the tranny (that one doesn't have the 10mm bolt though, its a 19mm, never pulled it out yet), or on the top of the tranny. There is nothing on the transfer case that i can see that would resemble it. I can't see the top of the tranny to confirm that its there. Im just scratching my head here.
So now for the questions....
Could it be the 19mm nut sensor?
If its on the top of the tranny, how would i go about changing it? Drop the tranny? Or can i go through the floor of the cab near the shifter?
I would prefer to do it myself as money is tight. I have the necessary tools to do the job, maybe not the right place however, the gravel sucks to lay on, lol. Cardboard helps. If all else fails, I'll take it to a shop, just have to give it an honest effort.
Any help with this matter would be great.