Tell or show me instructions step by step on how to remove and install transmisson

If you have to ask, this is not a job for a new do-it-yourselfer, especially if you don't have access to a hoist. There are pages and pages of instructions in the manufacturer's service manual. Get a copy of that and read through those steps and the line drawings to see if you really want to attempt this. There will also be a listing of any special tools that are required, and torque specs for some of the fasteners.

You can also go to the top of this page and point to "Repair and Service", then click on "Manuals" to buy an online subscription for your exact car model.

You can try doing a Google search for this topic, but I suspect there isn't anything out there. Sometimes your Public Library will have Chilton manuals, but those usually omit big jobs like this. You can find them at many auto parts stores too.

For me, nothing beats a paper copy of the manufacturer's service manual. Everything is easy to find and you can put bookmarks in it. You'll find a lot of these on eBay.

There's also AllData online service manuals that we use a lot, but they aren't free. Cost is around $27.00 for a year for just your one model, and about $48.00 for five years. If you can't find anything else, I can put together a set of instructions from AllData, but the problem is they typically give you a few steps, then they send you off to another link for an article on how to do one of the steps, then you have to find your way back again. There's a lot of line drawings too. I can convert them into a format that can be uploaded, but it will take some time.

You also will have to be specific as to the year, model, and engine size so I get the right instructions. It would be good if you would start a new question. That makes it easier to track when others are researching a similar problem. Unlike on other sites where anyone can chime in to confuse the issue, this was a private conversation between just two people. As such, none of the other experts get notified when a reply is posted, so none of them will have a chance to help you. That limits how much help you might get. If you do want to start a new question, here's the link:

https://www.2carpros.com/questions/new

My mistake. You added to a transmission replacement question, so I assumed that is what you wanted to do. I did find your new question. I'm not going to post an answer for that one because we have others here who are much more qualified for Nissans and will do a better job for you. If I post a reply, that question will go off the list, then the others won't get to see it or have a chance to reply.

In the meantime, I'm looking for a video that will help with your spark plugs. If I find something, I'll post the link here, then you'll get another e-mail directing you back here.

Be aware all the spark plugs aren't going to fail at the same time, so don't expect that to solve the stalling problem. The most common causes are the crankshaft position sensor and the camshaft position sensor. Those commonly fail by becoming heat-sensitive, then they work again after cooling down for about an hour. This is pretty common on all car brands and models. What is different between models and years is that some engines will stall and not restart when either sensor fails. Some will continue running when one sensor fails, but then they won't restart after being turned off. Still others, mostly newer models, will run with one failed sensor of the two, but may not run well.

You're likely to be asked to have the diagnostic fault codes read as the preliminary step. The people at many auto parts stores will do that for you for free. Remember they're in the business of selling parts. No fault code ever says to replace a part or that one is defective. They only indicate the circuit or system that needs further diagnosis, or the unacceptable operating condition. When a sensor or other part is referenced in a fault code, it is actually the cause of that code about half of the time. First we have to rule out wiring and connector terminal problems, and mechanical problems associated with that part.

Once you know the exact fault code number(s), you can go here:

https://www.2carpros.com/trouble_codes/obd2/p0500

to see the definitions, or I can interpret them for you.

By the way; you did a dandy job with your new question. Most people just list it as a "no-start", but that can mean a number of different things. "Cranks", but won't start is the perfect description. Also, thank you for listing the engine size and mileage. We need that for finding the right diagrams, and the mileage is used to select the best suspects for a problem.