Why did you delete me? I just wanted to learn about auto mechanics

No idea what you're referring to. I've seen questions with profane language, and with nothing more than links to other web sites. Other than that, the only questions that get deleted are those where someone posts multiple times for the same thing, and then they get "merged" into one thread.

You also might not understand how this site works. Unlike other sites where anyone can chime in to confuse the issue, here it becomes a private conversation between just two people, and sometimes an additional one or two to help. As such, now you and I are the only people who will get an automated e-mail directing us back here when a reply is posted. Since I am not a Nissan expert, and since I may not be the right person for the type of problem you didn't list, that is likely to not get you the help you need. That means you should post a legitimate question so all the other experts can see it and have a chance to reply.

I see you've posted over two dozen times before, so you must be coming back for a reason. Hopefully that's because you were able to find the answers you needed. The people here will stick with you for weeks or months, if necessary, but sometimes we have to get others involved when we reach a dead end.

Please keep these things in mind when you post your next question.

1. Be sure to list the engine size, transmission type, and mileage like you did here. We need that so we can look up the right diagrams the first time, and when making judgement calls as to best suspects.

2. Refer to just one problem per question and please include as many symptoms, observations, and clues as possible that might be related, along with any recent history that led up to this. The site owners sit down and categorize every question by brand and model, and again by type of problem or system with the problem. That is to make it easier for others researching a similar problem to find answers without having to write their own question and wait for a reply. This is why, when we help you solve a problem, then you add a new one, you'll be politely asked to write a new question for that new problem. You might get the same person working with you, but it helps with that categorization.

3. Most people are patient when waiting for replies, but be aware some of the experts have full-time jobs, and can only be here at certain times. For me, I had a major house fire some years ago, so I don't have internet access at home. I drive up to 25 miles per day to sit on someone's wireless system so I can answer questions, all at no charge to you. The site owners used to accept donations, but today the site is supported by advertising dollars only. I like that you can get help for free from very qualified people. They don't require a "Thank you", but they sure deserve your respect.

Please be aware it can take a real lot of time for one of us to post a reply. Some of us, like me, are only here a few hours per day. We try to include all the diagrams, drawings, or photos we might need right away, but it can take hours to find the right ones, then add arrows, callouts, or notes, and then convert them to a format that can be uploaded. I often do that formatting at home over many hours, then post them the next day. Often the information we post includes things you could have found yourself in a service manual, but no one asks you to do that. We do it for you.

Also be aware your new question doesn't get posted right away. There used to be a lot of trouble with people posting spam web addresses which was a big waste of time and resources. Now each new question gets reviewed first. That insures when we spend a lot of time writing a reply, it will be worth it. Your question still might show up, but remember, this one is not the best place to continue our conversation. My specialties are Electrical, Suspension and Alignment, Brakes, some Engine Repair, and Chrysler products in general. If the problem you're working on doesn't fall into one of those categories, we have other experts who are much more qualified to help you. That means you have to post a new question so they will see it.

If your question doesn't show within an hour or two, to speed things up, here's the link to post a new one:

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

You mentioned learning about cars. There's no substitute for the Automotive programs at community colleges, and then working with a mentor, but when you have a specific need, consider looking at the articles here:

https://www.2carpros.com/articles

There's also well over 700 how-to videos on YouTube that might be helpful:

https://www.youtube.com/@2carpros

We're here to help in any way we can, but even though some of us are or were instructors, it's impossible to cover everything here, especially when we rely on hand gestures and voice inflection when speaking, and when I especially need visual feedback to know if you're understanding what I'm describing. That's why we're hands on teachers and don't do well with remote learning over a computer.

What you might consider is visiting an instructor to see if they have any outdated textbooks you can have. My program was NATEF-certified. That's the same organization that tests and certifies mechanics. One of their many requirements was no textbooks could be more than five years old. Most authors add a few paragraphs, rearrange a few chapters, then call it the latest edition. The older editions have most of the same information, but we can't use them. We also get free copies every year from the publishers in hopes we will adopt them for our classes. Students used to pay over $125.00 for many of those books, so I always found people who were grateful to have or borrow some of mine.

By far the best service manuals to learn from are from the manufacturer. You can find a lot of them on eBay for all kinds of vehicles. Haynes and Chiltons leave out a real lot of stuff. They focus on what most competent do-it-yourselfers can handle. That leaves out most electrical stuff.

If you're thinking of making this your life's work, don't rule out the community college. Stop in and ask about grants and scholarships. You don't have to pay those back. We have hundreds of scholarships, and some are only available to students in certain programs. We had quite a few for only Automotive students, funded by shops in our area. Every school has a large office area filled with people whose only job is to find the right funding assistance for current and prospective students.

There's also student loans which are very easy to repay after you graduate. I used those to continue to a four-year college. I had mine paid back in full only nine months after I graduated. It could have been stretched out for a number of years.

Be aware that even when you go to school, that just prepares you for an entry-level job. There's all kinds of training classes available to independent mechanics and to those in new-car dealerships. Mostly you'll be able to be a productive employee who doesn't need a babysitter all day, but it will take some time to become "experienced". We keep on learning right up until we retire.

Beyond that, be sure to come back here when you run into questions with your next project. Even with things that seem simple, like brake jobs, they have a lot of things that can get you into trouble that are easy to avoid if we add some details or information first.