2007 explorer seems as if when shifting from 3rd to 4th it goes into neutralits a 5speed auto..

First off, check your transmission fluid which is thoroughly explained in the video I’ve provided a link to, definitely watch it as your explorer’s transmission isn’t quite as straight forward to check the fluid as many others are. If it’s low, add the proper amount.

Are there any warning lights illuminated on the instrument cluster? If so, have it checked for free at a local parts store or whatever it takes as there may be an obvious answer to be had by just hooking up a diagnostic scanner. This sounds like an internal transmission issue, it may be, but it’s possible that it isn’t. If there’s no light on and no easy solution from s scanner, Get a transmission filter and the appropriate fluid from a parts store and change the transmission fluid/filter or have a qualified friend/family member, or a qualified shop change the fluid. It’s a simple process and they’re all the same(basically) so if you’ve done this to another vehicle in the past you won’t have any issue. If neither helps, you’ll probably want to start looking for a good used transmission with low miles and a warranty which is easily found online and from local junkyards, salvage yards, parts suppliers, etc. This will be the most affordable option, a transmission that’s “remanufactured”, rebuilt, or new is quite expensive. If you have ever changed a transmission or know someone who can help you or even do it “on the side” then go for it, just call a transmission shop and get a quote to rebuild/replace yours and you’ll see why I’m suggesting everything else and the transmission shop or dealership is a last option. If Money isn’t an issue just pay someone to fix it, otherwise check on a good used transmission and line up sine help swapping them out. It’s not the hardest thing to do, but it’s hard to do alone unless you’re in a fully furnished shop with transmission specific equipment- especially a transmission jack but you can rent them as well from a local rental store- just call around and do your research about any/all companies you deal with before spending a penny, it pays to do your research- especially with this stuff and there are some shady shops and suppliers out there so just don’t skip the research and looking at reviews, etc. Ask people you know if they can reccomemd an affordable, honest, and capable person or shop to help you get this issue resolved. Good Luck, and start with the small stuff first as this may be a suborn fix.

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