The problem with that solution is that the vanilla game works fine but when I had any new cars that I have never had before the game will still crash. So I'm not sure what to do if any new car I had crashes the game. But thank you for trying to help me as much as you have.

I have not re-downloaded any of the old mods I had before the problem. I just have them all saved and when I went to re install them I just grabbed the .rpf's from a file I have that contains them all. The gameconfig.xml I have installed is https://www.gta5-mods.com/misc/gta-5-gameconfig-300-cars. When the game crashes the only message I get is the the game closed unexpectedly.
This is the list of all the cars I had before the problem, in alphabetical order.

	<item>dlcpacks:\addervv\</item>
	<Item>dlcpacks:\AK_Dubsta\</Item>
	<Item>dlcpacks:\AK_InfernusR\</Item>
	<Item>dlcpacks:\AK_Surano\</Item>
	<Item>dlcpacks:\AK_VaccaR\</Item>
	<Item>dlcpacks:\algozion4\</Item>
	<Item>dlcpacks:\annis_kawaii\</Item>
	<Item>dlcpacks:\asteropers\</Item>

	<Item>dlcpacks:\bestiagt\</Item>
	<Item>dlcpacks:\BFbenito\</Item>
	<Item>dlcpacks:\Bison4\</Item>

	<Item>dlcpacks:\cara\</Item>
	<Item>dlcpacks:\CivilianLurcher\</Item>
	<Item>dlcpacks:\club\</Item>
	<Item>dlcpacks:\cometr\</Item>
	<Item>dlcpacks:\cometrwt\</Item>
	<Item>dlcpacks:\competizione\</Item>
	<Item>dlcpacks:\coqgte\</Item>

	<Item>dlcpacks:\drifttampa_v2\</Item>
	<Item>dlcpacks:\dubsta4x4\</Item>

	<item>dlcpacks:\elegyrh8wide\</item>
	<Item>dlcpacks:\es550\</Item>
	<Item>dlcpacks:\euros\</Item>

	<Item>dlcpacks:\gauntlets\</Item>
	<Item>dlcpacks:\gresleyh\</Item>

	<Item>dlcpacks:\infernussr\</Item>
	<Item>dlcpacks:\issi_v8\</Item>
	<Item>dlcpacks:\italigtc\</Item>

	<Item>dlcpacks:\karin_jester\</Item>

	<Item>dlcpacks:\nexus\</Item>
	<Item>dlcpacks:\nightshade2\</Item>
	<Item>dlcpacks:\NineF_Street_Runner\</Item>
	<Item>dlcpacks:\niner\</Item>

	<Item>dlcpacks:\oraclestd\</Item>

	<Item>dlcpacks:\polcoquette\</Item>
	<Item>dlcpacks:\premier_custom\</Item>
	<Item>dlcpacks:\primoard\</Item>

	<Item>dlcpacks:\rapidgte\</Item>
	<Item>dlcpacks:\razor\</Item>

These are the only car two I have downloaded after the problem to see if they would work and they did not.

	<Item>dlcpacks:\ig_millennial\</Item>
	<Item>dlcpacks:\monroec\</Item>

This is the list of cars that I have tested so far and have gotten to work fine.

	<Item>dlcpacks:/vanillawheels/</Item>
	<Item>dlcpacks:\es550\</Item>
	<Item>dlcpacks:\euros\</Item>
	<Item>dlcpacks:\requiem\</Item>
	<Item>dlcpacks:\sentineldtm\</Item>
	<Item>dlcpacks:\vtinfernus\</Item>
	<Item>dlcpacks:\vtinfernusc\</Item>
	<Item>dlcpacks:\zr380p\</Item>
	<item>dlcpacks:\addervv\</item>
	<Item>dlcpacks:\AK_Dubsta\</Item>
	<Item>dlcpacks:\AK_InfernusR\</Item>
	<Item>dlcpacks:\algozion4\</Item>

And the list of cars that I have tested so far that don't work.

	<Item>dlcpacks:\AK_Surano\</Item>
	<Item>dlcpacks:\AK_VaccaR\</Item>
	<Item>dlcpacks:\annis_kawaii\</Item>
	<Item>dlcpacks:\asteropers\</Item>
	<Item>dlcpacks:\bestiagt\</Item>
	<Item>dlcpacks:\nexus\</Item>
	<Item>dlcpacks:\ig_millennial\</Item> 
	<Item>dlcpacks:\gauntlets\</Item>
	<Item>dlcpacks:\monroec\</Item>

It's probably also worth mentioning that I went through the list starting at the top and moved down in alphabetical order when testing the cars.

All of the car mods are add-on's. They are all separate with the exception of the one that I uninstalled that created the problem. I had installed one of Vanilla Works' mod packs, (https://www.gta5-mods.com/vehicles/vanillaworks-extended-pack-add-on-oiv-tuning-liveries-vanillaworks-and-other-modders) and it made my game run very slow so I uninstalled it. When I did though, whatever causes the diverse traffic did not go away. I had suspected that it was this that was causing the poor performance. I uninstalled OpenIV in order to fix it and it did get rid of the diverse traffic but cause this problem. I do use the 'mods' folder for all of my modding and I have always done so. I use the Simple Trainer to spawn the cars but that doesn't matter because they game will simply crash while loading into story mode. I do still have some mods installed and they do not crash the game. I also started to go through each, one by one to see which crash the game bur I didn't make it very far before running into a streak of non-working mods. I tried installing a new mod that I had never had installed before and that one also caused the game to crash. But by simply removing it from the list, the game starts up with no issue. I do have a lists of all of the mods that I had installed before the problem and the start of the list of one I know for sure work and ones I know for sure don't. They exist in notepad and I don't how to share them through this chat.

I am having trouble with my mods. Awhile ago I uninstalled all of my car mods because one of them was causing my game to lag like crazy. When I tried to reinstalled them my game started crashing before loading into story mode. I then tried installing just a few at a time and could get some to work but not all of them. I tried uninstalling and reinstalling OpenIV but that didn't change anything. One of the mods I had did't work before uninstalling OpenIV but after reinstalling it it worked fine but others don't. I also tried uninstalling and reinstalling GTA V itself and that also didn't work. I just don't understand how all of the cars worked fine at one point then after uninstalling one mod they don't. I could really use some suggestions because it's been about a week and I still can't figure out what exactly is going on. Thanks.