Car wont start, when it does start it misses

Hello,

This idle issue can be caused by few items.
It could be a dirty idle air control valve. When the IAC valve gets dirty it can affect your idling, it can idle poorly and many times will stall the engine.
Many times you can just clean the idle air control valve and it will help with idling.

https://www.2carpros.com/articles/how-a-idle-air-control-valve-works
https://www.2carpros.com/articles/idle-air-control-valve-service

Also want to have a look at the mass air flow sensor. A dirty MAF sensor can trigger bad idling as well. The MAF sensor can be cleaned as well.

Here is a helpful article:

https://www.2carpros.com/articles/mass-air-flow-service

Another possibility is the throttle position sensor. A faulty TPS can make the engine to have low/poor idle.

I have attached diagrams for your reference.

Please let me know of any questions.

Thank you.