my car it bucks then stalls sometimes?

This can happen when you have a vacuum leak. But we should run the codes to see if any codes are stored.

This guide can help:.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Can I ask if you changed the spark plugs? If not, I would start there as well, also I would service the throttle body.

These guides can help:

https://www.2carpros.com/articles/throttle-actuator-service

and use this guide when the engine is cold only.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Here is information on how to do the work on your car.

Gap .................... 0.9 - 1.0 mm (0.035 - 0.039 in)

I would replace the ignition coils as well; they go out along with the spark plugs. Check out the images (below). Please upload pictures or videos in your response to the problem so we can see what's going on.

car misfiring said to change spark plugs and ignition coils did so, and same problem.

Hello,

Have you had a CAN-scan done on your vehicle to determine which cylinders are misfiring?

How to do a scan:
https://www.2carpros.com/articles/can-scan-controller-area-network-easy

This scan will reveal which cylinders are affected by the misfire.

A good video on how to diagnose a misfire on your vehicle:
https://youtu.be/icWZYTKLets

A good guide:
https://www.2carpros.com/articles/engine-misfires-or-runs-rough

Hope this helps.

Cheers, Boris