Will not start after cutting off the catalytic converter

Okay. We need to start at the beginning of what causes a crank no start. Here is a guide that will help with that:

https://www.2carpros.com/articles/car-cranks-but-wont-start

We need to use starter fluid and see if that causes the engine to start. Then we need to check for spark by pulling a plug and holding it against the block to see if there is spark when you crank the engine.

Let's start with this and go from there. Thanks

Hello, I'm Danny.

Since your van won't start first thing to check is to see if it's getting fuel and spark. Here are a few tutorials for you to view:

https://www.2carpros.com/articles/car-cranks-but-wont-start

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

If you don't have access to a fuel pressure tester most auto parts stores have a tool loaner program and can rent you one. I've attached the fuel pressure specification for your van below. Is the check engine light on ? Hope this helps and get back to us after performing these tests and we'll go from there. Thanks for using 2CarPros.

This guide will help you test the ignition spark:

https://www.2carpros.com/articles/how-to-test-an-ignition-system

Please run down this guide and report back.