It suddenly jumps when it's idle. With check engine light blinking

What is your question?

It just started this 2 days ago. It will shake real bad and check engine light will blink but if I put it in neutral the shakes slows down or goes away but engine light stays blinking. It hasn't died on me yet

What makes this problem better or worse?

Neutral stops it

How long has your 2006 Kia Sportage had this problem?

2 days