Check engine light comes on when running air conditioning goes off when not run

What is your question?

Check engine light comes on when after running vehicle with air conditioning on shows a cylinder 5 misfire truck runs rough and losses some power if I run truck without air conditioning light goes off and truck runs great

What makes this problem better or worse?

When engine first starts motor shakes after warm up fine

How long has your 1997 Toyota T100 had this problem?

1 month