2002 dodge neon, car runs rough with very low idle,

What is your question?

p0108 code came up, i changed the map sensor and no change. the strange thing is when i put the car in reverse ( only reverse )the car runs and idles great, like there is no issue.

What makes this problem better or worse?

reverse makes it better

How long has your 2002 Dodge Neon had this problem?

a week