I have a 2003 lincoln navigator that stalls when it goes into passing gear.

What is your question?

When I accelerate to pass it stalls, all I have to do is put it into neutral turn the key off and it will start back up. It runs and drives great except when passing. This produces a p0320 code.

What makes this problem better or worse?

car runs fine if you dont accelerate quickly

How long has your 2003 Lincoln Navigator had this problem?

a few weeks