Here we go again. Error codes 1694 and 1391

Just when I thought it could not get any worse. My wife was driving the car in town and it started missing real bad. When I got to the car I started it. It would not idle at all, like it was misfiring but if you stepped on the gas pedal and got the engine up to at least a 1000rpm it sounded great and ran great.

This is a 99 intrepid with the 2.7 engine. It seems like over the last couple of weeks it is going down hill fast.

Does anyone have any ideas what could be wrong with it this time.

Thanks

' Don't know about the 1694 but the 1391 says "loss of cam or Crank". Both of those sensors would be a good place to start.

go to this thread here that I made; it'll give you an idea as to what to look for: http://www.automotiveforums.com/vbulletin/showthread.php?t=355082