1997 Dodge Intrepid Won't run

Kid's car stopped two weeks ago. The car would sputter and then stop. Had it towed to garage. Fuel Pump OK, code reads cam sensor - they replaced & now it doesn't run at all. Then they replaced the computer (they one the installed is one number off from the original). Mechanic is out of ideas - need to have it retowed. Any suggestion as to the problem would be appreciated since my kid is in college and he's using MY car in the downtime.

HELP