Bob,
First thing to do is run a self diagnostic code check to see if a code was set in the computer. It probably was since your engine light is on. Then go to the code charts to see what the codes breaks out to so you can start to fix the problem. Here's the link to the procedure to run the check. On the same page are the links to the two tables that contain the fault codes themselves. Good Luck.
http://www.ptdoityourself.net/ptfaq3e.html