Steve and Fred, As always, your input is invaluable to mechanically challenged folks like me. I actually went to the electrical diagrams mentioned about a year ago based on your suggestions, made copies of all charts therein, laminated them and keep them in the compartment under driver seat. That's the good news. The bad news is I don't know what each of them are for. I will do as you suggest Fred, and replace all of the relays you identified. I actually bought several of these relays last year. It has been suggested that my problem may be related to the "injection accusation pressure sensor" failure. So now, I am looking at the following possibilities, 1) changing the primary and secondary fuel filters, 2) replacing the related relays, 3) possible draining and cleaning fuel tank, 4) possibility of replacing the "low pressure fuel pump", 4) replacing the "injection accusation pressure sensor. Again, all comments and suggestions are welcome. Thanks, Albert