Try checking the PCM Power Relay for proper operation. You can get the location of this relay by consulting your owner's manual, or downloading the *. Pdf file from motorcraft. Com website. The relay is located in the engine compartment fuse box.
According to a wire diagram I have in a Hayne's repair manual, the PCM Power Relay provides power to the PCM and the fuel pump. In the engine compartment fuse box, check Fuse "R" (30 Amp) with the ignition switch on. You should have power. Fuse "R" feeds to fuses #35 (10 Amp for PCM), and Fuse "N" (20 Amp for Fuel Pump).
If the relay is bad, it obviously won't provide power to PCM, which down-the-line provides proper spark signals for the coil.
Tuesday, March 10th, 2009 AT 8:06 PM