My nephew has installed a 1995- 5.0 HO in his '65 Galaxie, opting to go with the efi instead of carbureting it. Somewhere long ago, I heard, read, somehow was told, Ford had started placing a diode INSIDE the fender-mounted starter solenoid to protect the PCM against voltage spikes generated when the starter is switched on and off. The solenoids were identifiable by having only 3 terminals, instead of 4. So, I told him get rid of the '65 solenoid. This morning he calls from O'Reilly; he's specifying EEC-IV solenoid for 1993 Mustang; they showed him 3 or 4 different brands, ALL having 4 terminals. So, could the suppliers be putting the diode in ALL the product, to cover old and new starting systems?
Or, am I wrong on this? O'Reilly finally found a Motorcraft specced for Mustang: 3 Terminals! My later-year schematics show a power diode mounted directly in the underhood junction box (fusebox) feeding power to the PCM Power Relay. Ideas? imp
Or, am I wrong on this? O'Reilly finally found a Motorcraft specced for Mustang: 3 Terminals! My later-year schematics show a power diode mounted directly in the underhood junction box (fusebox) feeding power to the PCM Power Relay. Ideas? imp