1987 F150 300ci Electrical Problem
 

WHen the truck ignition is in the run position I'm getting 4.5 volts to the start wire of the solenoid. :( I can unplug the solenoid and jump the solenoid out and it will start and run fine. When I plug the S wire in, the engine shuts down.:confused: Leave the S wire unplugged and take the truck out of park and it shuts down. :confused: It has Distributor mounted module. HELP!!!!! Haynes wiring schematic not extremely helpfull.:mad:

Check your column wiring for a one wire shorting out to another.