While Justin @ R&D IDI Performance builds the engine in my 1991 F350 7.3 IDI Diesel so it withstands all my upgrades for more power, I have been stripping the engine bay for a complete refurbishment. Unfortunately, I have only one of what I believe are two matching brackets that attach to the...
A real mystery. My 1991 F350 7.3 IDI wouldn't turn off with the key, so I did the usual and pulled the FSS wire to kill it. I replaced the Ignition switch and checked the actuator rod. I checked voltages on the switch and found the RUN R/LG wire was hot. This wire is supposed to get voltage from...
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