So I kinda inherited a 92 D250 from my son. It needed a few things. I found most of the answers here on this forum and wanted to say thanks. The items fixed or repaired were:
1) A water leak in the cab that turned out to be the driver side air vent in the kick panel. FRP and RTV fixed the issue.
2) Transmission (A518) only shifting to od after reaching 65, letting of the gas for 3 seconds, then a slow shift to od. Fixed after adjusting the TPS several times, new speed sensor, and repairing the wires to the transmission solenoid. The wires were dry rotted to the point the insulation fell off when I unplugged the connector. I also ran a wire from the ground terminal of the solenoid to the cab so I could tell when the ecm activated the od. Not sure which activity fixed the issue, but fix it did.
3) Fuel leak on the ip. Fixed with 4 oil rings on the control valve.
4) IP tuned a little and a THD fuel pin installed with a 366 spring.
5) ISSPRO tach on steering column installed. Nice to have a tach. What was the factory thinking?
6) OD lock out switch stopped working. Transmission selector lever with od switch installed. Our trucks only need the momentary switch to activate/deactivate the od lock out.
7) Replaced the radio
8) Replaced the od and cargo switch lamps with small leds that can be seen in daylight.
9) Speedometer repaired.
10) Gauge lights upgraded to LEDs.
11) KDP kit installed.
12) Rebuilt the vacuum pump due to oil leak.
13) Installed a 15 psi lift pump.

Partial list of repairs performed along with some normal maintenance items. The truck went from near derelict condition to a level of performance that is shocking in comparison. I would never have thought that this old rattle trap to be able to leave long black marks on the street.

Can't wait for the next project. maybe I'll fix the fuel gauge or maybe add a hydro boost system or......

 

Wow. You done good. That's a lot of fixing.

 

I really like those trucks. No steering problems whatsoever!