I was thinking he had an '89. One thing I just discovered is that if you try to unplug the rubber plug going into the bottom of the '89 dizzy, you can crack these skinney old brittle alignment pins off the module in the dizzy. That can give you "bad sensor codes"...
The '89 module is available (rockauto is soldout) part number is like,,,Standard LX122.
I have a '89 firewall plug that can be soldered on(the rubber dizzy end is toast).

dave h.
'89 Raider V6 5spd;Aisin Hubs;; Gen2 LS: frt. brakes, rear coils;U.C.arms;R.trailing arms;idler arm; rear LSD axle w.disc brakes ;2 battery system for Dog's fan; relocated ECU; custom bumpers;J.Baker receiver;Conferr roofrack; t-bar crank.