we've been looking for a backup tractor to pull a hopper or side dump this fall and ran across a nice looking (inside and out) 91 FLD120 with wierd symptoms. It won't start without a shot of ether, but once it pops off seems to idle nice. Engine lite comes on right away, but as long as you don't lug it, it runs and drives fine, but putting it under a load is a no go.
Mechanically it seems fine. Oil is good, fuel pressure in good, coolant is good. AC is not working tho.
Ran a scan and it shows all 6 injectors as inactive. (how is it that it runs at all?)
Jakes, tach, speedo and so on seem to work fine. Tried replacing timing sensor, no change. Installed Reman ECU, same results. ALL 6 injectors inactive.
Any ideas what a guy should be looking for?