WWDiesel wrote:
casm wrote:
We'll see what happens over the next couple of days, but I am 100000000% behind the idea of the FCM being useless at this point.
Did you ever get it home and problem sorted out?
Status.

Well... Here's what I can say about that, 3 months later. Apologies for not replying sooner, but there was some personal stuff going on at the end of last year and I basically took a break from the Internet for a while in order to better sort things out. Anyway:
Took it to the dealer to have the ECU reprogrammed. They found that the ECU and FCM were fine, but that there was some significant wiring damage under the hood. This appears to have been naturally-occurring (in the sense of exposure to heat and vibration for 15 years) and not the result of poor previous repairs or collateral damage (e.g., from a fire).
Can't remember offhand which wires were affected, but it was a half-dozen or so circuits. Jiggle things the right way, everything works. Jiggle them the wrong way, dead Jeep. In any event, it was a problem for which I didn't have tools on hand to properly chase down, so the dealer was the best and only option. In fairness to them, they did an excellent job and only charged 4 hours labour for it, which seems reasonable given the work involved.
Anyway, the KJ got me home and has been surprisingly uneventful since then. Thanks to everyone for the help; it really was appreciated. I think I owe a few folks here a beer (or preferred equivalent) at some point
