Thanks for the replies everyone. I haven't been able to do much on the van because it's a bit of a back burner job. I did try the resister on ECT sensor 1 and it definately affected the fuel control. It wouldn't even start when cold, so I took the resister back off. If I figure something out, I'll post an update.

James Kuhns
Owner/Technician
Auto Tech Solutions
Chatham, New York, USA