I was going to wait till additional parts arrived, but....put the next unit in and same thing, FMP starts around 20 volts then decreases to 0.00 at key in the on position even before cycling. I am stopping by to get a 50 amp maxi fuse and have a FICM relay on the way. I've never heard of a fuse somewhat working, either blown or not. The relay I may have read can get weak? I don't have any other ideas nor spent too much time reading up on this issue, so we will see. If these don't work, I hope someone else has an idea, I don't want to throw money chasing a problem.
I have a guy's weekend coming up, typical stuff; good friends, mountains, no cell phones, skeet, beer...so hopefully i won't be fretting about the van. And thankfully I didn't sell the pickup yet.