I'm not sure if this is the right place to put this. It's about a Ford V8, but it's not in a Z so... I'll ask the question and if it's in the wrong place, could someone please move it? Thanks.
I've got a 1990 F150 with the 302 EFI. When I start the truck up in the morning, I let it warm up. I forget the reason, but when you first start it up when it's cold, the engine revs high for about 45-60sec, then slows down to idle. I usually wait for this to happen, then I put it in reverse, and it dies. Then, I start it up again and it goes through the same routine, revs for about 45-60sec, then slows to idle. I put it in reverse, and it's fine. It only dies after it's been sitting a while (usually overnight) and only when going into reverse. I'm not sure if this is an electrical problem, an engine problem, or a transmission problem. The truck has 104,XXX miles and AOD transmission. Can anyone figure out why it dies and how I can fix it? Thanks for any help.