This has been driving me crazy, so I decided to post here to see if anybody could help figure this out. On October 4, I drove my stock 1992 Jeep Comanche with 4.0/AW4 about 200 miles to pick up an old Chevy coupe body. During the week before this, I had some issues with the "check engine" light and battery light coming on periodically. On Friday the 3rd I had the charging system tested and everything looked good, and neither warning light came on after that. Of course, on the way to pick up the Chevy on the 4th, the check engine light came on. The battery light would go on and off periodically. Right after I left to head home, both lights came on and stayed on. About halfway home, everything died - the truck had been running on battery power only and the battery died. My wonderful wife got a new battery and brought it to me. I installed it, hoping it would get me home, which it did. OK, here's the strange leak part of the story. About 30 miles from home, my wife (following behind me) called my cell phone and told me that my truck started blowing smoke out the back. It was starting to get dark, everything was still working, so I kept going so I could get home before I had to turn the lights on. Upon returning home, I had transmission fluid dripping from the whole underside of the truck, more so on the passenger side, from about where the cooler lines are attached to the transmission back. The smoke was the result of the fluid burning on the exhaust. I replaced the alternator the following day and cleaned everything up, then went to try to find the tranny leak. It didn't leak anymore. I've been driving it every day since then, about 30 miles a day, and it has not leaked at all. I'm wondering if it had anything to do with the load in the back of the truck, probably 600 pounds or so. Any ideas? I initially suspected the tranny cooler lines, but they're OK.
Sorry for the long story!