I recently acquired an 88 wrangler 4.2 with the tf999 auto trans. I got it from an old man who had it to run around on his farm. He said the transmission had some issues, so he parked it. It had been sitting for a year before I got it. I drove it around the block a couple times today to see if the tranny was slipping or making any noises but the only problem was it wouldn't come out of first. Could the Tranny just need a new filter and fluid or am I looking at a rebuild?