88 YJ, manual to auto swap questions im gonna pull my 5 speed out, so sick of it for crawling and reverse is going out, found a deal on a 98 tf999 auto from a wrangler with 23 spline output, converter, flexplate, cooling lines, etc. Jeep YJ Manual to Auto Tranny Swap Anyone who has driven a manual transmission in traffic knows how much fun this can be. My Wrangler (YJ) is the first vehicle that I have driven on a daily basis that was a manual and I was beginning to miss the automatic more and more. My goal then i need to change the fluid in my transmisson its a 1989 jeep wrangler with a manual trans What kind of fluid goes in a 1989 jeep wrangler manual transmission? Jeep Yj Transmission. Source(s): https://shrinke.im/a8JkZ. morano · 2 years ago . 0. Find great deals on eBay for 1988 jeep wrangler transmission. Shop with confidence. Skip to main content. Automatic Transmission AWD 258 Fits 80 85-88 EAGLE 532796 (Fits: 1988 Jeep Wrangler) 1990 Jeep Wrangler YJ 2.5L Manual Transmission 4x4 4wd. 6 Month Money Back Guarantee!! Tested Manual transmission parts can make all the difference to your Jeep's performance. Adding a few new parts can take your Jeep excursions to new heights. Manual-drive Jeeps are enjoyable to drive because the transmission offers the driver control over shifting and adjusting the rate of speed. Aisin-Warner AX15 Transmission. The Aisin-Warner AX15 transmission is a very successful, medium-duty, standard shift, five-speed transmission. It was introduced in the 1988 (mid-year) YJ Wrangler and XJ / MJ Cherokee / Comanche Jeeps, and found in 1988-1999 Jeep XJ, YJ, and TJ models. 1987-1995 YJ Jeep Wrangler Transmissions As long as drivers have been taking their vehicles off the beaten path, they have been arguing about manual and automatic transmissions. Both have their strengths and weaknesses, but it seems that most off-roaders have come down on the side of the manual transmissions. Willys Jeep Restoration Parts, Jeep CJ, Jeep Wra