I can't believe the Ford 2.3 liter engines that were found in the early 90's model Ford Rangers didn't make this list! I had to replace three EGR valves in the first 70,000 miles. The tranny also needed a rebuild at just 33,000. There were several of us in my unit who had these trucks and they ALL had similar issues. Thank God our food and clothing were provided by uncle Sam or I would have been too poor to eat.