The trans in my car, 94 Cougar 4.6, developed the famous shudder, and some erratic shifting. Today I did a flush and fill with Mercon V. The shudder is gone, the erratic shifting is still there. But I noticed this evening, as the outside temp dropped, and my engine ran cooler, the tranny shifted a lot better. Tomorrow I am going to install a tranny cooler. I still need to replace the accumulators and get the 96 pan. Am I just putting a band-aid on a bigger problem, or will this cure my shifting?