Well i installed the tranny cooler and filter and then went and had a complete tranny flush done. On morning when i start my car (after letting it sit for roughly 6 - 8 hours ) i turn it on and the RPMs jump to 2500ish like normal then immediatly drop to like 500 or some times it will die. then next attempt is always perfect, starts right up and sounds good. ive never seen this. with the cooler installed they had to use 12.3 L of trans fluid, because there is more fluid to move might this be causing that??