Thread: weird problem with 98 gtp

update: today i bought an external cooler, and some new fluid. installed the cooler, ran the return line to it, and put the pressure line into a garbage can. started it up, and when it started to pump fluid out the press. line i kept feeding it with new fluid, after about 2 minutes the milky brown crap that was in it, started to flow a decent red color, so i shut it down, hooked up the pressure line to the cooler, topped it off and drove it. no more lost gears after the ~3 miles, but under 1/2 - 3/4 acceleration from a stop the car shudders, i let off get back in it and its fine. and on a hard run through first gear it slipped right at the shift point, then slammed into 2nd. shifts fine under normal acceleration/take offs. also theres a clunk, audible, and you can feel it when the car goes into reverse, or when you manually downshift it through the gears. any suggestions? and as far as the mixed fluid, it didnt mix with any coolant thank god. any ideas on what could cause the clunk, slippign under launches? i ran it with my 18 inch rims, with 225/50/18 tires on it, and it would not break them loose. am i wrong or should it not break that size or a tire loose? any input would be appreciated thanks guys