2002 325i 201,xxx miles. I've looked up a bunch of posts about the alternator going out and limp mode. My red battery light was on car went into limp mode. Changed battery and alternator, red battery light is gone and now still in limp mode. Tranny ran great before, cleared codes no gear light, drive about 100 yards then limp mode again. P0734 P01732. Both Tranny codes. Not sure why I'm getting these. I've tried all the recommender steps. Will really dirty transmission fluid or a bad filter cause the car to go into limp mode. I did disconnect the top coolant tube for easier access to the alternator an coolant leaked into the belts. Any help is appreciated. Thanks.