ok, i drive a 94 ej1 with z6 auto trans. nothing more than i/h/e, change trans fluid every 10k miles, trans feels strong, nothing seems wrong, BUT, when cruising 60mph or more, the trans keeps slipping in and out of overdrive, or the tq converter locks then unlocks. i usually only have this problem in the winter because the coolant temp wont stay in the "operating temperature", so the tq wont lock up, but its been like 90 degrees all summer and jus recently it starts doing this. any clues, ideas suggestions? its really getting on my nerves...thanks guys....