crashzx6r

ok 170,000 on the clock no leaks, has power/comfort switch, it has bypassed lines to external cooler, when the jeep reaches running temp it wont shift out of first even at rev limiter, any ideas? i was gonna put a fan on outside of cooler to make it run cooler my take is even with the cooler external it still gets hot behind the cast iron block at 210 degrees...im wondering where or which box is my tcu? yellow one or grey one under stering colum, im confused because it only shifts when the jeep is below 205. when below 205 it shifts very nice, all gears work. it works fine when hot just wont shift.