Bronco won't shift out of first
 

K, here we go. I have recently aquired a 87' Bronco XLT automatic w/ 302, to the best of my knowledge (which isn't much) is all factory. The guy that i got it from said the the truck was running fine up untill his dad changed the radiator. Now the thing refuses to shift out of 1st gear. Everything else with the tranny seems to be fine, it goes in reverse, neutral (in 2wd & 4wd), but will not shift out of first please help. I do not know or how to identify which tranny is in this truck, or if that even matters. :confused: