I have a 1997 Jeep grand cherokee, with a problem. 3 Days ago, I replaced the radiator, because it had a large crack in it. It drove fine after the radiator was replaced for a day. Now, the check engine light came on as a "Output speed sensor" problem, the transmission acts like it has trouble shifting, the car stalls, and the speedometer jumps all over the place, regardless of the gear. I've tried to replace the vehicle speed sensor, and the transmission speed sensor, neither of them worked. Help! It's a 1997 Jeep grand cherokee, 4.0L inline 6, 4wd, atx transmission. The vehicle has 294,xxx miles on it, if that matters.