Questions about the Grand Cherokee 5.2 V8

Hello together! Have already asked me about a Grand Cherokee. Have now another one in view. The mechanic from my dad sells it very cheaply. The car makes a very good impression so far. Technically everything also works, only the cruise control can not be activated. Here briefly the basic data: Grand Cherokee 5.2 V8 170.000km Year of construction 1995 2. Property Black / Beige The car is presented fresh and gets another service. .500 Euro So, now the problem: The gears from the automatic transmission switch so far clean and without problems. However, if I give full throttle in the stand and the vehicle wants in the second switch it sounds like the gear is “put in” with force. Even if I press the kick down in the second gear everything sounds quite funny. As I said, if I drive normally nothing happens so far, problem only with full throttle between the first and second gear. What do you think? Greetings Pascal edit: Get the car for the test drive all next week. Then you will also do a purchase check at the ADAC / ÖAMTC!