Problems after replacing my s70 1999 alternator
 

Hello everyone,
I have a volvo s70 1999, when i start it a loud sound is produced i had to change the alternator. After that, the car started normally but the sts and ets light went on, the A/C didn't start and the cruise control stopped working. For a speed higher than 100 there is something abnormal, and it is stopped. Is the new alternator is causing all that or there is a new problem?

Check the serpentine belt......