Volkswagen Jetta Engine & Drivetrain Problems

Hi i hit a big pot hole bottom od my sump cracked was still driving till it said low ool so manahed to park in safe place all oil was out big crack got towed home put new sump on it car started but noise from turbo car had not boost still m...

on my 06 jetta the fan comes on almost straight away. the engine isnt overheating,it stays at normal yet the fan always comes on. car got new water pump 5000miles ago. is this a serous problem,, will it harm the car or fuel economy??