hey im having a major issue with complete horsepower loss I just got it back out the shop ran like day one when purchased but went back to horsepower loss rpm wont even go past 2 real loud clankin noise till you hit the gas then it smooves out but it finally wont even pull str8 stretch it trying its best to kill over wen in drive plz help me badly in need before I decide to sell it plus another issue it wont kick dwn like it used to