Hi, i got my clutch replaced and when i got the car back my rpm decreases a alot when i turn the steerin wheel to the point that sometimes the car shut down or stall,

I bought an iac replacement at pepboys and now the car starts at 1500-2k rpm and gets higher when the car is getting warm

I cleaned the the throttle and old iac and still low rpm, i tried calibrating the throttle whit the screw in the throttle body to get the rpm high atleast at 1k rpm and everything was fine until im driving and put the car in neutral, i get like 1300 rpm then he goes down to 800, then 1100...well is not stable at all. When the fan kicks in sometimes the rpm goes up and sometimes he goes down