When i turned on my A/C the fan on the driver's side doesnt work but i still get cold air.
I check my friend's car and his fan is working when he turn the A/C on. What could be wrong? And my car sputtering when i turn on the A/C but when i turn the A/C off the sputtering goes away. Do you guys have any ideas what is wrong?

 

Check fuses first, then test the fan. You definitely want the fan on for colder A/C and to help with radiator cooling at idle.

 

i check the fuses and they were fine and i replaced all the fuses just to make sure , could this be my fan or the fan relay?

 

Sounds like your problem is the blower motor, blower resistor or wiring, maybe a fuse or relay, [blower switch must be working or A/C would not].

MM&Y of car would help.

Start by checking for power at the blower motor, [ign. switch on], probably a blue/white lead at blower motor plug, if there is no power check fuses and blower motor relay, if there is power, use a jumper lead to supply a ground to the other lead in the plug, if blower works, pull and check the blower resistor. 94

PS the "sputtering" could be because engine is not "idling up" when A/C is on or because compressor is loading up because evaporator is freezing up because of no airflow.