I have a 2008 Hyundai Elantra 4 cylinder. My ac fan under the hood will not come on. Ive had everything replaced the radiator and ac fan relay switch and thermostat relay switch replaced.

Yes I jumped it with the battery to make sure it worked and it comes on only that way.

When you turn your AC on,can you hear the ac relay click?

Yes I sure do but it not turn on

The ac works fine too I hear it click but the fan wont come on

If you have replaced all you said,may need to check the wiring to the relay and from the relay to the fan,you can all so pull the ac relay,and cross the terminal with paper clip to put direct fire to the fan win you cut AC on,but have some one that knows what they are doing to do this,you may just have a bad new relay>

Ok thank you I will see what happens.

the fan maybe no good

Chek the aircondition sensor