Hi all.

Today while doing some stuff on my X with the hood up, I noticed than when the AC is working, like 30 to 30 seconds I hear a bang.

After some peeking I noticed that the AC fan is working and after I hear the bang, the fan slows down, stops and then resumes spinning, then more or less 30 seconds go by and bang again, the fan slows down, stops and then resumes spinning

Is this normal????

Thanks