Well this past weekend I removed my A/C compressor, condensor, high pressure, and low pressure lines. I replaced the belt running from crank to compressor to alternator with a new belt that runs from crank to alternator now that the compressor is no longer there. Originally I was using a 6 rib belt, the new belt is a 4 rib belt. My problem is that at the start up of my NX a large squeal is made until I rev the engine above 1500 rpms. Also when rpms drop below 1000 it makes an audible noise if my lights are on. How should I adjust the alternator or belt to stop this god awful noise? I'm not putting the AC stuff back.