My A/C belt is squealing (*really* loud) on cold starts + acceleration. I took my subie in today to Mastro for my 7500 mile maintenance and they told me they refitted a loose belt. On the way home the belt squealed again... once you get to cruising speed it just chirps once in a while.
Could someone kindly explain to a non-mechanically inclined person what causes this and how I can fix it myself? Mastro is a 1.5h drive away for me.
thank you kindly!