Okay I Need Some Mechanics Expertise...The A/C In My Car Wasn't Working At All...It Would Blow Air, But 0nly Hott Air. I Had It Checked 0ut && Turns 0ut The Expansion Valve Was Damaged-Causing It To Stick. So I Had That Replaced-Had It Vacuumed 0ut & Recharged...My Air Is Cool, But It's Not Cool Enough To Ride With The Windows Up. My Compressor Is Running Fine 0n Both The High && Low Side. No Freon Leak. It Has The EXACT Amount 0f Freon It's Supposed To Have. Everything Is Working Like It's Supposed To. The Air Is Just Not Cold Enough. Now I've Noticed That My A/C Makes This Funny Sound When I Turn It 0n && Drive, But It Stops As Soon As I Turn AC 0ff. It's Similar To A "Grrrr' Sound 0r Like A Gruff Humming Sound. Can Anyone Tell Me What That Sound Is && If It Could Be The Reason Why I Can't Get Cold Enough Air 0ut 0f My A/C...0r Any Suggestions 0n What I Can Do To Get It Working?! Please?! I Need Help! Lol! Thank You!