New Screeching/chirping sound shortly after oil change and fluid top off. WTF. Reply #15 – December 30, 2015, 11:25:47 PM I jumped the cutoff switch for my ac compressor on my last tbird and it worked like new after a recharge. It quit working after a year or so, but the system was still pressurized.The only good way to bypass the ac is to get a mustang power steering bracket and find a delete kit. They can be pricey. Quote Selected