Cadillac Repair: Heater problems, cadillac fleetwood, volt ohm meter

Question
Recently when I turn the defroster or heater on in my 1986 Cadillac fleetwood brougham, I hear a loud screeching noise and then the engine stalls. I want to figure out what's wrong with it since winter is coming and I need heat.

Thanks

Answer
This would be caused by a faulty A/C compressor that will require replacement.


If you are mechanicaly inclined or know of someone who is, You will need a DIGITAL VOLT/OHM METER, Simple electrical schematics, Test procedures and picture locations of the components within the system that is causing you problems of which can't be done on this website which only allows one picture. I do not have a website so you will have to e-mail: onlineautohelp@msn.com in order to obtain the information necessary to fix your vehicle.