How do you disable AC in a 1995 Chevy S-10 so defroster will work without running compressor AC going bad and I may not fix but need air to blow through defroster vents.?

Answer 1

I am not an professional automotive technician, so this answer will have to suffice until improved by a professional. Most, if not all, A/C compressors are turned "on" and "off" by an electrically operated clutch which is a part of the drive pully assembly on the front of the compressor. There is usually a single wire running to the back of the clutch through the narrow space between it and the front of the compressor. This wire is energized ["hot"] only when the A/C-Heater controls are calling for the compresor to run. To disable the clutch, requires only that this wire be disconnected. Usually, there is a plastic connector in the line very near the clutch. All automotive electrical connectors have little "locks" built in to prevent accidental disconnection, so depending on the type of lock, you will have to figure out how to release it. Although the dealers have tools for this purpose, they are seldom available to the do-it-yourselfer, or are outrageously expensive. I usually use a slot blade screwdriver inserted into the locking tab joint, and with a slight key-like twist hold the latch open while pulling the connector apart. Usually, the connector is well "stuck" together and a second pair of hands is extremely helpful; one to release and hold the lock, and the other to twist and jiggle the connector apart. A last resort option would be to simply cut the wire, but if this option is exercised, be sure to cover the exposed end of the hot wire with a wire nut or electrician's tape to prevent a short circuit to ground, which would result in electrical system damage, in the worst case scenario, a FIRE.