I have a 1993 honda accord ex. my grandfather had a new engine put in a few months ago. the air conditioner doesn't work the heats does. I beleve my grandfather told me that the air conditioner wasn't hooked up not sure can someone help me please

 

The air conditioner compressor is run by a single wire to the clutch coil. Check whether that is plugged in.

If compressor plug is connected, the system may be low/empty of refrigerant. You will need a gauge set to measure system pressure. A quick easy test is to check the hi/lo pressure cut-off switch (near compressor) to see if it is closed or open. If system has pressure the switch contacts should be closed (zero resistance measured w/ VOM). If switch contacts are open (infinite resistance), the system pressure is very low or zero indicating no charge.

In either case, you will likely need professional help to resolve the problem.

good luck