My compressor won't kick on unless I run the engine hard (5000 RPMS min.) When it kicks on, the belt slips. What could cause this?

Thanks in advance.

 

Does the condenser fan also fail to run when the A/C button is pushed?

 

It does currently, but didn't when I made this post, now nothing is happening.

 

If the condenser fan comes on, check if you have power to the compressor clutch wire (Do this test at idle speed). If there is power, you probably just need to reduce the clutch gap to get more reliable engagement.

 

Condenser fan was coming on, but doesn't currently.

 

Maybe the A/C fuse in the underhood fuse box is loose and/or blown. What model year?

 

98 Civic Ex
It was blown, however, upon replacing it, it blew again.
I disconnected the fan and it still blew with it disconnected.

 

Next disconnect the compressor and see if the fuse holds, if so the compressor clutch coil is probably shorted. Resistance of the compressor clutch (from the wire to ground) should be 3 ohms or more.

If the coil is bad, it and other clutch parts can be replaced without changing the whole compressor or recharging the refrigerant. But there is a chance that heat from the bad coil melted the seal in the compressor.

 

I disconnected the main wiring harness right above the one that goes directly to the condenser fan and the fuse held. Then, upon reconnecting it, the condenser fan turned on and I could hear the compressor engage, then disengage repeatedly, it proceeded to blow the fuse. I'm guessing new compressor?