I have a 2002 Honda Civic. When I bought the car, the AC compressor was unplugged. I plugged it back in and it did not engage. I checked the pressure and it was a little bit low. I jumped the relay with the pressure gauge on and watched the pressure drop when the compressor kicked on. I added some refrigerant but it eventually leveled out and when I pulled the jumper out, the pressure spiked to 120+ PSI on the low side. The clutch does not engage with the relay though the relay doesn't looked charred or broken externally. Is this a problem with the compressor? It's still not blowing air though it appears to affect the pressure when it is engaged.