JDM11893

I just recently bought a 99 dx hatch that did not come stock with ac. I got the evaporator compressor and condenser all out of a 95 civic sedan. The dryer and a small wiring harness that hooks up to the compressor dryer and the condenser which has a ground off a 99 civic ex. Everything plugged right up but only the evaporator turns on. I also put all relays and the diode fuses in the engine bay but the compressor and condenser still don't engage does anyone know where I went wrong or what I'm missing?

SleepySOHC

make sure the ground is on bare clean metal, multimeter to see if its getting power? is there a fuse by any chance for this?

Fabrik8

Grab a factory manual and see if you're missing any connections.

wright

Is the A/C pumps clutch kicking in? I assume that it is not one thing might be that there is no refrigerant in the system preventing it from kicking in. Now I only say this because that is the issue with my truck.

Dough_Boy.

How does a condenser and dryer turn on? Did you fill it up with freon? Then it's all computer controlled did it come from the factory without a/c. If so that's your problem the computer isn't gonna kick the compressor on.

JDM11893

So I need to get a different ecu?

TRQLESS

I was under the impression that the button on the climate control turned the compressor on. The only thing the ecu controls is the throttle % shutoff or the rpm shutoff so it doesn't trash the clutch in the compressor. But I could be wrong on this.