Rep Power: 0

[size=16px]I have a 2006 Civic EX 5speed and the ac compressor keeps cycling every 5-10 seconds. I have replaced everything from the condensor to the evap core, pulled vacuum, added PAG oil according to specs and added freon accord to specs and the ac compressor and both fans still keep cycling every 5-10 seconds. Even if the climate control is off, the compressor and rad fans still cycle every 5-10 seconds. Any input greatly appreciated.[/size]

[size=16px]Following AC components have been replaced:[/size]
[size=16px]New Compressor (replaced 3x)[/size]
[size=16px]New condensor and dryer[/size]
[size=16px]New evap coil[/size]
[size=16px]New expansion valve (replaced 2x)[/size]
[size=16px]New pressure switch[/size]
[size=16px]New high and low side pressure hoses[/size]

 
Rep Power: 222

I know the compressors on this generation failed constantly.

 
Rep Power: 0

Pretty much all ac components have been replaced with new components from the condensor all the way to the evap coil.

 
Rep Power: 224

Cycling on/off is normal so the evaporator doesn't freeze up. It's not supposed to do that with the A/C off though. Are you having HVAC performance issues?

 
Rep Power: 222

so did you replace it or not?

 
Rep Power: 0

I don't think its suppose to cycle on and off like that, and it is not blowing cold at all. Doesn't give the compressor enough time to pump freon thru the system at all.

 
Rep Power: 0

I went thru 3 different brand new compressors, don't think its defective.

 
Rep Power: 224

Could be the low pressure switch kicking it off. Use a set of manifold gauges to read low/high side pressure while the compressor is cycling.

 
Rep Power: 0

Head pressure is good.....why would the fans and compressor constantly cycle every few seconds with the engine ar idle and climate control completely off.

 
Rep Power: 224

What pressures did you read?

 
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As soon as I get readings from low and high side I'll post them.....Im trying to figure out why system keeps cycling when climate control is off. Bad readings shouldnt cause this....

 
Rep Power: 224

If you just have the A/C turned off it can still come on when in defrost mode. If you have the entire HVAC system turned off (no interior fan) then it should not be cycling.

If you're seeing the later, you'd have to start troubleshooting the compressor power circuit. It would be getting power from somewhere it shouldn't.

 
Rep Power: 0

yea the entire system is havc system is off and no air is blowing in the cabin but as long as the engine is idling, the compressor amd fans keep cycling every 5 secs. Im leaning towards a faulty ecu.