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Help - AC cycles often - Blows hot air

Rooftop-Special on Sun May 30, 2010 11:09 PM User is offline

Year: 2000
Make: Honda
Model: Civic
Engine Size: 1.6L
Refrigerant Type: 134A
Ambient Temp: 95
Pressure Low: 120
Pressure High: 120
Country of Origin: United States


I bought a 2000 honda civic and the AC doesn't work. The pressures are 120 low and 120 high. The compressor sounds like it turns on for 5 seconds and off for 5 seconds. I verified this with a meter, at lease I know the clutch is getting 12v for 5 seconds and off for 5 seconds, I'm assuming the compressor is running by the lag in RPM. However during that time I see no difference in the low or high pressures.

I'm not sure if in the 5 seconds I suspect the compressor is on that it's enough time for the pressures to change? I really hope I'm not looking at a bad compressor.

Any help would very much appreciated.

Thanks in advance!


Cussboy on Mon May 31, 2010 9:37 AM User is offline

Sounds like some of your refrigerant has leaked out. Since you have gauges, personally I'd add 12 ounces R134a and see (1) if compressor stays on (2) operation (3) and how it works in a month

Rooftop-Special on Mon May 31, 2010 11:10 AM User is offline

nOOB question.

How do I charge with such a high "low side" pressure. I have a feeling the pressure of the low side and the can of 134A are close to the same and it won't charge.



ETA. I'm assuming I need to jumper the compressor as it doesn't run on it's own long enough to charge?

Edited: Mon May 31, 2010 at 11:20 AM by Rooftop-Special

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